Getting Started with JBoss Developer Studio

Getting Started with JBoss Developer Studio
Getting Started with
JBoss Developer Studio
ISBN:
Publication date: April 2008
Getting Started with JBoss De...
Getting Started with
JBoss Developer Studio
PDF version
Getting Started with JBoss Developer Studio
Copyright © 2007, 2009 JBoss, a division of Red Hat
1. Getting Started with JBoss Developer Studio ............................................................. 1
1.1. What is JBDS? ................................................................................................... 1
1.2. Configuring Your Java Environment ..................................................................... 1
1.2.1. Installing and Configuring 32-bit Sun JDK 5.0 on Linux ............................... 1
1.2.2. Installing and Configuring 32-bit Sun JDK 5.0 on Microsoft Windows ............ 3
1.3. JBoss Developer Studio Installation ..................................................................... 4
1.4. JBoss Developer Studio and JBoss Tools .......................................................... 10
1.4.1. What is the difference? ........................................................................... 10
1.4.2. JBoss Tools Installation .......................................................................... 11
1.5. Welcome to JBoss Developer Studio ................................................................. 12
1.6. Upgrading ......................................................................................................... 16
1.7. Uninstalling ....................................................................................................... 16
1.8. Support ............................................................................................................ 16
1.9. Other relevant resources on the topic ................................................................ 17
2. Manage JBoss AS from JBoss Developer Studio ...................................................... 19
2.1. How to Manage the JBoss AS Bundled in JBDS ................................................. 19
2.1.1. Starting JBoss Server ............................................................................. 19
2.1.2. Stopping JBoss Server ...........................................................................
2.1.3. Server Container Preferences .................................................................
2.2. How to Use Your Own JBoss AS Instance with JBDS .........................................
2.2.1. JBoss AS Installation ..............................................................................
2.2.2. Adding and Configuring JBoss Server .....................................................
3. Write Your First Project with JBoss Developer Studio ..............................................
3.1. Create a Seam Application ................................................................................
3.1.1. Start Development Database ..................................................................
3.1.2. Create and deploy Seam Web Project .....................................................
3.1.3. Start JBoss Application Server ................................................................
3.1.4. Workshop Project Code Overview ...........................................................
3.2. Seam Action Development ................................................................................
3.2.1. Create a New Seam Action ....................................................................
3.2.2. Test Seam Action ..................................................................................
3.2.3. Modify Seam Action User Interface .........................................................
3.3. Declarative Security ..........................................................................................
3.3.1. Edit Login Authentication Logic ...............................................................
3.3.2. Secure Seam Page Component ..............................................................
3.4. Browsing Workshop Database ...........................................................................
3.4.1. Database Connectivity Setup ..................................................................
3.4.2. Browse Workshop Database ...................................................................
3.5. Database Programming .....................................................................................
3.5.1. Reverse Engineer CRUD from a Running Database .................................
3.5.2. Use Hibernate Tools to Query Data via JPA ............................................
3.5.3. Use Hibernate Tools to visualize the Data Model ......................................
3.6. Rich Components .............................................................................................
3.6.1. Add a Richfaces component to the CRUD Application ...............................
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Getting Started with JBoss De...
4. Developing a simple JSP web application .................................................................
4.1. Setting Up the Project .......................................................................................
4.2. Creating JSP Page ...........................................................................................
4.2.1. Editing a JSP Page ................................................................................
4.2.2. web.xml file ............................................................................................
4.2.3. Deploying the project ..............................................................................
4.2.4. JSP Page Preview .................................................................................
4.2.5. Launch JSP Project ................................................................................
5. RAD development of a simple JSF application ..........................................................
5.1. Setting up the project ........................................................................................
5.2. Creating JSP Pages ..........................................................................................
5.3. Creating Transition between two views ...............................................................
5.4. Creating Resource File ......................................................................................
5.5. Creating Java Bean ..........................................................................................
5.6. Editing faces-config.xml File ..............................................................................
5.7. Editing the JSP View Files ................................................................................
5.7.1. Editing inputnumber.jsp page ..................................................................
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5.7.2. Editing success.jsp page ....................................................................... 101
5.8. Creating index.jsp page ................................................................................... 103
5.9. Running the Application ................................................................................... 104
6. Project Examples ..................................................................................................... 109
6.1. Downloading a Project Example ....................................................................... 109
6.2. Quick Fixes .................................................................................................... 111
7. FAQ .......................................................................................................................... 115
7.1. What should I do if Visual Page Editor does not start under Linux ....................... 115
7.2. Do I need to have JBoss Server installed to run JBoss Developer Studio? ........... 115
7.3. I have an existing Seam 1.2.1 project. Can I migrate/import the project to a JBDS
Seam project? ....................................................................................................... 116
7.4. I have an existing Struts or JSF project. Can I open the project in JBDS? ............ 116
7.5. Can I import a .war file? .................................................................................. 116
7.6. Is it possible to increase the performance of Eclipse after installing your product?.. 116
7.7. How can I add my own tag library to the JBoss Tools Palette? ........................... 117
7.8. How to get Code Assist for Seam specific resources in an externally generated
project? ................................................................................................................. 117
7.9. How to import an example Seam project from jboss-eap directory? ..................... 117
7.10. Is a cross-platform project import possible for JBDS? ...................................... 117
8. Further Reading ....................................................................................................... 119
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Chapter 1.
Getting Started with JBoss
Developer Studio
1.1. What is JBDS?
JBoss Developer Studio is a set of eclipse-based development tools that are pre-configured
for JBoss Enterprise Middleware Platforms and Red Hat Enterprise Linux. Developers are not
required to use JBoss Developer Studio to develop on JBoss Enterprise Middleware and/or Red
Hat Linux. But, many find these pre-configured tools offer significant time-savings and value,
making them more productive and speeding time to deployment.
This guide covers the first steps to get started working with JBoss Developer Studio. You will learn
how to install and configure necessary software for your OS (currently Linux, Microsoft Windows
or Mac OSX).
Thus this guide will provide you with detailed info on how to start JDK, JBDS and JBoss Tools.
1.2. Configuring Your Java Environment
You must have a working installation of JDK 5 before you install JBoss Developer Studio. Currently
it will only fully work with a 32-bit JVM, not a 64-bit JVM. On a 64-bit JVM the visual editor fails to
launch because of feature of OS architecture. Thus in this guide we will show you how to install
a 32-bit Sun JDK 5.0 on a Linux Platform and Microsoft Windows Platform.
1.2.1. Installing and Configuring 32-bit Sun JDK 5.0 on Linux
To install 32-bit Sun JDK 5.0 on Linux and configure it, you should follow the next steps:
• Download the Sun JDK 5.0 (Java 2 Development Kit) from Sun's website. Choose "JDK 5.0
Update <x>" (where "x" is the latest update number) for download and then select "Red Hat
Package Manager in self-extracting" file for Linux. Read the instructions on Sun's website for
installing the JDK.
• If you don't want to use SysV service scripts you can install the "self-extracting file" for Linux
instead of choosing the "RPM in self-extracting" file. In that case you can skip the next step
mentioned here. But it is recommended to use the SysV service scripts for production servers.
• Download and install the appropriate -compat RPM from JPackage here. Please ensure you
choose a matching version of the -compat package to the JDK you've installed.
• Create an environment variable that points to the JDK installation directory and call it
JAVA_HOME. Add $JAVA_HOME/bin to the system path to be able to run java from the
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Chapter 1. Getting Started wi...
command line. You can do this by adding the following lines to the .bashrc file in your home
directory.
#In this example /usr/java/jdk1.5.0_11 is the JDK installation directory.
export JAVA_HOME=/usr/java/jdk1.5.0_11
export PATH=$PATH:$JAVA_HOME/bin
Note:
If you have JDK already installed and added in your system path, you should add
$JAVA_HOME/bin before the old $PATH (not after it) so that the new version of
JDK can be found first, i. e. export PATH=$JAVA_HOME/bin:$PATH This way,
the machine will pick up the new JVM first. You only need to run "alternative" as
a safe guard for the right JVM.
Set this variable for your account doing the installation and also for the user account that will run
the server.
• If you have more than one version of JVM installed on your machine, make sure you are using
the JDK 1.5 installation as the default java and javac. You can do this using the alternatives
system. The alternatives system allows different versions of Java from different sources to coexist on your system.
1.2.1.1. Select alternatives for java, javac and java_sdk_1.5.0
• As a root user, type the following command at the shell prompt and you should see something
like this:
[[email protected] ~]$ /usr/sbin/alternatives --config java
There are 2 programs that provide 'java'.
Selection Command
----------------------------------------------1
/usr/lib/jvm/jre-1.4.2-gcj/bin/java
*+ 2
/usr/lib/jvm/jre-1.5.0-sun/bin/java
Enter to keep the current selection[+], or type selection number:
Make sure the Sun version [jre-1.5.0-sun in this case] is selected (marked with a '+' in the output),
or select it by entering its number as prompted.
