There is a lot of information about how to precompile JSPs during building phase, but no complete solution. Ones write how to make JSPs precompiled, but don't how to get a working web.xml file. I even seen a statement like this one: you can get output of webXmlFragment and put it in your web.xml by hand. Sounds great. Doesn't fit our need at all.
So, the task is:
- you have web.xml that already contains all necessary settings for your application
- you have a lot of JSPs
- you'd like to get .class files for all of your JPSs
- you'd like to get jsp's servlets mapping added to your present web.xml
I use NetBeans prepared project structure here, but this solution can be used in plain build files with different project structure after some tuning.
You have to make 3 things:
1) setup following properties
libs.jasper.classpath - to jasper* jars located inside your tomcat / jboss installation
libs.javax.servlet.classpath - to javax.servlet.jar and javax.servlet.jsp.jar
jboss.home - to your jboss configuration (for ex. /usr/local/jboss/server/default)
2) add following code to your build.xml
======
<target name="-post-compile" depends="jspc, compile-jsp, merge-web.xml"/>
<target name="jspc">
<mkdir dir="${basedir}/${build.generated.dir}/etc"/>
<taskdef classname="org.apache.jasper.JspC" name="jasper2" >
<classpath id="jspc.classpath">
<path path="${libs.jasper.classpath}"/>
<path path="${libs.javax.servlet.classpath}"/>
<path path="${libs.struts.classpath}"/>
<pathelement location="${java.home}/../lib/tools.jar"/>
<pathelement location="classes"/>
</classpath>
</taskdef>
<mkdir dir="etc"/>
<jasper2
package="com.mawisoft.jsp"
validateXml="false"
uriroot="${build.web.dir.real}"
webxml="${basedir}/${build.generated.dir}/etc/web.xml"
outputDir="${basedir}/${build.generated.dir}/src"/>
</target>
<target name="compile-jsp">
<javac srcdir="${basedir}/${build.generated.dir}/src" destdir="${build.web.dir}/WEB-INF/classes">
<classpath>
<path path="${libs.jasper.classpath}"/>
<path path="${libs.javax.servlet.classpath}"/>
<path path="${javac.classpath}"/>
<pathelement location="classes"/>
<pathelement location="${jboss.home}/lib/commons-logging.jar"/>
</classpath>
</javac>
</target>
<target name="merge-web.xml">
<xslt basedir="." in="${web.docbase.dir}/WEB-INF/web.xml"
out="${build.web.dir}/WEB-INF/web.xml"
style="src/xsl/webxml-merge.xsl" force="true"><!-- force="${xsl.struts.force}"-->
<param name="file" expression="${basedir}/${build.generated.dir}/etc/web.xml"/>
</xslt>
</target>
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3) put following webxml-merge.xsl to src/xsl inside your war module
================
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" xmlns:webapp="http://java.sun.com/xml/ns/j2ee" >
<xsl:namespace-alias stylesheet-prefix="webapp" result-prefix="#default" />
<xsl:output method="xml" version="1.0" omit-xml-declaration="no" indent="yes"/>
<xsl:param name="file"/>
<xsl:template match="/" >
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<xsl:copy-of select="webapp:web-app/webapp:servlet"/>
<xsl:copy-of select="document($file)/web-app/servlet"/>
<xsl:copy-of select="webapp:web-app/webapp:servlet-mapping"/>
<xsl:copy-of select="document($file)/web-app/servlet-mapping"/>
<xsl:copy-of select="webapp:web-app/webapp:session-config"/>
<xsl:copy-of select="webapp:web-app/webapp:welcome-file-list"/>
<xsl:copy-of select="webapp:web-app/webapp:jsp-config"/>
</web-app>
</xsl:template>
</xsl:stylesheet>
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