https://issues.apache.org/bugzilla/show_bug.cgi?id=53541
Priority: P2
Bug ID: 53541
Assignee: [email protected]
Summary: Bug in virtual webapp feature. Custom tags badly
supported.
Severity: major
Classification: Unclassified
Reporter: [email protected]
Hardware: PC
Status: NEW
Version: 7.0.28
Component: Catalina
Product: Tomcat 7
Defect report - briefly:
Tomcat implements “virtual webapp” feature. For details, see
http://tomcat.apache.org/tomcat-7.0-doc/config/context.html#Virtual_webapp
Tomcat 7.0.28 implementation of “virtual webapp” has a defect – it does not
allow developer to use tag library from WEB-INF/lib/*.jar. For example,
developer can’t put well known jstl-1.2.jar into WEB-INF/lib/ and use it.
Defect report – detailed:
Proof of concept web application -
lite-filter-mdot-1.0.0-BUILD-SNAPSHOT-sources.jar. Really, it’s a sample web
app downloaded from Spring Source. You can download it from
https://github.com/SpringSource/spring-mobile-samples. I just changed POM a
little bit to remove redundant samples.
Error screenshot – error.png
Zipped tomcat CONF directory – defect-conf.zip
======From Spring.xml========
<Context path="/spring"
docBase="C:/Users/Filipp_Zuev/workspace/lite-filter-mdot/src/main/webapp" >
<Resources className="org.apache.naming.resources.VirtualDirContext"
extraResourcePaths=
"/WEB-INF/classes=C:/Users/Filipp_Zuev/workspace/lite-filter-mdot/target/classes,/WEB-INF/lib=C:/Users/Filipp_Zuev/workspace/lite-filter-mdot/target/lite-filter-mdot-1.0.0-BUILD-SNAPSHOT/WEB-INF/lib"
/>
<Loader className="org.apache.catalina.loader.VirtualWebappLoader"
virtualClasspath="C:/Users/Filipp_Zuev/workspace/lite-filter-mdot/target/classes;
C:/Users/Filipp_Zuev/workspace/lite-filter-mdot/target/lite-filter-mdot-1.0.0-BUILD-SNAPSHOT/WEB-INF/lib/*.jar"
/>
<JarScanner scanAllDirectories="true" />
</Context>
=============
Tomcat log file - catalina.2012-07-12.log
Defect–fix suggested:
Add this method to org.apache.naming.resources.VirtualDirContext
@Override
protected String doGetRealPath(String path) {
File file = file(path);
if(null!=file){
return file.getAbsolutePath();
}else{
return null;
}
}
Defect–fix suggested-proof of concept:
1. Deploy attached tomcat-extension-0.0.1-SNAPSHOT.jar with
me.tomcat.bugfix.workaround.VirtualDirContext.class into Tomcat’s common lib
directory.
2. In the Context configuration for the proof of concept application replace
org.apache.naming.resources.VirtualDirContext for
me.tomcat.bugfix.workaround.VirtualDirContext
3. Restart tomcat.
Defect fixed!
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