Configure JSP engine parameters

 

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Overview

WebSphere Application Server does not support the modification of deployment descriptor extension parameters through the Administrative Console or through administrative scripting.

To add, change or delete JSP engine configuration parameters...

1. Open WEB-INF/ibm-web-ext.xmi from the configuration directory...

   {WAS_ROOT}/profiles/profile/config/cells/cell/applications/appname/deployments/deployed/WebModule/

   ...or from the binaries directory if an application was deployed into WAS with the flag...

   Use Binary Configuration

   ...set to true...

   {WAS_ROOT}/profiles/profile/installedApps/node/AppName/WebModule/

2. Edit the WEB-INF/ibm-web-ext.xmi file.

   • To add configuration parameters, use the following format: xmi:id="JSPAttribute_6" name="parametername" value="parametervalue"/>

   • To delete configuration parameters, either delete the line from the file, or enclose the statement with <!-- --> tags.

3. Save the file.

4. Restart the Enterprise Application.

   It is not necessary to restart the server for parameter changes to take effect. However, some JSP engine configuration parameters affect the Java source code that is generated for a JSP. If such a parameter is changed, then retranslate the JSP files in the Web module to regenerate Java source. Use the batch compiler to retranslate all JSP files in a Web module.

   The batch compiler uses the JSP engine configuration parameters that you have set in the ibm-web-ext.xmi file, unless you specifically override them.

 

Example WEB-INF/ibm-web-ext.xmi

<?xml version="1.0" encoding="UTF-8"?>

<webappext:WebAppExtension xmi:version="2.0" 
                           xmlns:xmi=http://www.omg.org/XMI
                           xmlns:webappext="webappext.xmi" 
                           xmlns:webapplication="webapplication.xmi" 
                           xmi:id="WebAppExtension_1"   
                           reloadInterval="9" 
                           reloadingEnabled="true" 
                           defaultErrorPage="error.jsp" 
                           additionalClassPath="" 
                           fileServingEnabled="true" 
                           directoryBrowsingEnabled="false" 
                           serveServletsByClassnameEnabled="true" 
                           autoRequestEncoding="true" 
                           autoResponseEncoding="false"
                           <webApp href="WEB-INF/web.xml#WebApp_1"/>
   
   <jspAttributes xmi:id="JSPAttribute_1" name="useThreadTagPool" value="true"/>
   <jspAttributes xmi:id="JSPAttribute_2" name="verbose" value="false"/>
   <jspAttributes xmi:id="JSPAttribute_3" name="deprecation" value="false"/>
   <jspAttributes xmi:id="JSPAttribute_4" name="reloadEnabled" value="true"/>
   <jspAttributes xmi:id="JSPAttribute_5" name="reloadInterval" value="5"/>
   <jspAttributes xmi:id="JSPAttribute_6" name="keepgenerated" value="true"/>

   <!--<jspAttributes xmi:id="JSPAttribute_7" name="trackDependencies" value="true"/> -->
   <jspAttributes xmi:id="JSPAttribute_8" name="jspCompileClasspath" value=""/>

</webappext:WebAppExtension>

Note: The integer n in JSPattribute_n has to be unique within the file.

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See Also

JavaServer Pages
Global tag libraries

 

See Also

dbmodify tag JavaServer Pages syntax
JSP batch compiler tool
Web applications: Resources for learning

 

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