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Posted to users@tomcat.apache.org by simon colston <si...@idealnet.co.jp> on 2004/06/30 08:21:34 UTC
Errors in precompiled JSPs
I have set up an ant task to precompile JSPs and everything works fine
*if* there are no errors in the JSP.
The ant task is:
<target name="jspc" depends="prepare" description="Compile JSP files">
<taskdef classname="org.apache.jasper.JspC" name="jasper2" >
<classpath id="jspc.classpath">
<pathelement location="${java.home}/../lib/tools.jar"/>
<fileset dir="${extlib.home}">
<include name="**/*.jar"/>
</fileset>
</classpath>
</taskdef>
<jasper2 verbose="4"
validateXml="false"
uriroot="${build.home}"
webXmlFragment="${web.home}/WEB-INF/generated_web.xml"
outputDir="${build.home}/WEB-INF/src" />
<loadfile
srcfile="${web.home}/WEB-INF/generated_web.xml"
property="gen.web.xml">
<filterchain >
<tokenfilter delimoutput="\r\n"/>
</filterchain>
</loadfile>
<delete file="${web.home}/WEB-INF/generated_web.xml"></delete>
<delete file="${build.home}/WEB-INF/web.xml"></delete>
<copy tofile="${build.home}/WEB-INF/web.xml"
file="${web.home}/WEB-INF/web.xml">
<filterset>
<filter value="${gen.web.xml}" token="jspServlets"/>
</filterset>
</copy>
</target>
If I introduce an error into the JSP page, such as:
<c:url var="url"/>
<img src="${url}"/>
(where c: is the JSTL common taglib) the ant task ends without errors
and I get a NullPointerException when I test the page on the server.
How can I get my jspc ant task to show errors in the JSP?
Using Tomcat 5.0.25.
Cheers,
Simon
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Re: Errors in precompiled JSPs
Posted by simon colston <si...@idealnet.co.jp>.
Hello Woodchuck,
Thanks for the reply.
Woodchuck wrote:
>
> <jspc srcdir="${webapp.build}" destdir="gensrc/src"
> uriroot="${webapp.build}"
> compiler="jasper41"
> includes="index.jsp,jsp/**/*.jsp"
> verbose="9"
> webxml="jspmaps">
>
> <classpath>
> <pathelement path="${tomcat.home}/common/lib/jasper-compiler.jar"/>
> <pathelement path="${tomcat.home}/common/lib/servlet.jar"/>
> <pathelement path="${tomcat.home}/common/lib/jasper-runtime.jar"/>
> <pathelement path="${ant.home}/lib/ant.jar"/>
> </classpath>
>
> </jspc>
I gave this a try and got:
[jasperc] org.apache.jasper.JasperException: Unrecognized option:
-v9. Use -help for help.
I think this may be because I am using Tomcat 5 and the jasper compiler
is different. I tried "japser", "jasper41", "jasper5" and "jasper50"
for the compiler option but it only recognised the first two, and they
both gave me the -v9 exception (related to the verbosity attribute).
The manual page for the jspc task,
http://ant.apache.org/manual/OptionalTasks/jspc.html
seems very old and seems to have been written in March 2003. It also
has warnings everywhere that this should just be used for validation and
not for pre-compiling. It doesn't look like it has been updated for
Tomcat 5 comptatibility.
>
> why do you need to define your own pre-compile task may i ask?
>
I read the manual ;-)
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jasper-howto.html
Am I messing up somewhere here? And is there anyway to get the jasper
shipped with Tomcat 5 to display errors when used for pre-compiling?
Cheers,
simon
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Re: Errors in precompiled JSPs
Posted by Woodchuck <wo...@yahoo.com>.
hi simon,
i just tried to introduce the same 'errors' you did and my
pre-compiling stopped and complained the following exception:
[jasperc] 2004-06-30 10:38:20 - ERROR-the file '\jsp\Test.jsp'
generated the following general exception: java.
lang.NullPointerException
[jasperc] at org.apache.jasper.JspC.processFile(JspC.java:596)
[jasperc] at org.apache.jasper.JspC.execute(JspC.java:801)
[jasperc] at org.apache.jasper.JspC.main(JspC.java:823)
so it seems i'm getting the error-checking that you want. the
difference is that i didn't use <taskdef> to do my pre-compiling. i
just used ant's <jspc> task:
<jspc srcdir="${webapp.build}" destdir="gensrc/src"
uriroot="${webapp.build}"
compiler="jasper41"
includes="index.jsp,jsp/**/*.jsp"
verbose="9"
webxml="jspmaps">
<classpath>
<pathelement path="${tomcat.home}/common/lib/jasper-compiler.jar"/>
<pathelement path="${tomcat.home}/common/lib/servlet.jar"/>
<pathelement path="${tomcat.home}/common/lib/jasper-runtime.jar"/>
<pathelement path="${ant.home}/lib/ant.jar"/>
</classpath>
</jspc>
why do you need to define your own pre-compile task may i ask?
woodchuck
--- simon colston <si...@idealnet.co.jp> wrote:
> I have set up an ant task to precompile JSPs and everything works
> fine
> *if* there are no errors in the JSP.
>
> The ant task is:
>
> <target name="jspc" depends="prepare" description="Compile JSP
> files">
> <taskdef classname="org.apache.jasper.JspC" name="jasper2" >
> <classpath id="jspc.classpath">
> <pathelement location="${java.home}/../lib/tools.jar"/>
> <fileset dir="${extlib.home}">
> <include name="**/*.jar"/>
> </fileset>
> </classpath>
> </taskdef>
> <jasper2 verbose="4"
> validateXml="false"
> uriroot="${build.home}"
> webXmlFragment="${web.home}/WEB-INF/generated_web.xml"
> outputDir="${build.home}/WEB-INF/src" />
> <loadfile
> srcfile="${web.home}/WEB-INF/generated_web.xml"
> property="gen.web.xml">
> <filterchain >
> <tokenfilter delimoutput="\r\n"/>
> </filterchain>
> </loadfile>
> <delete file="${web.home}/WEB-INF/generated_web.xml"></delete>
> <delete file="${build.home}/WEB-INF/web.xml"></delete>
> <copy tofile="${build.home}/WEB-INF/web.xml"
> file="${web.home}/WEB-INF/web.xml">
> <filterset>
> <filter value="${gen.web.xml}" token="jspServlets"/>
> </filterset>
> </copy>
> </target>
>
> If I introduce an error into the JSP page, such as:
>
> <c:url var="url"/>
> <img src="${url}"/>
>
> (where c: is the JSTL common taglib) the ant task ends without errors
>
> and I get a NullPointerException when I test the page on the server.
>
> How can I get my jspc ant task to show errors in the JSP?
>
> Using Tomcat 5.0.25.
>
> Cheers,
>
> Simon
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tomcat-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tomcat-user-help@jakarta.apache.org
>
>
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