java.lang.RuntimeException : java. lang.ClassNotFoundException :

Question

我得到以下新的异常 cobertura (2.0.2..) .我想这与在新 block 中立即创建新对象有某种关系。

WARN   instrumentClass, Unable to instrument file c:\apps\ijprojects\TrickyInstrument\out\production\TrickyInstrument\InstrumentationFailsOnFirstNewClassInTryBlock.class
java.lang.RuntimeException: java.lang.ClassNotFoundException: DataAccess
        at org.objectweb.asm.ClassWriter.getCommonSuperClass(Unknown Source)
        at org.objectweb.asm.ClassWriter.a(Unknown Source)
        at org.objectweb.asm.Frame.a(Unknown Source)
        at org.objectweb.asm.Frame.a(Unknown Source)
        at org.objectweb.asm.MethodWriter.visitMaxs(Unknown Source)
        at org.objectweb.asm.MethodVisitor.visitMaxs(Unknown Source)
        at org.objectweb.asm.util.CheckMethodAdapter.visitMaxs(Unknown Source)
        at org.objectweb.asm.MethodVisitor.visitMaxs(Unknown Source)
        at org.objectweb.asm.commons.LocalVariablesSorter.visitMaxs(Unknown Source)
        at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
        at org.objectweb.asm.util.CheckMethodAdapter$1.visitEnd(Unknown Source)
        at org.objectweb.asm.MethodVisitor.visitEnd(Unknown Source)
        at org.objectweb.asm.util.CheckMethodAdapter.visitEnd(Unknown Source)
        at org.objectweb.asm.ClassReader.b(Unknown Source)
        at org.objectweb.asm.ClassReader.accept(Unknown Source)
        at org.objectweb.asm.ClassReader.accept(Unknown Source)
        at net.sourceforge.cobertura.instrument.CoberturaInstrumenter.instrumentClass(CoberturaInstrumenter.java:204)
        at net.sourceforge.cobertura.instrument.CoberturaInstrumenter.instrumentClass(CoberturaInstrumenter.java:121)
        at net.sourceforge.cobertura.instrument.CoberturaInstrumenter.addInstrumentationToSingleClass(CoberturaInstrumenter.java:233)
        at net.sourceforge.cobertura.instrument.Main.addInstrumentationToSingleClass(Main.java:274)
        at net.sourceforge.cobertura.instrument.Main.addInstrumentation(Main.java:283)
        at net.sourceforge.cobertura.instrument.Main.addInstrumentation(Main.java:292)
        at net.sourceforge.cobertura.instrument.Main.parseArguments(Main.java:373)
        at net.sourceforge.cobertura.instrument.Main.main(Main.java:395)
8 Jul, 2013 2:05:07 PM net.sourceforge.cobertura.coveragedata.CoverageDataFileHandler saveCoverageData
INFO: Cobertura: Saved information on 2 classes.

以下是与上述异常相关的代码。

public class InstrumentationFailsOnFirstNewClassInTryBlock {


    public void saveToDatabase() {
        //
        try {
//            boolean b=false;
//            if ( b) {
//                System.out.println("no action");
//            }
            DataAccess da = new DataAccess();
            System.out.println("nothing");

        } catch (Exception e) {


        }
    }
}
  class DataAccess {
    public DataAccess() {
        //To change body of created methods use File | Settings | File Templates.
    }
}

如果我取消注释代码块中的一些伪语句，那么检测工作正常。有人看过这个吗？任何潜在的修复？

编辑:java6 和 java7 出现错误。

Answer 1

最初的问题是由于 Cobertura 缺陷造成的。它不是固定的。 Cobertura 现在支持 auxillary classpath. 的附加参数.这将用于解析检测所需的任何类。

cobertura-ant task documentation

Adding auxClasspath

auxClasspath argument is designed to remove the ClassNotFoundException during instrumentation. See https://github.com/cobertura/cobertura/wiki/FAQ#classnotfoundexception-during-instrumentation for more information on this argument