• Repeat the same for javac and java_sdk_1.5.0.
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Installing and Configuring 32-bit Sun JDK 5.0 on Microsoft Windows
[[email protected] ~]$ /usr/sbin/alternatives --config javac
There is 1 program that provides 'javac'.
Selection Command
----------------------------------------------*+ 1
/usr/lib/jvm/java-1.5.0-sun/bin/javac
Enter to keep the current selection[+], or type selection number:
[[email protected] ~]$ /usr/sbin/alternatives --config java_sdk_1.5.0
There is 1 program that provide 'java_sdk_1.5.0'.
Selection Command
----------------------------------------------*+ 1
/usr/lib/jvm/java-1.5.0-sun
Enter to keep the current selection[+], or type selection number:
You should verify that java, javac and java_sdk_1.5.0 all point to the same manufacturer and
version.
Note:
You can always override this step by setting the JAVA_HOME environment
variable as explained in the previous step.
• Make sure that the java executable is in your path and that you are using an appropriate version.
To verify your Java environment, type "java -version" at the shell prompt and you should see
something like this:
[[email protected] ~]$ java -version
java version "1.5.0_11"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
Java HotSpot(TM) Client VM (build 1.5.0_11-b03, mixed mode, sharing)
1.2.2. Installing and Configuring 32-bit Sun JDK 5.0 on
Microsoft Windows
To install and configure 32-bit Sun JDK 5.0 on Microsoft Windows, follow these steps:
• Download the Sun JDK 5.0 (Java 2 Development Kit) from Sun's website. Choose "JDK 5.0
Update <x>" (where "x" is the latest update number) for download and then select your Windows
Platform options to perform the installation.
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• Create an environment variable called JAVA_HOME that points to the JDK installation directory,
for example:
C:\Program Files\Java\jdk1.5.0_11\
In order to run java from the command line, add the jre\bin directory to your path, for example:
C:\Program Files\Java\jdk1.5.0_11\jre\bin
To do this, open the Control Panel from the Start menu, switch to Classic View if necessary,
open the System Control Panel applet ( System ), select the Advanced Tab, and click on the
Environment Variables button.
Now, when 32-bit Sun JDK 5.0 has been successfully installed, we can pass on to the next step.
1.3. JBoss Developer Studio Installation
This chapter will provide you with detailed information on how to install JBoss Developer Studio.
JBDS comes with a simple installer, bundled with tested/pre-configured versions of Eclipse, WTP,
JBossEAP, Seam, and SpringIDE. Thus, to start perform the next steps:
• First of all you need the appropriate installation file for your platform from Red Hat website.
• Then run in console:
java -jar jbdevstudio-linux-gtk-2.0.0.GA.jar
• Follow the instructions presented by the installation wizard:
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JBoss Developer Studio Installation
Figure 1.1. JBoss Developer Studio Installation Wizard
• Provide the installation path
• Select Java VM
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Figure 1.2. Select Java VM
Tip:
By selecting Default Java VM you set default Java VM of your system (to verify
your Java environment, type "java -version" in console).
Selecting Specific Java VM you can provide the path to non-default Java VM.
Note:
JBoss Developer Studio needs Java 5 and "gij" isn't available on every platform.
• Installation process includes JBoss Enterprise Application Platform. Select Yes to use it
in JBoss Developer Studio. This step lets you configure locally available JBoss Application
Servers:
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JBoss Developer Studio Installation
Figure 1.3. JBoss Enterprise Application Platform Installing
• You can fill the list automatically using the Find button: click Find, select a folder where search
of available JBoss Application Servers should be started and click on Ok:
Figure 1.4. Finding Servers in the Selected Directory
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Chapter 1. Getting Started wi...
• All available servers in the selected directory will be added to the list with the following
information specified: Name, Type, Version and Location.
Figure 1.5. List of Servers Added
• You can also add servers one by one using the Add button:
Figure 1.6. Add Server to be Configured
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JBoss Developer Studio Installation
Click on Browse and select the server location. Fields Name, Type and Version will be filled in
automatically:
Figure 1.7. Specify Server Location
Click on Ok. The server is added to the list with the details on its type, version and location.
The Remove button will the remove the selected server from the list. If necessary, you can edit
the server details clicking on the Edit button:
Figure 1.8. Edit Server
• Click Next. Check your installation paths and see the components to install. If you'd like to
change something, press the Previous button. Click Next to start installation.
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Chapter 1. Getting Started wi...
Figure 1.9. Summary Information
1.4. JBoss Developer Studio and JBoss Tools
This section uncovers the points on the differences between JBoss Developer Studio and JBoss
Tools and provides the steps on JBoss Tools installation as well.
1.4.1. What is the difference?
JBoss Tools is what went into our JBoss Developer Studio which comes as an easy-to-install
Eclipse based IDE fully configured and ready to run with the bundled JBoss Enterprise Application
Platform.
In short JBoss Tools are just a set of Eclipse plugins and JBoss Developer Studio adds:
• An installer
• Eclipse and Web Tools preconfigured
• JBoss EAP with JBoss AS and Seam preconfigured
• 3rd party plugins bundled and configured
• Access to RHEL and Red Hat Network
• Access to the JBoss/Red Hat supported software
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JBoss Tools Installation
For additional information see JBoss.com
1.4.2. JBoss Tools Installation
Here, let's consider the installation of the JBoss Tools modules.
JBoss Tools is an umbrella project for the JBoss developed plugins that will make it into JBoss
Developer Studio. The JBoss Tools modules are:
• JBoss AS Tools
• Seam Tools
• Hibernate Tools
• Visual Page Editor
• JST Tools
• JBPM Tools
To install the JBoss Tools plugins for Eclipse, you need the following:
• Get Eclipse and Web Tools
The current version of JBoss Tools (3.0.1.GA) targets at Eclipse 3.4.2 and WTP 3.0.4
Tip:
We recommend you do not use Eclipse.org update site to go from Eclipse 3.3 to
Eclipse 3.4. Instead we suggest that you download the full binary from here.
If you can only use Eclipse 3.3 use JBoss Tools 2.1.2, but JBoss Tools 2.x will not have any of
the new features.
Note:
Remember to choose the download that matches your OS and use Java 5 when
you run it.
• Get the latest JBoss Tools build
Some of our newer plugins, like TPTP and BIRT, need additional drivers. On the left side of the
download page you can find all of the required drivers for chosen build and their versions.
Instead of downloading the nightly build version manually, it's also possible to get the latest release
of JBoss Tools from one of our update sites:
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Chapter 1. Getting Started wi...
• Stable Updates: http://download.jboss.org/jbosstools/updates/stable
• Development Updates: http://download.jboss.org/jbosstools/updates/development
• Finally, install the build
Unzip the file(s) directly into your Eclipse plugins/features directory and it will be readily available.
It might be necessary to start Eclipse with eclipse -clean to make sure it starts clean and rereads
the new list of plugins.
If you need to install any standalone plug-in from JBoss Tools visit a JBoss Tools Wiki page to
read about dependencies between standalone plug-ins.
1.5. Welcome to JBoss Developer Studio
In this section we'll show you how to work with the welcome page of the JBoss Developer Studio.
The welcome page is the first page you see when you first launch JBoss Developer Studio.
Figure 1.10. Welcome to JBoss Developer Studio
With the help of its page you will be able:
• to get quick access to Getting Started Documentation (guides, tutorials and viewlets)
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Welcome to JBoss Developer Studio
Figure 1.11. Getting Started Documentation
• to create new Seam projects, jBPM Process, JSF or Struts projects using JBDS wizards
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Chapter 1. Getting Started wi...
Figure 1.12. Create New...
• to get short description of perspectives that JBDS offers for more productive development
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Welcome to JBoss Developer Studio
Figure 1.13. Perspectives
• to visit JBoss Developer Studio web resources.
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Chapter 1. Getting Started wi...
Figure 1.14. Web Resources
Start work with JBoss Developer Studio by clicking on Workbench button or simply close the
Welcome page.
1.6. Upgrading
To upgrade, just uninstall your current version and install the new one.
1.7. Uninstalling
• Make sure JBoss Developer Studio is not running
• Uninstall your current version of JBoss Developer Studio by running Uninstaller
1.8. Support
If you have comments or questions, you can discuss them at our JBoss Developer Studio Forum.
When writing to the forum for questions, please include the following information:
1. JBoss Developer Studio version
2. Exact error message
3. Steps to reproduce the issue
JBDS subscribers can get necessary support on our Support Portal.
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Other relevant resources on the topic
1.9. Other relevant resources on the topic
JBDS on JBoss: JBoss Developer Studio
Forum: JBoss Forum
Subscription: JBDS Subscription
The latest documentation builds are available here.
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Chapter 2.
Manage JBoss AS from JBoss
Developer Studio
In this chapter we'll focus more on how to operate the JBoss AS from JBoss Developer Studio.
