JaCoCo report problem

[Helko Glathe]

Hello,

I adapted the ReportGenerator example to use JaCoCo code coverage report without Maven etc. in plain Java.
http://eclemma.org/jacoco/trunk/coverage/org.jacoco.examples/org.jacoco.examples/ReportGenerator.java.html

For the classes/bin option I referenced a folder where underneath all plugins and classes folders are located to run the product we have. Lots of them are from org.eclipse or org.apache.

For some of those 3rd party jar libs I get such problems when running the JaCoCo analyzer:
Let's go with the JaCoCo integration test code coverage report!
3 JaCoCo exec files found.
Exception in thread "main" java.io.IOException: Error while analyzing class C:\Standalone\Workspace\products\plugins\org.apache.xmlbeans_2.3.0.v201405241900.jar@javax/xml/namespace/QName.class.
    at org.jacoco.core.analysis.Analyzer.analyzerError(Analyzer.java:150)
    at org.jacoco.core.analysis.Analyzer.analyzeClass(Analyzer.java:144)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:175)
    at org.jacoco.core.analysis.Analyzer.analyzeZip(Analyzer.java:246)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:178)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:208)
    at org.jacoco.core.analysis.Analyzer.analyzeAll(Analyzer.java:203)
    at jacocoreporter.ReportGenerator.analyzeStructure(ReportGenerator.java:142)
    at jacocoreporter.ReportGenerator.create(ReportGenerator.java:98)
    at jacocoreporter.ReportGenerator.main(ReportGenerator.java:163)
Caused by: java.lang.IllegalStateException: Can't add different class with same name: javax/xml/namespace/QName
    at org.jacoco.core.analysis.CoverageBuilder.visitCoverage(CoverageBuilder.java:106)
    at org.jacoco.core.analysis.Analyzer$1.visitEnd(Analyzer.java:92)
    at org.jacoco.asm.ClassVisitor.visitEnd(ClassVisitor.java:317)
    at org.jacoco.core.internal.flow.ClassProbesAdapter.visitEnd(ClassProbesAdapter.java:98)
    at org.jacoco.asm.ClassReader.accept(ClassReader.java:697)
    at org.jacoco.asm.ClassReader.accept(ClassReader.java:506)
    at org.jacoco.core.analysis.Analyzer.analyzeClass(Analyzer.java:107)
    at org.jacoco.core.analysis.Analyzer.analyzeClass(Analyzer.java:142)
    ... 8 more

when I remove those problematic jar lib files from the folder the analyzer runs without problems.
Is there an option to ignore certain jar libs or does anybody have an idea how else I can solve this problem?

Thanks in advance and kind regards.

Helko

[Marc R. Hoffmann]

Hi Helko,

the provided example is very simple and considers all JARs under a certain directory. You may traverse and filter your JAR files (e.g. only application JARs) and feed them to the Analyzer.

Regards,
-marc

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