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我收到以下异常：

java.lang.UnsupportedClassVersionError: net/sourceforge/barbecue/BarcodeException : **Unsupported major.minor version 0.0**
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
    at pl.wroc.pwr.judy2.master.TestClassLoader.loadClass(TestClassLoader.java:51)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
    at java.lang.Class.getConstructor0(Class.java:2699)
    at java.lang.Class.getConstructor(Class.java:1657)
    at junit.framework.TestSuite.getTestConstructor(TestSuite.java:83)
    at junit.framework.TestSuite.<init>(TestSuite.java:131)
    at org.junit.internal.runners.JUnit38ClassRunner.<init>(JUnit38ClassRunner.java:67)
    at org.junit.internal.builders.JUnit3Builder.runnerForClass(JUnit3Builder.java:14)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
    at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
    at junit.framework.JUnit4TestAdapter.<init>(JUnit4TestAdapter.java:31)
    at junit.framework.JUnit4TestAdapter.<init>(JUnit4TestAdapter.java:24)
    at pl.wroc.pwr.judy2.util.JUnitTestRunner.runTest(JUnitTestRunner.java:26)

尝试使用以下源代码检测某些字节码时。（准确地说，当我尝试执行修改后的字节码时出现此异常）

 public byte[] instrument(byte[] bytecode)
        {

        ClassReader cr = new ClassReader(bytecode);
        ClassWriter cw = new ClassWriter(cr, 0);

        // create new class adapter
        AbstractInstrumentClassAdapter ca = new InstrumentClassAdapterTracer(cw, tracer);
        // System.out.println("----------------------------------- Daikon start");
        cr.accept(ca, 0);

        ClassReader cr2 = new ClassReader(cw.toByteArray());
        ClassWriter cw2 = new ClassWriter(cr2, 0);
        ClassAdapter checker = new CheckClassAdapter(cw);
        AbstractInstrumentClassAdapter ca2 = new InstrumentClassAdapterInstrumenter(checker);

        cr2.accept(checker, 0);
        return cw2.toByteArray();
    }

我认为这可能是我的 InstrumentClassAdapterInstrumenter 实现，所以我把它省略了，我现在只使用 CheckClassAdapter。谁能看到我做错了什么？

干杯，

4

1 回答 1

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大声笑，最后我在这里问了一些问题，这似乎是简单的打字错误，应该是

 ClassWriter cw2 = new ClassWriter(cr2, 0);
 ClassAdapter checker = new CheckClassAdapter(cw2);

不是

 ClassWriter cw2 = new ClassWriter(cr2, 0);
 ClassAdapter checker = new CheckClassAdapter(cw);
于 2009-12-01T13:58:24.260 回答