JBoss Developer Studio ships with JBoss EAP v.4.3 bundled. When you followed the default
installation of JBoss Developer Studio, you should already have a JBoss EAP 4.3 Server installed
and defined. To run JBoss AS you need JDK 1.5, JDK 6 is not formally supported yet, although
you may be able to start the server with it.
2.1. How to Manage the JBoss AS Bundled in JBDS
This section covers the basics of working with the JBoss Server supported directly by JBDS via
bundled AS plug-in. To read more about AS plug-in, refer to the Server Manager guide.
2.1.1. Starting JBoss Server
Starting JBoss Server is quite simple. JBoss Developer Studio allows you to control its behaviour
with the help of a special toolbar, where you could start it in a regular or debug mode, stop it or
restart it.
• To launch the server click the green-with-white-arrow icon on the JBoss Server View or right
click server name in this view and select Start . If this view is not open, select Window > Show
View > Other > Server > JBoss Server View
Figure 2.1. Starting from Icon
While launching, server output is written to the Console view:
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Chapter 2. Manage JBoss AS fr...
Figure 2.2. Console Output
When the server is started you should see Started in the square brackets right next its name
in JBoss Server View.
Figure 2.3. Server is Started
2.1.2. Stopping JBoss Server
To stop the server, click the Stop icon in JBoss Server View or right click the server name and
press Stop.
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Server Container Preferences
Figure 2.4. Stopping Server
When the server is stopped you will see Stopped in the square brackets next to its name.
2.1.3. Server Container Preferences
You can control how JBoss Developer Studio interacts with server containers in the Server editor.
Double-click the server to open it in the editor.
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Chapter 2. Manage JBoss AS fr...
Figure 2.5. Server Overview
Here you can specify some common settings: host name, server name, runtime as well as settings
related to the publishing, timeouts and server ports.
2.2. How to Use Your Own JBoss AS Instance with
JBDS
Although JBoss Developer Studio works closely with JBoss EAP 4.3 we do not ultimately tie you to
any particular server for deployment. There are some servers that Studio supports directly (via the
bundled Eclipse WTP plug-ins). In this section we discuss how to manage self-installed JBoss AS.
Suppose you want to deploy the application to JBoss 4.2.3 server. First of all you need to install it.
2.2.1. JBoss AS Installation
• Download the binary package of JBoss AS, e.g. JBoss 4.2.3 and save it on your computer:
http://labs.jboss.com/jbossas/downloads
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Adding and Configuring JBoss Server
It does not matter where on your system you install JBoss server.
Note:
The installation of JBoss server into a directory that has a name containing spaces
provokes problems in some situations with Sun-based VMs. Try to avoid using
installation folders that have spaces in their names.
There is no requirement for root access to run JBoss Server on UNIX/Linux systems because
none of the default ports are within the 0-1023 privileged port range.
• After you have the binary archive you want to install, use the JDK jar tool (or any other
ZIP extraction tool) to extract the jboss-4.2.3.GA.zip archive contents into a location of your
choice. The jboss-4.2.3.GA.tgz archive is a gzipped tar file that requires a gnutar compatible
tar which can handle the long pathnames in the archive. The extraction process will create a
jboss-4.2.3.GA directory.
2.2.2. Adding and Configuring JBoss Server
Now we should add just installed server into server manager in JBoss Developer Studio.
• Open the JBoss Server View by selecting Window > Show View > Other > Server > JBoss
Server View
• Right click anywhere in this view and select New Server
• Select JBoss Community > JBoss 4.2 Server
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Chapter 2. Manage JBoss AS fr...
Figure 2.6. Selecting Server Type
Note:
Now in the New Server wizard there is a separation between the .org servers (the
JBoss Community category) and product server that comes bundled with JBoss
EAP (the JBoss Enterprise Middleware category).
• To create a new runtime, which Jboss AS 4.2 matches to, click Next
• In the next step make JBoss Developer Studio to know where you have installed the Server
and define JRE.
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Adding and Configuring JBoss Server
Figure 2.7. Defining JBoss Runtime
Note:
When adding a new server you will need to specify what JRE to use. It is important
to set this value to a full JDK, not JRE. Again, you need a full JDK to run Web
applications, JRE will not be enough.
• In the next dialog verify the specified information and if something is unfair go back and correct it
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Chapter 2. Manage JBoss AS fr...
Figure 2.8. Configuring Projects
• In the last wizard's dialog modify the projects that are configured on the server and click Finish .
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Adding and Configuring JBoss Server
Figure 2.9. Configuring Projects
A new JBoss Server should now appear in the JBoss Server view.
Figure 2.10. New JBoss Server
Now, we are ready to create the first web application.
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Chapter 3.
Write Your First Project with JBoss
Developer Studio
This chapter is a set of hands-on labs. You get step-by-step information about how the JBoss
Developer Studio can be used during the development process.
3.1. Create a Seam Application
In this section you get to know how to create a Seam project in JBDS, how to start the server and
what a structure your project has after creating.
3.1.1. Start Development Database
Before opening the JBoss Developer studio you need to download and start a Workshop
Database.
To start the database just run ./runDBServer.sh or runDBServer.bat from the database directory.
The end result should be a console window that looks like:
Figure 3.1. Starting DataBase
3.1.2. Create and deploy Seam Web Project
Minimize the terminal window and run the JBoss Developer Studio from Applications Menu or
from the desktop icon.
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Chapter 3. Write Your First P...
First of all you get the Workspace Launcher. Change the default workspace location if it's needed.
Click on Ok.
Figure 3.2. Workspace Launcher Dialog
After startup, you see the welcome page. You could read how to work with welcome pages in
previous chapter. Now select Create New... icon and then press on Create Seam Project link.
The New Seam Project wizard is started. You need to enter a name (e.g., "workshop") and a
location directory for your new project. The wizard has an option for selecting the actual Server
(and not just WTP runtime) that will be used for the project. This allows the wizard to correctly
identify where the needed datasource and driver libraries need to go.
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Create and deploy Seam Web Project
Figure 3.3. New Seam Project Wizard
All settings are already specified here, you can just modify the Configuration. Click on the Modify...
button to configure your custom facets pattern:
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Chapter 3. Write Your First P...
Figure 3.4. Project Facets Specifying
On the whole the dialog allows to select the "features" you want to use in your project. Doing
this JBoss Developer Studio setups the appropriate tooling for your project. Since JBoss Seam
integrates all popular Java EE frameworks, you can select any combination of technologies from
the list. Here, for the default configuration, Dynamic Web Module, Java, JavaServer Faces (JSF),
and Seam Facet are already selected for a typical database-driven web application. The default
project facets should suffice.
In the Project Facets form you can also bring up server runtimes panel by clicking Runtimes tab
on the right corner. This panel shows available server runtimes.
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Create and deploy Seam Web Project
Figure 3.5. Runtimes Selecting
Click on Ok and then Next to proceed further.
A dynamic web application contains both web pages and Java code. The wizard will ask you
where you want to put those files. You can just leave the default values or choose another folder.
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Chapter 3. Write Your First P...
Figure 3.6. Web Module Settings
On the next form, you will be able to select where those library JARs come from. The easiest is
just to select the JARs provided by the JBoss AS runtime associated with this project. That is why
it is important to chose the right JBoss AS 4.2 runtime in the project setup window.
• Check Server Supplied JSF Implementation . We will use JSF implementation that comes with
JBoss server
• Click Next
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Create and deploy Seam Web Project
Figure 3.7. JSF Capabilities Adding
Next wizard step needs more settings that previous. Let's start with General section.
Leave the default Seam runtime and check a WAR deployment.
Figure 3.8. Seam Facet Setting
Next Database section is a little tricky. The Connection Profile needs to be edited so that the new
project works properly with the external HSQLDB server. By default the project wizard tries to use
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Chapter 3. Write Your First P...
the JBoss embedded HSQLDB, but the tutorial uses an external database to replicate a more real
world development scenario. Click on Edit to modify the Connection Profile.
Figure 3.9. DataBase Setting
Select JDBC Connection Properties. Make sure the URL is set to
jdbc:hsqldb:hsql://
localhost:1701
Figure 3.10. JDBC Connection Properties
Try click on Test Connection button. It probably won’t work. This happens if the hsql jdbc driver
is not exactly the same. This can be worked around by modifying the HSQLDB database driver
settings. To modify the settings, click the “...” next to the drop-down box.
The proper Driver JAR File should be listed under Driver File(s). Select the hsqldb.jar file found
in the database/lib directory and click on Ok.
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Create and deploy Seam Web Project
Figure 3.11. Driver Details
Select Hypersonic DB and click on Ok. Again, this only happens if the selected hsqldb.jar is
different from the running database.
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Chapter 3. Write Your First P...
Figure 3.12. Hypersonic DB Selecting
Now, the Test Connection should succeed. After testing the connection, click on Ok.
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Create and deploy Seam Web Project
Figure 3.13. Connection Testing
You can leave the Code Generation section as is. It refers to Java packages in which the generated
code will be placed.
