Pre-compiled JSPs getting re-compiled by the server

Question

For our project we are using wlappc to pre-compile JSPs and generate EJB classes. We are using the split directory format, so this is what the task looks like -
<target name="appCompile" depends="init" >
<delete dir="${ear.dist}" />
<mkdir dir="${ear.dist}" />
<wlpackage srcdir="${ear.src}" destdir="${ear.build}"
toDir="${ear.dist}" />
     <wlappc source="${ear.dist}" verbose="true" classpath="${classpath}" />
</target>
After this, we are using wldeploy to deploy the application to another server.
This is how the task looks like -
     <target name="beadeploy" depends="init" >
     <wldeploy action="deploy"
          source="${src.dir}/dist/myapp.ear"
          name="myApplication" remote="true"
          user="${deploy.username}" password="${deploy.password}"
          verbose="true" adminurl="t3://${deploy.host}:${deploy.port}"
          upload="true"
          debug="true" targets="${deploy.target}"/>          
     </target>
The problem that I am facing is that, even after re-compiling the JSPs, they get compiled again by the server when accessed for the first time !
We using Weblogic 8.1.2.0. Can you please provide a soplution for this ?

Answer 1

Hi,
The following steps help you troubleshoot why you may be having problems with JSPs recompiling:
1. When invoking jspc, your classpath must contain the same release, service-pack, and any temporary patches as the servers you wish to deploy on. Otherwise, the Server will read the JSPs as being compiled on a different version of the WebLogic, and will recompile them all.
2. You should invoke jspc from the root directory of your open-directory exploded) WebApp or specify -webapp) and use the -d option to deploy the generated classes to the WEB-INF/classes directory. You can then archive these JSP classes into a JAR if you wish from the WEB-INF/classes directory.
3. The JSPs should then be deployed either individually to the WEB-INF/classes/jsp_servlet directory or in a JAR file under the WEB-INF/lib directory.
4. One other thing that could cause JSPs to be recompiled is if the timestamp of the class is different from that of the source.
Also, if your ant classpath is different from whatever WLS-related classpath entries you use to run WLS, this may cause problems, too.
-- Prasanna
Prasanna Yalam