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Posted to user@geronimo.apache.org by Łukasz Budnik <lu...@gmail.com> on 2008/04/05 15:24:37 UTC
[Solution] Ant and pre-compiled JSPs
Hi All,
If you use Ant to build your project you can use described below
solution to pre-compile JSPs.
It's extremely useful when you use complex JSP pages, for example
pages with MyFaces + Tomahawk + Tomahawk Sandbox load much faster!
First of all, you cannot use standard JspC task as described here:
http://tomcat.apache.org/tomcat-6.0-doc/api/org/apache/jasper/JspC.html
You need to set
org.apache.jasper.Constants.USE_INSTANCE_MANAGER_FOR_TAGS to true
which is simply impossible at the taskdef level.
In order to set this property and pass it to some other Java class you
need to use <java> task with nested <sysproperty>.
First of all the classpath:
<path id="jspc-classpath">
<!-- taglib jsp core -->
<pathelement
location="${GERONIMO_HOME}\repository\jstl\jstl\1.2\jstl-1.2.jar" />
<!-- taglib jsf core and html -->
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\myfaces\core\myfaces-impl\1.2.2\myfaces-impl-1.2.2.jar"/>
<!-- taglib tomahawk -->
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\myfaces\tomahawk\tomahawk\1.1.7-SNAPSHOT\tomahawk-1.1.7-SNAPSHOT.jar"
/>
<!-- taglib tomahawk sandbox -->
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\myfaces\tomahawk\tomahawk-sandbox\1.1.7-SNAPSHOT\tomahawk-sandbox-1.1.7-SNAPSHOT.jar"
/>
<!-- Geronimo's jasper -->
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\tomcat\jasper\6.0.14-G614585\jasper-6.0.14-G614585.jar"
/>
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\tomcat\jasper-el\6.0.14\jasper-el-6.0.14.jar"
/>
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\geronimo\specs\geronimo-jsp_2.1_spec\1.0.1\geronimo-jsp_2.1_spec-1.0.1.jar"
/>
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\geronimo\specs\geronimo-el_1.0_spec\1.0.1\geronimo-el_1.0_spec-1.0.1.jar"
/>
<!-- required by Jasper -->
<pathelement
location="${GERONIMO_HOME}\repository\org\apache\tomcat\juli\6.0.14\juli-6.0.14.jar"
/>
<!-- if your web app uses some other libs, add it here -->
<path refid="web-classpath" />
<!-- JspC is also implemented as Ant Task - it needs Ant lib
when run as a Java class -->
<pathelement location="${ant.home}\lib\ant.jar "/>
</path>
Now, use this target to compile JSP to servlets:
<target name="jspc">
<!-- must use fork! otherwise there will be ClasCastException -
AntClassLoader cannot be casted to URLClassLoader! -->
<java classname="org.apache.jasper.JspC" fork="true">
<classpath refid="jspc-classpath"/>
<!-- the key feature ;) -->
<sysproperty
key="org.apache.jasper.Constants.USE_INSTANCE_MANAGER_FOR_TAGS"
value="true"/>
<arg value="-p"/>
<arg value="org.xh.nuntius.web.jsps"/>
<arg value="-webapp"/>
<arg value="${web-build}/classes"/>
<arg value="-webinc"/>
<arg value="${web-build}/classes/WEB-INF/generated_web.xml"/>
<arg value="-d"/>
<arg value="${web-build}/classes/WEB-INF/src"/>
<arg value="-source"/>
<arg value="1.5"/>
<arg value="-target"/>
<arg value="1.5"/>
<arg value="-s"/>
</java>
</target>
Now compile generated servlets to byte codes:
<target name="jspc-compile" depends="jspc">
<javac srcdir="${web-build}/classes/WEB-INF/src"
destdir="${web-build}/classes/WEB-INF/classes"
classpathref="jspc-classpath" encoding="UTF-8" />
</target>
Note that before packaging your application the generated_web.xml must
be merged with your original web.xml.
And my suggestion:
If Geronimo team is using very own, enhanced Jasper version why not
assume that USE_INSTANCE_MANAGER_FOR_TAGS is always set to true?
It would be much easier for us all ;)
best regards
Łukasz
Re: [Solution] Ant and pre-compiled JSPs
Posted by Kevan Miller <ke...@gmail.com>.