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Chapter 3. Write Your First P...
Figure 3.14. Code Generation Setting
Click on Finish button. Now, there should be a new Seam project called “workshop” listed in
Package Explorer view.
Figure 3.15. "worskhop" Project in the Package Explorer
3.1.3. Start JBoss Application Server
The complete information on how to manage JBoss AS from JBoss Developer Studio you can
read in a corresponding chapter.
40
Workshop Project Code Overview
Now you just need to start the server by clicking on the Start the server icon (
) in the JBoss Server View.
Then run the project by selecting the project and use Run As... > Run on Server.
Note:
If the project does not show up, then you can use a normal browser and use http://
localhost:8080/workshop/home.seam as the url.
Your project looks like this:
Figure 3.16. "workshop" Project Started
3.1.4. Workshop Project Code Overview
Now let's examine the project and its structure. Go back to the Package Explorer view in JBoss
Developer Studio.
It seems like it's not much for project but this shell application contains a login screen with default
login logic, a menu template that can be further modified, and other layout templates.
It's important to note that the business logic will reside in the src/hot folder, by default. And,
the package naming conventions that were used in New Seam project wizard could have been
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Chapter 3. Write Your First P...
changed to something different from org.domain.workshop.session. Also, notice that there is a
default Authenticator. java file. This is where custom security logic can be added. Seam has a nice
declarative security model that we will explore in a bit more detail later on. The src/main folder
is a model directory. It stores the project's JPA entity beans.
Figure 3.17. Project Structure
The view tier of the application is also important. Seam uses facelets and there is a built-in facelets
GUI editor that has some nice WYSIWYG and component drag/drop functionality. Try this out by
opening home.xhtml from WebContent folder.
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Seam Action Development
Figure 3.18. Facelets GUI Editor
Notice that the templates reside in the WebContent/layout folder. There is a stylesheet in the
WebContent/stylesheet folder. There is also a login and default error page. The Facelet editor
will be explored in more detail later in the lab.
The project already has a datasource that was created per the Seam project wizard database
settings. And, obviously all of the Seam specific configuration files and JAR dependencies are
included and placed in the proper locations. On last noteworthy line item is related to the build
script. There isn’t a build script because the Eclipse WTP(Web Tools Project) plugin is used to
publish web application changes. As you can see, JBoss Developer Studio is removing a great
deal of complexity from the enterprise Java project setup/deployment process. The end result is
a developer that is writing code, not spending days/weeks trying to figure out how to get a decent
development environment and project build process.
3.2. Seam Action Development
Now, it’s time to write some code. The good news is that JBoss Developer Studio can also help
out in this respect. In this section, we will create a new Seam Action POJO and facelet with some
custom business logic and some GUI changes.
3.2.1. Create a New Seam Action
Go to main menu bar and click on File > New > New Seam Action to start the New Seam Action
wizard.
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Chapter 3. Write Your First P...
Specify a Seam component name (e.g., "myAction"). The other properties will be auto-completed
for you so there is no need to change them. Click on Finish.
Figure 3.19. New Seam Action Wizard
Now, open the MyAction.java file and replace the "myAction" method with this logic:
public void myAction() {
Calendar cal = Calendar.getInstance();
log.info("myAction.myAction() action called");
facesMessages.add("MyAction Executed on:" + cal.getTime());
}
You also need to import the java.util.Calendar class by clicking CTRL + Shift + O.
3.2.2. Test Seam Action
The new action can be tested by browsing the workshop-test project. JBoss Developer Studio has
already created a TestNG test case for you.
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Test Seam Action
Figure 3.20. "workshop-test" Project
The test case simulates a Seam component/method execution for the MyAction.myAction() logic.
To run the test case, right click on MyActionTest.xml and click Run As > TestNG Suite or use
the Run As... toolbar shortcut as shown below.
Figure 3.21. TestNG Running
With any luck, the test case will pass. Look at the TestNG view.
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Chapter 3. Write Your First P...
Figure 3.22. TestNG Results
Now, it’s safe to test the new Seam Action in a web browser. The fastest way to do that is to right
click on myAction.xhtml and use Run As... > Run On Server which will show the appropriate url in
the browser. Alternatively you can manually enter http://localhost:8080/workshop/myAction.seam
into a browser.
Figure 3.23. Seam Action in a Web Browser
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Modify Seam Action User Interface
3.2.3. Modify Seam Action User Interface
Browse to http://localhost:8080/workshop/myAction.seam and click on myAction. This executes
the “myAction” method. This looks pretty good, but we could make this page look a little better.
Open WebContent/myAction.xhtml in JBoss Developer Studio to use the nice facelets editor.
Figure 3.24. Open Seam Action with Editor
Right click on the "myAction!" button in the visual part of editor and select <h:commandButton>
Attributes.
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Chapter 3. Write Your First P...
Figure 3.25. Seam Action Editing
Change the value of the button to something different. If desired, you can change any other text
on the page. Then, type CTRL + S to save the facelet.
Figure 3.26. Attributes Dialog
Refresh http://localhost:8080/workshop/myAction.seam and now you should see your changes.
Notice that you did not have to publish the application. JBoss Developer Studio auto-published
it for you.
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Declarative Security
Figure 3.27. Seam Action Is Modified
3.3. Declarative Security
In this section you will see how it’s easy to secure the facelets and facelet components in Seam.
Let’s go ahead and secure the action button, then we will secure the entire page.
3.3.1. Edit Login Authentication Logic
There is a class called Authenticator.java. The login page will execute the
Authenticator.authenticate() method by default, so we’ll start by adding some custom login logic.
Open Authenticator.java in JBoss Developer Studio and replace the authenticate() method with
this code:
public boolean authenticate() {
if (identity.getUsername().equals("admin")
&& identity.getPassword().equals("password")) {
identity.addRole("admin");
return true;
}
else
return true;
}
3.3.2. Secure Seam Page Component
Open myAction.xhtml and add a new secured command button:
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Chapter 3. Write Your First P...
<h:commandButton id="myActionSecured"
value="Secured Action Button"
action="#{myAction.myAction}"
rendered="#{s:hasRole('admin')}"/>
Refresh http://localhost:8080/workshop/myAction.seam If you are not logged in you will only see
one button. If you are logged in, there will be two buttons.
Figure 3.28. One Button on a Page
The secured button is not visible because the user isn’t logged in as "admin".
Figure 3.29. Secured Button is Visible
The user is logged in as "admin". Securing components is easy but securing pages is pretty simple
as well.
Open WebContent/WEB-INF/pages.xml . Then add this markup directly underneath the <pages>
element:
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Browsing Workshop Database
<page view-id="/myAction.xhtml" login-required="true"/>
Refresh http://localhost:8080/workshop/myAction.seam If you are not logged in you will get
bounced back to the login page.
Figure 3.30. Login Page
Thus, if you enter login credentials for the "admin" user, you will be re-directed to the secured
page and secured component. If you enter different login credentials, page access will be granted,
but the secured component will not be displayed.
Congratulations! You have secured your new action both at the facelet component and page level.
You also added custom authentication logic to the login action.
3.4. Browsing Workshop Database
In this section you get to know how to use the workshop database that was started at the beginning
of the lab.
3.4.1. Database Connectivity Setup
The workshop data can be browsed inside of JBoss Developer Studio.
To open the Data Source Explorer, click on Window > Open Perspective > Other > Database
Development.
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In the Data Source Explorer, expand a Databases node and select a Default database. Right click
on it, select Connect from the context menu.
Figure 3.31. Data Source Explorer
3.4.2. Browse Workshop Database
Then in the current view, drill down to the CUSTOMERS table.
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Browse Workshop Database
Figure 3.32. "CUSTOMERS" Table
Right click on CUSTOMERS, select Data > Sample Contents to view the data in the table.
There should be a SQL Results view on the workbench, but it could be hidden. Click on the
"Result1" tab in the right side and you should see the data in the CUSTOMERS table.
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Chapter 3. Write Your First P...
Figure 3.33. SQL Results View
Note:
If you can’t find the SQL Results view tab, click on Window > Show View > Other
> SQL Development > SQL Results.
Congratulations! You just connected to the workshop database and queried the content using
Database Explorer tools.
3.5. Database Programming
Now, it’s time to reverse engineer the workshop database into a fully functioning Seam
CRUD(Create Read Update Delete) application.
3.5.1. Reverse Engineer CRUD from a Running Database
In JBoss Developer Studio, switch to Seam perspective, and then right-click the project and select
New > Seam Generate Entities.
"workshop" project in the Seam Generate Entities wizard will be selected automatically. There is
no need to change something more, click Next to proceed further.
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Reverse Engineer CRUD from a Running Database
Figure 3.34. Generate Seam Entities
On the next page use the Include button to include all the tables from the database and click
Finish.
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Chapter 3. Write Your First P...
Figure 3.35. Selecting Tables
After running the Generate Entities action, you will see new org.domain.workshop.entity classes.
