Cobertura ant script is missing Log4J classes

问题:

I tried to get Cobertura running inside my ant script, but I'm stuck right at the beginning. When I try to insert the cobertura taskdef I'm missing the Log4J libraries.

Ant properties & classpath

<property name="cobertura.dir" location="/full/path/to/cobertura-1.9.3" />
<path id="cobertura.classpath">
    <fileset dir="${cobertura.dir}">
        <include name="cobertura.jar" />
        <include name="lib/**/*.jar" />
    </fileset>
</path>
<taskdef classpathref="cobertura.classpath" resource="tasks.properties" />

My ant target

<!-- ================================= 
      target: cobertura              
     ================================= -->
<target name="cobertura" depends="clean, init" description="Generates cobertura coverage reports">
    <cobertura-instrument todir="${dir.build.instrumented}">
        <fileset dir="${dir.build}">
            <include name="**/*.class" />
        </fileset>
    </cobertura-instrument>
</target>

I think I did everything like it is described in the Cobertura documentation but I get this

Ant build error

BUILD FAILED
build.xml:95: java.lang.NoClassDefFoundError: org/apache/log4j/Logger

Inside the ${cobertura.dir} there is the lib directory with all files. I unzipped it from the cobertura distribution ZIP directly into that directory.

Am I missing a step? Something wrong with my configuration so far?

回答1:

I also encountered this problem today and solved it by specifying the location of all the required libraries as part of the class path provided to my taskDef task.

<path id="cobertura.class.path">
    <pathelement location="${common.dir}/../tools/cobertura/cobertura.jar" />
    <pathelement location="${common.dir}/../tools/cobertura/lib/asm-3.0.jar" />
    <pathelement location="${common.dir}/../tools/cobertura/lib/asm-tree-3.0.jar" />
    <pathelement location="${common.dir}/../tools/cobertura/lib/log4j-1.2.9.jar" />
    <pathelement location="${common.dir}/../tools/cobertura/lib/jakarta-oro-2.0.8.jar" />
</path>

<taskdef classpathref="cobertura.class.path" resource="tasks.properties" />

回答2:

Go to your ant/lib dir and make sure there is NO file cobertura.jar there. If it's there - remove it and try again.

回答3:

Change this

<include name="lib/**/*.jar" />

to

<include name="*.jar" />

Hope this helps!

回答4:

I just upgraded to the latest cobertura and mine works fine. Is it possible that something else is on the CLASSPATH with a different version of log4j so it is picking up wrong one?

回答5:

Make sure that classpath used in taskdef and cobertura-instrument are the same. This helped me with the same issue.

回答6:

I too faced this problem, I just added all jars given with cobertura in the classpath to resolve this issue