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<title>How to setup a basic Struts project using Eclipse IDE - Apache Struts</title>
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<h1 id="eclipse">How to setup a basic Struts project using Eclipse IDE</h1>
<h2>Legal Disclamer</h2>
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<p>
* DISCLAIMER - This simple How-To shows you one of many ways to setup a working project using<br />
the Struts framework. This is mainly geared toward struts users who are new to Eclipse, and<br />
don't want to spend a lot of time figuring out the differences between their old IDE (if any)<br />
and this one.<br />
<br />
I will also apologize ahead of time for the formatting of this page.<br />
</p>
In this How-To, I will demonstrate (using Eclipse 2.0.1) how to setup, compile, run,<br />
and debug the struts-example web application that is bundled with the distribution.<br />
<br />
Next, I will modify the code to pull some data from a MySql database using the popular <br />
relational mapping tool OJB. (This is actually quite simple)
</div>
<h2>Let's get started</h2>
<div class="indent">
Before we begin, you will need to create a directory somewhere to store your project.<br />
I typically use C:\personal\development\Projects\(some project)<br />
Once that's done, extract the struts-example.war to that directory <br />
(using your favorite zip utility)<br />
<br />
Delete the META-INF folder because this will be created during the build/jar/war process.<br />
Add a build.xml file to the project root. I use something like this:
<pre>
<project name="Struts Example" default="main" basedir=".">
<!-- This is a basic build script, only the minimums here -->
<!-- Tell ant to use my environment variables -->
<property environment="env"/>
<property file="./build.properties"/>
<!--
This build script assumes Tomcat 5 is the servlet container.
Modify as necessary if a different container is being used.
-->
<property name="tomcat.home" value="${env.CATALINA_HOME}"/>
<property name="servlet.jar" value="${tomcat.home}/common/lib/servlet-api.jar"/>
<property name="jsp.jar" value="${tomcat.home}/common/lib/jsp-api.jar"/>
<property name="deploy.dir" value="${tomcat.home}/webapps"/>
<property name="build.compiler" value="modern"/>
<property name="build.dir" value="./WEB-INF/classes" />
<property name="src.dir" value="./WEB-INF/src"/>
<property name="war.file" value="struts-example"/>
<property name="war.file.name" value="${war.file}.war"/>
<path id="project.class.path">
<fileset dir="./WEB-INF/lib/">
<include name="**/*.jar"/>
</fileset>
<pathelement path="${src.dir}"/>
<pathelement path="${servlet.jar}"/>
<pathelement path="${jsp.jar}"/>
</path>
<target name="clean">
<delete dir="${build.dir}" includeEmptyDirs="true" />
</target>
<target name="prep">
<mkdir dir="${build.dir}"/>
</target>
<target name="compile">
<javac srcdir="${src.dir}"
destdir="${build.dir}"
debug="on"
deprecation="on">
<include name="**/*.java"/>
<classpath refid="project.class.path"/>
</javac>
</target>
<target name="cleanWebApp">
<delete file="${deploy.dir}/${war.file.name}" />
<delete dir="${deploy.dir}/${war.file}" includeEmptyDirs="true" />
</target>
<target name="war">
<war warfile="${war.file.name}" webxml="./WEB-INF/web.xml">
<fileset dir="./" includes="**/*.*" excludes="*.war, **/*.nbattrs, web.xml, **/WEB-INF/**/*.*, **/project-files/**/*.*"/>
<webinf dir="./WEB-INF" includes="**/*" excludes="web.xml, **/*.jar, **/*.class"/>
<lib dir="./WEB-INF/lib"/>
<classes dir="${build.dir}"/>
<classes dir="${src.dir}">
<include name="**/*.properties"/>
</classes>
</war>
</target>
<target name="deploy">
<copy todir="${deploy.dir}">
<fileset dir="./" includes="${war.file.name}"/>
</copy>
</target>
<target name="main" depends="clean, prep, cleanWebApp, compile, war"/>
</project>
</pre>
<ol>
<li>
Create a new project.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style01.jpg" />
<br />
<br />
<br />
</li>
<li>
New Java Project<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style02.jpg" />
<br />
<br />
<br />
</li>
<li>
Browse for the folder you created for your project.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style03.jpg" />
<br />
<br />
<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style04.jpg" />
<br />
<br />
<br />
</li>
<li>
Eclipse will detect your source folders from any subdirectories under your project.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style05.jpg" />
<br />
<br />
<br />
</li>
<li>
In our case, this is where the src folder was placed.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style06.jpg" />
<br />
<br />
<br />
</li>
<li>
Default standard libs are automatically added depending on the type of project.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style07.jpg" />
<br />
<br />
<br />
</li>
<li>
Add the existing web app jars.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style08.jpg" />
<br />
<br />
<br />
</li>
<li>
Now we need to add a few jars from the file system.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style09.jpg" />
<br />
<br />
<br />
</li>
<li>
We always need this one (servlet.jar)<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style10.jpg" />
<br />
<br />
<br />
</li>
<li>
Ahhhh...everything looks ok for now. You can always go back and modify these settings <br />
later.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style11.jpg" />
<br />
<br />
<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style12.jpg" />
<br />
<br />
<br />
</li>
<li>
When everything settles down, you should see something like this (of course, it might
look different depending on your installation/customization):<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style13.jpg" />
<br />
<br />
<br />
</li>
<li>
Compilation warnings and errors are detected immediately. In this screenshot, I drill down<br />
into the source folder, package, file, class, and double click on the method....which <br />
brings up the source editor. I hover the mouse over the offending warning to see <br />
a description of what's wrong.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style14.jpg" />
<br />
<br />
<br />
</li>
<li>
I changed ApplicationConfig to ModuleConfig, then saved and now I see new errors.<br />
You can right click and import ModuleConfig right from the error.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style15.jpg" />
<br />
<br />
<br />
</li>
<li>
A quick look at the import section.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style18.jpg" />
<br />
<br />
<br />
</li>
<li>
Right click, Source, Organize Imports<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style20.jpg" />
<br />
<br />
<br />
</li>
<li>
Ahhhh...better<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style21.jpg" />
<br />
<br />
<br />
</li>
<li>
From the Package Explorer, right click your build.xml and run Ant:<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style22.jpg" />
<br />
<br />
<br />
</li>
<li>
Is this cool or what?<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style23.jpg" />
<br />
<br />
<br />
</li>
<li>
Uh Oh!<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style24.jpg" />
<br />
<br />
<br />
</li>
<li>
Quick look at what jars are being used to process my build.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style26.jpg" />
<br />
<br />
<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style25.jpg" />
<br />
<br />
<br />
</li>
<li>
I simply removed all the existing jars from the IDE's Ant configuration and<br />
added all from my own installation.<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style27.jpg" />
<br />
<br />
<br />
</li>
<li>
Can't forget that last one<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style28.jpg" />
<br />
<br />
<br />
</li>
<li>
Everything went ok (for me)<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style30.jpg" />
<br />
<br />
<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style29.jpg" />
<br />
<br />
<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style31.jpg" />
<br />
<br />
<br />
</li>
<li>
Time to test-drive<br />
<img alt="" src="../images/how-to/eclipse/developing-eclipse-style32.jpg" />
<br />
<br />
<br />
</li>
</ol>
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