These classes represent insert/update/delete/query logic.
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Reverse Engineer CRUD from a Running Database
Figure 3.36. org.domain.workshop.entity Classes
There are also org.domain.workshop.entity package that contains the JPA classes. These are
the entity beans that are mapped to database tables.
Last, but not least, there are facelets for all of the CRUD screens. The best way to get a feel
for the generated code is to open a browser and play around with the application. Go to http://
localhost:8080/workshop and insert/update/delete/query a few records. There is quite a bit of
AJAX in this application, but which we will explore further later on in the lab. For now, take note
of the page tabs, required field logic and data table sorting in the list pages.
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Chapter 3. Write Your First P...
Figure 3.37. CustomersList.xhtml in the Editor
Congratulations! You now have a fully functioning CRUD application that is already AJAX enabled.
3.5.2. Use Hibernate Tools to Query Data via JPA
Now, it's time to write some JPA queries using the Hibernate perspective in JBoss Developer
Studio.
In the upper right corner of the workbench there is a small icon (see the figure below), click on
it and choose Hibernate.
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Use Hibernate Tools to Query Data via JPA
Figure 3.38. Hibernate Perspective
Look at the Hibernate Configurations view. In the "workshop" project, drill down on the Session
Factory and notice that the JPA entities/attributes are listed in a nice tree view.
Figure 3.39. Hibernate Configurations View
Right click on the Session Factory and select HQL Editor. This will open a JPA query scratch
pad window.
Write your query and click on the "Hibernate Dynamic SQL Preview" tab. You should see the SQL
that will be executed if this JPA query is run.
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Chapter 3. Write Your First P...
Figure 3.40. JPA Query Editor
Run the query by clicking on the green run icon.
The results are listed in the "Hibernate Query Result" tab. There is a "Properties" tab in the
workbench that can be used to see a specific JPA result. These results represent the JPA objects
because our query did not specify column names.
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Use Hibernate Tools to Query Data via JPA
Figure 3.41. Hibernate Query Result View
The query can be refined, and take note that there is nice code completion in the JPA query editor.
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Chapter 3. Write Your First P...
Figure 3.42. Code Completion
A refined query will return results that are more ResultSet oriented. Notice the join logic that JPA
supports.
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Use Hibernate Tools to Query Data via JPA
Figure 3.43. The Results
There was no need to specify an Employees table in the from part of the JPA query because
JPA supports reference traversal via Java class attribute references. Not only are JPA and HQL
queries fully supported, but Criteria based queries can also be written in the Criteria Editor. You
should spend some time tinkering with different queries and possibly Criteria based queries, even
though the instructions are not provided in this lab.
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Chapter 3. Write Your First P...
Figure 3.44. Criteria Editor
3.5.3. Use Hibernate Tools to visualize the Data Model
Now, it’s time to view the data model for the workshop database.
In the Hibernate Configurations view, select "workshop" project and expand the Configuration
node. Select the Customers entity, right click on it, choose Open Mapping Diagram.
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Use Hibernate Tools to visualize the Data Model
Figure 3.45. Mapping Diagram Opening
You see a Diagram tab for the CUSTOMERS table and any tables that have FK references. This
is a handy way to view the data model and JPA mappings. Now, you’ve got access to something
that the Erwin Data Modeler can’t do.
Figure 3.46. Diagram Tab
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Chapter 3. Write Your First P...
3.6. Rich Components
This lab will conclude with one last AJAX twist. In this section we add a RichFaces
inputNumberSlider to the Order Details edit screen.
3.6.1. Add a Richfaces component to the CRUD Application
Switch to Seam perspective, open WebContent/OrderdetailsEdit.xhtml in JBoss Developer
Studio.
Change the form field values using the visual editor. Seam has generated the form field names
that match the database column names. This is not ideal for business users.
Figure 3.47. Form Fields Editing
Also, replace the QTY Ordered input field with a inputNumberSlider. You can use the JBoss
Developer Studio palette or right click on the form and insert the RichFaces component.
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Add a Richfaces component to the CRUD Application
Figure 3.48. RichFaces Component Inserting
One the last option is to use the source view and manually copy the inputNumberSlider markup
listed below:
<rich:inputNumberSlider id="quantityOrdered" required="true"
value="#{orderdetailsHome.instance.quantityordered}"/>
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Figure 3.49. Adding the Source
The end result is an edit page that has better form labels and a new RichFaces control.
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Add a Richfaces component to the CRUD Application
Figure 3.50. The Result Page
Congratulations! You have completed the JBoss Developer Studio lab.
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Chapter 4.
Developing a simple JSP web
application
Note:
We highly recommend developing in Seam. This chapter is for users who for some
reason cannot use Seam.
In this chapter you'll find out how to create a simple JSP application using the JBoss Developer
Studio. The application will show a classic "Hello World!" on the page.
We'll assume that you have already launched JBoss Developer Studio and also that the Web
Development perspective is the current perspective. If not, make it active by selecting Window
> Open Perspective > Web Development from the menu bar or by selecting Window > Open
Perspective > Other... from the menu bar and then selecting Web Development from the Select
Perspective dialog box.
4.1. Setting Up the Project
We are going to start with the creating a Dynamic Web Project with a minimal structure, i.e. with
just required facets. Thus this section will perform you all necessary steps on how to do this.
• Go to the menu bar and select File > New > Other...
• Select Web > Dynamic Web Project in the New Project dialog box
• Click Next
• Enter "jspHello" as a project name
• Then select Minimal Configuration from the list of possible configurations and click Finish
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Figure 4.1. Create New Web Project
The jspHello node should appear in the upper-left Package Explorer view.
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Creating JSP Page
Figure 4.2. New Web Project
4.2. Creating JSP Page
This section covers all the points how to create, edit and then preview JSP page.
In our simple application we need to create only one JSP page which displays a "Hello World!"
message.
• Right click WebContent > New > JSP.
• Type "hello.jsp" for a file name and click the Next button.
In the next window you can choose a template for your jsp page and see its preview.
• Select New JSP File (xhtml) template and click Finish button.
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Figure 4.3. Create JSP Page
Our hello.jsp page will now appear in Project Explorer.
4.2.1. Editing a JSP Page
Let's now make a little change so that a jsp page displays "Hello World!" message.
• Insert this line inside the <body> </body> tag:
<% System.out.println("Hello World!"); %>
Notice that content assist functionality is always available when you are typing:
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Editing a JSP Page
Figure 4.4. Content Assist in JSP Page
After changes made your hello.jsp page should look like this:
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Chapter 4. Developing a simpl...
Figure 4.5. Hello.jsp Page
This line will actually output "Hello World!" message in the Console. To make the message
displayed in the Browser, just replace this line with the simple Hello World!.
4.2.2. web.xml file
When you are creating web project the wizard creates the web.xml for you automatically. The
web.xml file editor provided by JBoss Developer Studio is available in two modes: Tree and
Source.
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Deploying the project
Figure 4.6. Web.xml in Design and Source Mode
Both modes are fully synchronized. Let's add mapping to our hello.jsp page in web.xml file.
• Switch to Source tab.
• Add the next code into <welcome-file-list> :
<welcome-file>hello.jsp</welcome-file>
If you come back to Tree mode you will see that the changes made are automatically reflected
in that mode.
Actually you don't really need to do any configurations right now.
4.2.3. Deploying the project
While creating any web project you could experience a pain writing ant scripts and managing the
packaging even when writing the most trivial web applications. With JBoss Developer Studio you
are saved from such a pain. All you need is to start JBoss Server and launch your application in
your favorite browser.
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You can also create a war archive with JBDS's Archive Tools and export it to any web server.
4.2.3.1. WAR Config
Project archives managing is available through Project Archives view.
• Select Window > Show view > Other > JBoss Tools > Project archives from menu bar
• Select a project in Package Explorer you want to be archived
In Project Archives you will see available archive types for the project:
Figure 4.7. Project Archives
• Click, for example, WAR option to create war archive
In the New WAR dialog you can see automatically selected default values.
Figure 4.8. New WAR Archive
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Deploying the project
• Click Next to see a stub archive configuration for your project:
Figure 4.9. Stub Archive Configuration
• Click Finish. The .war file will appear in Package Explorer and also in Project Archives view
as structure tree:
Figure 4.10. Archive is Created
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Chapter 4. Developing a simpl...
Figure 4.11. Archive in Project Archives View
Via Project Archives view you could now edit your archive, add new folders, publish to server,
and so on:
Figure 4.12. Configure Archive
4.2.3.2. Auto redeploy
When you are creating a web application and register it on JBoss Server it is automatically
deployed into /deploy directory of the server. JBDS comes with the feature of auto-redeploy.
It means that you don't need to restart JBoss Server. Any changes made in the application in
exploded format will trigger a redeployment on the server.
4.2.4. JSP Page Preview
JBDS comes with JSP design-time preview features. When designing JSP pages you can easily
preview how they will look during runtime. You can even attach your stylesheet to the Preview.