On Apr 5, 2008, at 9:24 AM, Łukasz Budnik wrote:
> Hi All,
>
> If you use Ant to build your project you can use described below
> solution to pre-compile JSPs.
>
> It's extremely useful when you use complex JSP pages, for example
> pages with MyFaces + Tomahawk + Tomahawk Sandbox load much faster!
>
> First of all, you cannot use standard JspC task as described here:
> http://tomcat.apache.org/tomcat-6.0-doc/api/org/apache/jasper/
> JspC.html
>
> You need to set
> org.apache.jasper.Constants.USE_INSTANCE_MANAGER_FOR_TAGS to true
> which is simply impossible at the taskdef level.
>
> In order to set this property and pass it to some other Java class you
> need to use <java> task with nested <sysproperty>.
>
> First of all the classpath:
>
> <path id="jspc-classpath">
> <!-- taglib jsp core -->
> <pathelement
> location="${GERONIMO_HOME}\repository\jstl\jstl\1.2\jstl-1.2.jar" />
> <!-- taglib jsf core and html -->
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\myfaces\core
> \myfaces-impl\1.2.2\myfaces-impl-1.2.2.jar"/>
> <!-- taglib tomahawk -->
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\myfaces\tomahawk
> \tomahawk\1.1.7-SNAPSHOT\tomahawk-1.1.7-SNAPSHOT.jar"
> />
> <!-- taglib tomahawk sandbox -->
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\myfaces\tomahawk
> \tomahawk-sandbox\1.1.7-SNAPSHOT\tomahawk-sandbox-1.1.7-SNAPSHOT.jar"
> />
> <!-- Geronimo's jasper -->
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\tomcat\jasper
> \6.0.14-G614585\jasper-6.0.14-G614585.jar"
> />
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\tomcat\jasper-el
> \6.0.14\jasper-el-6.0.14.jar"
> />
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\geronimo\specs
> \geronimo-jsp_2.1_spec\1.0.1\geronimo-jsp_2.1_spec-1.0.1.jar"
> />
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\geronimo\specs
> \geronimo-el_1.0_spec\1.0.1\geronimo-el_1.0_spec-1.0.1.jar"
> />
> <!-- required by Jasper -->
> <pathelement
> location="${GERONIMO_HOME}\repository\org\apache\tomcat\juli
> \6.0.14\juli-6.0.14.jar"
> />
> <!-- if your web app uses some other libs, add it here -->
> <path refid="web-classpath" />
> <!-- JspC is also implemented as Ant Task - it needs Ant lib
> when run as a Java class -->
> <pathelement location="${ant.home}\lib\ant.jar "/>
> </path>
>
> Now, use this target to compile JSP to servlets:
>
> <target name="jspc">
> <!-- must use fork! otherwise there will be ClasCastException -
> AntClassLoader cannot be casted to URLClassLoader! -->
> <java classname="org.apache.jasper.JspC" fork="true">
> <classpath refid="jspc-classpath"/>
> <!-- the key feature ;) -->
> <sysproperty
> key="org.apache.jasper.Constants.USE_INSTANCE_MANAGER_FOR_TAGS"
> value="true"/>
> <arg value="-p"/>
> <arg value="org.xh.nuntius.web.jsps"/>
> <arg value="-webapp"/>
> <arg value="${web-build}/classes"/>
> <arg value="-webinc"/>
> <arg value="${web-build}/classes/WEB-INF/generated_web.xml"/>
> <arg value="-d"/>
> <arg value="${web-build}/classes/WEB-INF/src"/>
> <arg value="-source"/>
> <arg value="1.5"/>
> <arg value="-target"/>
> <arg value="1.5"/>
> <arg value="-s"/>
> </java>
> </target>
>
> Now compile generated servlets to byte codes:
>
> <target name="jspc-compile" depends="jspc">
> <javac srcdir="${web-build}/classes/WEB-INF/src"
> destdir="${web-build}/classes/WEB-INF/classes"
> classpathref="jspc-classpath" encoding="UTF-8" />
> </target>
>
> Note that before packaging your application the generated_web.xml must
> be merged with your original web.xml.
>
> And my suggestion:
>
> If Geronimo team is using very own, enhanced Jasper version why not
> assume that USE_INSTANCE_MANAGER_FOR_TAGS is always set to true?
>
> It would be much easier for us all ;)
Thanks Lukasz! Agreed we should make this easier...
--kevan