• Make a little change to hello.jsp page, e.g. put this code snippet:
<%= new java.util.Date() %>
• Click Save button.
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Launch JSP Project
• Switch to Preview page by clicking Preview tab at the bottom of the page. You will see how
the page will look at runtime.
4.2.5. Launch JSP Project
Let's now launch our project on server. We'll use JBoss Server that is shipped with JBoss
Developer Studio. You can do it by performing one of the following actions:
• Start JBoss Server from JBoss Server view
by clicking the Start the server icon (
).
• Click the Run icon or right click your project folder and select Run As > Run on Server.
If you haven't made any changes in web.xml file or cleared it out you can launch
the application by right clicking the hello.jsp page and selecting Run on the Server (
).
You should see the next page in a Browser :
Figure 4.13. Running Project
Thus with the help of this chapter you've learnt how to organize a Dynamic Web Project with a
minimal configuration, add any staff to it (in our case it's just one jsp page) and deploy and run
it on the JBoss Server shipped with JBDS.
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Chapter 5.
RAD development of a simple JSF
application
Note:
We highly recommend developing in Seam. This chapter is for users who for some
reason cannot use Seam.
In this chapter you will see how to create a simple JSF application being based on "RAD"
philosophy. We will create the familiar Guess Number application. The scenario is the following.
You are asked to guess a number between 0 and 100. If the guess is correct, a success page is
displayed with a link to play again. If the guess is incorrect, a message is printed notifying that a
smaller or a larger number should be entered and the game continues.
We'll show you how to create such an application from scratch, along the way demonstrating
powerful features of JBoss Developer Studio such as project templating, Visual Page Editor, code
completion and others. You will design the JSF application and then run the application from inside
JBoss Developer Studio using the bundled JBoss server.
5.1. Setting up the project
First, you should create a JSF 1.2 project using an integrated JBDS's new project wizard and
predefined templates. Follow the next steps:
• In Web Projects View (if it is not open select Window > Show View > Others > JBoss Tools
Web > Web Projects View) click Create New JSF Project button.
Figure 5.1. Create New JSF Project
• Put GuessNumber as a project name, in JSF Environment drop down list choose JSF 1.2
• Leave everything else as it is and click Finish
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Our project will appear in Project Explorer and Web Projects Views. As you can see JBoss
Developer Studio has created for us the whole skeleton for the project with all needed libraries,
faces-config.xml and web.xml files.
Figure 5.2. New JSF Project
As the project has been set up, new JSP pages should be created now.
5.2. Creating JSP Pages
Here, we are going to add two pages to our application. The first page is inputnumber.jsp. It
prompts you to enter a number. If the guess is incorrect, the same page will be redisplayed with
a message indicating whether a smaller or a larger number should be tried. The second page is
success.jsp. This page will be shown after you guess the number correctly. From this page you
also have the option to play the game again.
Now, we will guide you through the steps on how to do this.
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Creating JSP Pages
• Open faces-config.xml file
• Right click anywhere on the diagram mode
• From the context menu select New View
Figure 5.3. Create New View
• Type pages/inputnumber as the value for From-view-id
• Leave everything else as is and click Finish
• In the same way create another jsf view. Type pages/success as the value for From-view-id
• Select File > Save
On the diagram you will see two created views.
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Chapter 5. RAD development of...
Figure 5.4. New Views
5.3. Creating Transition between two views
Then, we should create connection between jsp pages.
• In the diagram, select the Create New Connection icon third from the top along the upper left
side of the diagram to get an arrow cursor with a two-pronged plug at the arrow's bottom
Figure 5.5. Create Connection
• Click on the pages/inputnumber page icon and then click on the pages/success page icon
A transition should appear between the two icons of views.
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Creating Resource File
Figure 5.6. Created Connection
• Select File > Save from the menu bar
5.4. Creating Resource File
A resource file is just a file with a .properties extension for collecting text messages in one central
place. JBoss Developer Studio allows you to create quickly a resource file. The messages stored
in resource file can be displayed to you on a Web page during application execution.
With resource file first, you don't hard code anything into the JSP pages. And second, it makes it
easier to translate your application to other languages. All you have to do is to translate all your
messages to the other language and save them in a new properties file with a name that ends
with the appropriate ISO-639 language code.
It is a good idea to keep your resources inside the JavaSource folder, where you keep your .java
files. Every time you build the project, all .properties files will then be copied to the classes folder
by default.
• Right click JavaSource folder and select New > Folder
• Type game for Folder name and click Finish
Your resource file and java bean will be stored in this folder.
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• Right click on game folder and select New > Properties File
• Type messages as the value for "name" attribute and click Finish
JBoss Developer Studio will automatically open messages.properties file for editing.
Figure 5.7. Messages.properties File
• Click Add button for adding new attribute to your resource file
• Type how_to_play for "name" and Please pick a number between 0 and 100. for value
• Click Finish
• In such a way add the next properties:
makeguess_button=Make Guess
trayagain_button=Play Again?
success_text=How cool.. You have guessed the number, {0} is correct!
tryagain_smaller=Oops..incorrect guess. Please try a smaller number.
tryagain_bigger=Oops..incorrect guess. Please try a bigger number.
• Click File > Save from the menu bar
Your .properties file should now look like follows:
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Creating Java Bean
Figure 5.8. Properties are Added
Up and Down buttons allow you to move you attribute on the list. For delete the attribute, choose
it and press Delete button.
If you want to change a value or a name of your attribute, click on it and than on Edit button.
5.5. Creating Java Bean
In this section you'll see how to create a Java bean that will hold business logic of our application.
• Right click game folder
• Select New > Class
• Type NumberBean for bean name
A java bean is created.
• Declare the variable of your entered number:
Integer userNumber;
JBDS allows to quickly generate getters and setters for java bean.
• Right click NumberBean.java in Package Explorer
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• Select Source > Generate Getters and Setters...
• Check userNumber box and click OK
Figure 5.9. Generate Getters and Setters
• Add the declaration of the second variable
int randomNumber;
• .. other bean methods:
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Creating Java Bean
public NumberBean ()
{
randomNumber = (int)(Math.random()*100);
System.out.println ( "Random number: "+randomNumber);
}
public String playagain ()
{
FacesContext context = FacesContext.getCurrentInstance();
HttpSession session =
(HttpSession) context.getExternalContext().getSession(false);
session.invalidate();
return "playagain";
}
public String checkGuess ()
{
// if guessed, return 'success' for navigation
if ( userNumber.intValue() == randomNumber )
{
return "success";
}
else
{
FacesContext context = FacesContext.getCurrentInstance();
ResourceBundle bundle = ResourceBundle.getBundle("game.messages",
context.getViewRoot().getLocale());
String msg = "";
// if number bigger, get appropriate message
if ( userNumber.intValue() > randomNumber )
msg = bundle.getString("tryagain_smaller");
else // if number smaller, get appropriate message
msg = bundle.getString("tryagain_bigger");
// add message to be displayed on the page via <h:messages> tag
context.addMessage (null, new FacesMessage(msg));
// return 'tryagain' for navigation
return "tryagain";
}
}
• And the import declarations:
import javax.faces.context.FacesContext;
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import javax.servlet.http.HttpSession;
import javax.faces.application.FacesMessage;
import java.util.Locale;
import java.util.ResourceBundle;
The whole java bean should look as follows:
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpSession;
import javax.faces.application.FacesMessage;
import java.util.Locale;
import java.util.ResourceBundle;
public class NumberBean
{
Integer userNumber;
int randomNumber; // random number generated by application
public Integer getUserNumber ()
{
return userNumber;
}
public void setUserNumber (Integer value)
{
this.userNumber = value;
}
// constructor, generates random number
public NumberBean ()
{
randomNumber = (int)(Math.random()*100);
System.out.println (
"Random number: " + randomNumber);
}
public String playagain ()
{
FacesContext context = FacesContext.getCurrentInstance();
HttpSession session =
(HttpSession) context.getExternalContext().getSession(false);
session.invalidate();
return "playagain";
}
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Editing faces-config.xml File
// check if user guessed the number
public String checkGuess ()
{
// if guessed, return 'success' for navigation
if ( userNumber.intValue() == randomNumber )
{
return "success";
}
// incorrect guess
else
{
// get a reference to properties file to retrieve messages
FacesContext context = FacesContext.getCurrentInstance();
ResourceBundle bundle =
ResourceBundle.getBundle("game.messages",
context.getViewRoot().getLocale());
String msg = "";
// if number is bigger, get appropriate message
if ( userNumber.intValue() > randomNumber )
msg = bundle.getString("tryagain_smaller");
else // if number smaller, get appropriate message
msg = bundle.getString("tryagain_bigger");
// add message to be displayed on the page via <h:messages> tag
context.addMessage (null, new FacesMessage(msg));
// return 'tryagain' for navigation
return "tryagain";
}
}
}
5.6. Editing faces-config.xml File
In this section you know about faces-config.xml file.
This file holds two navigation rules and defines the backing bean used.
• Open faces-config.xml file in a source mode
• Add here one more navigation rule and a managed bean declarations that the content of the
file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee
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Chapter 5. RAD development of...
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2_.xsd">
<navigation-rule>
<from-view-id>*</from-view-id>
<navigation-case>
<from-outcome>playagain</from-outcome>
<to-view-id>/pages/inputnumber.jsp</to-view-id>
</navigation-case>
</navigation-rule>
<navigation-rule>
<from-view-id>/pages/inputnumber.jsp</from-view-id>
<navigation-case>
<from-outcome>success</from-outcome>
<to-view-id>/pages/success.jsp</to-view-id>
</navigation-case>
</navigation-rule>
<managed-bean>
<managed-bean-name>NumberBean</managed-bean-name>
<managed-bean-class>game.NumberBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>
The first navigation rule states that from any page (* stands for any page) an outcome of playagain
will take you to /pages/inputnumber.jsp . Outcome values are returned from backing bean
methods in this example. The second navigation rule states that if you are at the page /pages/
inputnumber.jsp , and the outcome is success, then navigate to the /pages/success.jsp page.
5.7. Editing the JSP View Files
Now, we will continue editing the JSP files for our two "views" using Visual Page Editor.
5.7.1. Editing inputnumber.jsp page
First, let's dwell on how to edit inputnumber.jsp.
On this page we will have an output text component displaying a message, a text field for user's
number entering and a button for input submission.
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Editing inputnumber.jsp page
• Open inputnumber.jsp by double-clicking on the /pages/inputnumber. jsp icon
The Visual Page Editor will open in a screen split between source code along the top and a
WYSIWIG view along the bottom. You can see that some JSF code will be already generated as
we choose a template when creating the page.
At the beginning it's necessary to create a <h:form> component where all others components
are put.
• Place the mouse cursor inside <f:view> </f:view>
• Go to JBoss Tools Palette and expand JSF HTML folder by selecting it
• Click on <h:form> tag
Figure 5.10. Insert h:form
• In the dialog Insert Tag select id and click on this line below the value header. A blinking cursor
will appear in a input text field inviting to enter a value of id
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Chapter 5. RAD development of...
Figure 5.11. Define Id of Form
• Type inputNumbers and click Finish
In source view you can see the declaration of a form.
Figure 5.12. Created Form
First let's declare the properties file in inputnumber.jsp page using the loadBundle JSF tag.
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Editing inputnumber.jsp page
• Put this declaration on the top of a page, right after the first two lines:
<f:loadBundle basename="game.messages" var="msg"/>
As always JBDS provides code assist:
Figure 5.13. Code Assist
• Switch to Visual tab, so it could be possible to work with the editor completely in its WYSIWYG
mode
• Click on outputText, drag the cursor over to the editor, and drop it inside the blue box in the
editor
• Select value and click on this line below "value" header
• Click ... button next to the value field
JBDS will nicely propose you to choose within available values:
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Chapter 5. RAD development of...
Figure 5.14. Choose Value
• Expand Resource Bundles > msg
• Select how_to_play value and click Ok. Then click Finish
Figure 5.15. Selecting Value
The text will appear on the page:
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Editing inputnumber.jsp page
Figure 5.16. Created OutputText Component
• Switch to Source mode and insert <br/> tag after <h:outputText> component to make a new
line.
• Click Save button.
• On the Palette click on inputText, drag the cursor over to the editor, and drop it inside the
editor after the text.
• Switch to a Source mode and insert <br/> tag after <h:outputText> component to make a
new line
• Click Save button
• On the Palette click on inputText, drag the cursor over to the editor, and drop it inside the
editor after the text
• Select value and click on this line below "value" header
• Click ... button next to the value field
• Expand Managed Beans > NumberBean
• Select userNumber value and click Ok
• Switch Advanced tab
• Select id and click on this line below "value" header
• Type userNumber in text field
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Chapter 5. RAD development of...
• Select required and click on this line below "value" header
• Click ... button next to the value field
• Expand Enumeration and select true as a value
Figure 5.17. Add "required" Attribute
• Click Ok, then click Finish
• Go to Source mode
• Add the validation attribute to <f:validateLongRange> for user input validation
<h:inputText id="userNumber" value="#{NumberBean.userNumber}" required="true">
<f:validateLongRange minimum="0" maximum="100"/>
</h:inputText>
• Click Save button
• Again select Visual mode
• On the Palette, click on commandButton, drag the cursor over to the editor, and drop it inside
the editor after the inputText component.
• In the editing dialog select value and click on this line below "value" header
• Click ... button next to the value field
• Expand Resource Bundles > msg and select makeguess_button as a value
• Click Ok
100
Editing success.jsp page
• Select action and click on this line below "value" header
• Type NumberBean.checkGuess in text field
• Click Finish
• In Source mode add <br/> tags between <outputText> , <inputText> and <commandButton>
components to place them on different lines
inputnumber.jsp page should look like this:
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<f:loadBundle basename="game.messages" var="msg" />
<html>
<head>
<title></title>
</head>
<body>
<f:view>
<h:form id="inputNumbers">
<h:outputText value="#{msg.how_to_play}" />
<br />
<h:messages style="color: blue" />
<br />
<h:inputText value="#{NumberBean.userNumber}" id="userNumber"
required="true">
<f:validateLongRange minimum="0" maximum="100" />
</h:inputText>
<br />
<br />
<h:commandButton value="#{msg.makeguess_button}"
action="#{NumberBean.checkGuess}" />
</h:form>
</f:view>
</body>
</html>
5.7.2. Editing success.jsp page
In the same way like inputnumber.jsp, edit success.jsp page. Its whole source should be the next:
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
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Chapter 5. RAD development of...
<f:loadBundle basename="game.messages" var="msg"/>
<html>
<head>
<title></title>
</head>
<body>
<f:view>
<h:form id="result">
<h:outputFormat value="#{msg.success_text}">
<f:param value="#{NumberBean.userNumber}" />
</h:outputFormat>
<br />
<br />
<h:commandButton value="#{msg.trayagain_button}"
action="#{NumberBean.playagain}" />
</h:form>
</f:view>
</body>
</html>
Again you can use code assist provided by JBDS when editing jsp page:
Figure 5.18. Code Assist for <f:param>
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Creating index.jsp page
This page, success.jsp, is shown if you correctly guessed the number. The <h:outputFormat>
tag will get the value of success_text from the properties file. The {0} in success_text will be
substituted for by the value of the value attribute within the <f:param> tag during runtime.
At the end, you have a button which allows you to replay the game. The action value references a
backing bean method. In this case, the method only terminates the current session so that when
you are shown the first page, the input text box is clear and a new random number is generated.
• Switch to Preview mode to see how this page will look in a browser:
Figure 5.19. Success.jsp in Preview Mode
5.8. Creating index.jsp page
Now you know how to create index.jsp page.
The index.jsp page is the entry point of our application. It's just forwarding to inputnumber.jsp page.
• Right click WebContent > New > JSP File
• Type index for name field and choose JSPRedirect as a template
• Click Finish
• The source for this page should be like the following:
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<body>
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Chapter 5. RAD development of...
<jsp:forward page="/pages/inputnumber.jsf" />
</body>
</html>
Note the .jsf extension of a page. It means that we trigger the JSF controller servlet to handle the
page according the servlet mapping in the faces-config.xml file.
5.9. Running the Application
Finally, we have all the pieces needed to run the application.
• Start up JBoss server by clicking on the Start icon in JBoss Server view. (If JBoss is already
running, stop it by clicking on the red icon and then start it again. After the messages in the
Console tabbed view stop scrolling, JBoss is available)
• Right-click on project Run AS > Run on Server
• Play with the application by entering correct as well as incorrect values
Figure 5.20. You are Asked to Enter a Number Between 0 and 100
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Running the Application
Figure 5.21. Your Input is Validated and an Error Message is Displayed if
Invalid Input was Entered
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Chapter 5. RAD development of...
Figure 5.22. After You Enter a Guess, the Application Tells You Whether a
Smaller or a Larger Number Should be Tried
106
Running the Application
Figure 5.23. Your Guess is Correct
107
Chapter 6.
Project Examples
JBoss Developer Studio provides an option to download and import a ready-made project that
you can explore and derive some useful technology implementation lessons.
6.1. Downloading a Project Example
To download a project example and start working with it you need to take a few steps:
• Go to the menu bar and select File > New > Other...
• Select Jboss Tools > Project Examples(You can also call the Project Examples from menu bar:
Help > Project Examples...)
Figure 6.1. Project Examples
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Chapter 6. Project Examples
• Now in the New Project Example dialog you can select a project you would like to explore and
a site to download it from
Project Examples Wizard provides a filter field to more easily locate the project examples you
want, so you can type in the project you would like to explore in the field.
Figure 6.2. Selecting a Project Example
Note:
The Show the Quick Fix Dialog option is described in the Quick Fixes section.
• Press Finish to start downloading the project from the repository
110
Quick Fixes
When downloading is finished the project will be imported automatically and you will be able to
see it in the Package Explorer.
Now you can run the application on the server.
Figure 6.3. Seam Demo Application run on the Server
6.2. Quick Fixes
Project Examples Wizard has an option for making quick fixes for the imported project to easily
fix possible issues like missing servers, Seam runtimes etc.
To enable quick fixing option you need to check the Show the Quick Fix dialog while choosing
the Project Example.
When the project you selected is downloaded it will be checked for missing dependences and if
there are some you will see a dialog listing the problems.
111
Chapter 6. Project Examples
Figure 6.4. Quick Fix Dialog box
To fix the problem you need to:
• Select the problem from the list
• Click Quick Fix button
You will be offered a solution or a number of solutions to the problem.
112
Quick Fixes
Figure 6.5. Quick Fix Dialog box: Selecting a Fix
In this case(see the image above), when the Finish button is pressed, Seam Settings dialog box
will be displayed where you need to provide a path to the Seam environment to fix the issue.
When the problem is fixed you will be returned to the Quick Fix dialog box with the remaining
problems to be fixed.
113
Chapter 7.
FAQ
For more information on JBoss Developer Studio features, refer to the following FAQ to get the
answers on the most "popular" questions.
7.1. What should I do if Visual Page Editor does not
start under Linux
Linux users may need to do the following to get the Visual Page Editor to work correctly on their
machines.
1. On Red Hat based Linux distributions install the xpLib.i386 package
2. Type
ln -s libstdc++.so.5.0.7 libstdc++.so.5
3. and/or use
yum install libXp
4. Open the JBDS perspective. If you see the Help view open, close it and restart JBDS
5. If none of these work, do the following:
• Clear the Eclipse log file, <workspace>\.metadata\.log
• Start Eclipse with the -debug option:
eclipse -debug
• Post the Eclipse log file (<workspace>\.metadata\.log) on the forums.
7.2. Do I need to have JBoss Server installed to run
JBoss Developer Studio?
No. JBoss Developer Studio already comes bundled with JBoss Server. We bundle it together so
that you don't need to download any additional software and can test your application in a Web
browser right away.
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Chapter 7. FAQ
If you want to use a different JBoss server installation, after JBoss Developer Studio is installed
open Servers View (select Window > Show View > Others > Server > Servers), then right click on
this view > New > Server and follow the wizards steps to point to another Jboss Server installation.
JBoss Developer Studio works with any servlet container, not just JBoss. For more information
on deployment, please see the Deploying Your Application section.
7.3. I have an existing Seam 1.2.1 project. Can I migrate/
import the project to a JBDS Seam project?
We highly recommend you to create Seam 1.2.1 project using the JBDS. In other case try to do
manually:
• Create a Seam Web project to get the JBoss tools structure
Then from your Seam 1.2.1 seam-gen project start doing the following:
• Copy src to src
• Copy view to Web content
• Copy resources individual files to where they are in the seam web project etc.
7.4. I have an existing Struts or JSF project. Can I open
the project in JBDS?
Yes. From main menu select File > Import > Other > JSF Project (or Struts Project) and follow
wizards steps.
7.5. Can I import a .war file?
Yes. Select File > Import > Web > WAR file, then follow importing steps.
7.6. Is it possible to increase the performance of
Eclipse after installing your product?
JBoss Developer Studio preconfigures eclipse via the eclipse.ini file to allocate extra memory, but
if you for some reason need more memory then by default, you can manually make adjustments
in this file. For example:
-vmargs -Xms128m -Xmx512m -XX:MaxPermSize=128m
116
How can I add my own tag library to the JBoss Tools Palette?
7.7. How can I add my own tag library to the JBoss
Tools Palette?
See Adding Tag Libraries in Visual Web Tools Guide.
7.8. How to get Code Assist for Seam specific
resources in an externally generated project?
To get Code Assist for Seam specific resources in an externally generated project, you should
enable Seam features in Project Preferences. Right click an imported project and navigate
Properties > Seam Settings. Check Seam support box to enable all available Seam Settings.
7.9. How to import an example Seam project from
jboss-eap directory?
To import an example Seam project from jboss-eap into your working directory, you should
perform the following steps:
• Go to New > Other > Java Project from Existing Buildfile
• Point to the build.xml of any chosen project by pressing Browse button
• Hit Finish to open the project
As these seam examples are non WTP projects, next you should enable Seam support for them.
To do that, right click the project and go to Properties > Seam Settings.
7.10. Is a cross-platform project import possible for
JBDS?
Yes. You can easily import created in Linux JSF, Struts or Seam project to Windows and vice
versa.
To do the transferring JSF, Struts or Seam project, go to Menu > Import > General > Existing
Projects into Workspace, select the folder where your project stored and press Finish.
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Chapter 8.
Further Reading
• Seam Dev Tools Reference Guide (html)
This guide helps you to understand what Seam is and how to install Seam plug-in into Eclipse.
It tells you the necessary steps to start working with Seam Framework and assists in a simple
Seam Project creation. Also you will learn how to create and run the CRUD Database Application
with Seam as well as find out what Seam Editors Features and Seam Components are.
<listitem>
Visual Web Tools Reference Guide (html) provides general orientation and an overview of
JBDS visual web tools functionality. This guide discusses the following topics: editors, palette,
web properties view, openOn, content assist, RichFaces support.
<listitem>
JBoss Server Manager Reference Guide (html)
This guide covers the basics of working with the JBoss server manager. You will read how
to install runtimes and servers and quickly learn how to configure, start, stop the server and
know how deployment and archiving process. You will find out how to manage installed JBoss
Servers via JBoss AS Perspective. You will also read how to deploy modules onto the server.
</listitem>
<listitem>
jBPM Tools Reference Guide (html)
With jBPM Tools Reference Guide we'll help you to facilitate a cross-product learning and know
how you can speed your development using special editors and visual designers. We'll also
guide you through the steps on how to create a simple process and test it within jBPM jPDL
perspective.
<listitem>
Hibernate Tools Reference Guide (html)
Throughout this guide you will learn how to install and use Hibernate Tools bath via Ant
and through Eclipse. We'll supply you with the information on how to create mapping files,
configuration file as well as a file for controlling reverse engineering by using specific wizards
that Hibernate tooling provides. Also you will know about Code Generation and peculiarities of
work within Hibernate Console Perspective.
<listitem>
ESB Editor Reference Guide (html)
This guide provides you with the information on ESB Editor and all necessary wizards for ESB
files development.
<listitem>
JBoss Portal Tools Reference Guide (html)
The guide gives a detail look at how you can easily build a Portlet Web Application with JBoss
Tools and deploy it onto JBoss Portal.
119
Chapter 8. Further Reading
<listitem>
JBoss WS User Guide (html)
This guide gives you practical help on JBossWS usage. You will learn how to create a web
service using JBossWS runtime, find out how to create a web service client from a WSDL
document using JBoss WS and also see how to set your development environment.
</listitem>
<listitem>
Smooks Tools Reference Guide (html)
This guide is packed with useful and easy-to-understand information about graphical,
configuration and source editor pages.
</listitem>
<listitem>
Drools Tools Reference Guide (html)
The guide help you to discover how to create a new Drools project, use debugging rules and
work with different editors.
</listitem>
<listitem>
JMX Tools Reference Guide (html)
With the help of this guide you'll explore the best practices to follow when working with MBean
Explorer, MBean Editor, Connections and etc.
</listitem>
<listitem>
JSF Tools Tutorial (html)
This tutorial will describe how to deal with classic/old style of JSF development and how to
create a simple JSF application using the JBoss Developer Studio.
</listitem>
<listitem>
JSF Tools Reference Guide (html)
From this guide you'll discover all peculiarities of work at a JSF project. You'll learn all shades
that cover the process of project creation and take a closer look at the JSF configuration file.
Also you'll get to know managed beans and how to work with them and find out, how to create
and register a custom converter, custom validator and referenced beans in a JSF project.
<listitem>
Struts Tools Reference Guide (html)
In Struts Tools Reference Guide you will learn how to create and work with a new struts project.
This guide also provides information about graphical editor for struts configuration files, tiles
files, and struts validation files.
</listitem>
<listitem>
Struts Tools Tutorial (html)
120
This tutorial will describe the classical style of Struts development, and will step-by-step show
you how to create a simple Struts application in JBoss Developer Studio.
</listitem>
<listitem>
Exadel Studio Migration Guide (html)
This document is intended to help you to migrate an existing Exadel JSF or Struts projects from
Exadel Studio into JBoss Developer Studio.
</listitem>
</listitem>
If there's anything we didn't cover in this guide, please feel free to visit our JBoss Developer
Studio Users Forum or JBoss Tools Users Forum to ask questions. There we are also looking
for your suggestions and comments.
</listitem>
</listitem>
</listitem>
</listitem>
</listitem>
121
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