当试图在junit中模拟X500Principal时出现LinkageError

我想通过使用PowerMockRunner模拟java.security.cert.X509Certificate，javax.security.auth.x500.X500Principal来编写测试用例。当我尝试导入X500Principal IDE的类时，显示2个导入选项（javax.security.auth.x500.X500Principal，com.sun.security.auth.X500Principal）。我仍然使用正确的导入它显示以下错误。另一个导入也被弃用。当试图在junit中模拟X500Principal时出现LinkageError

Exception in thread "main" java.lang.LinkageError: loader constraint violation: when resolving overridden method "$java.security.cert.X509Certificate$$EnhancerByMockitoWithCGLIB$$887d20cf.getSubjectX500Principal()Ljavax/security/auth/x500/X500Principal;" the class loader (instance of org/powermock/core/classloader/MockClassLoader) of the current class, $java/security/cert/X509Certificate$$EnhancerByMockitoWithCGLIB$$887d20cf, and its superclass loader (instance of <bootloader>), have different Class objects for the type javax/security/auth/x500/X500Principal used in the signature 
    at sun.reflect.GeneratedSerializationConstructorAccessor13.newInstance(Unknown Source) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:408) 
    at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator.java:40) 
    at org.objenesis.ObjenesisBase.newInstance(ObjenesisBase.java:59) 
    at org.mockito.internal.creation.jmock.ClassImposterizer.createProxy(ClassImposterizer.java:128) 
    at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:63) 
    at org.powermock.api.mockito.internal.mockcreation.MockCreator.createMethodInvocationControl(MockCreator.java:109) 
    at org.powermock.api.mockito.internal.mockcreation.MockCreator.mock(MockCreator.java:57) 
    at org.powermock.api.mockito.PowerMockito.mock(PowerMockito.java:203) 
    at org.powermock.api.extension.listener.AnnotationEnabler.standardInject(AnnotationEnabler.java:106) 
    at org.powermock.api.extension.listener.AnnotationEnabler.beforeTestMethod(AnnotationEnabler.java:54) 
    at org.powermock.tests.utils.impl.PowerMockTestNotifierImpl.notifyBeforeTestMethod(PowerMockTestNotifierImpl.java:90) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:292) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:127) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:282) 
    at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87) 
    at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:207) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:146) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:120) 
    at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34) 
    at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44) 
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:122) 
    at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:106) 
    at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53) 
    at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59) 
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137) 
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78) 
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212) 
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:483) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) 

Process finished with exit code 1

来源

2016-06-09 Kgn

查看导致此异常的Java代码将会很有帮助。然而，根本问题是，两个不同的类加载器加载了相同的类（'javax/security/auth/x500/X500Principal'），如错误消息所述，它与Mockito的工作方式有关（I' Mock不是特别熟练，但是） –

通过使用@PowerMockIgnore({"java.net.ssl", "javax.security.auth.x500.X500Principal"})发现它在PowerMockRunner本身中工作。我做错了的事情是我只忽略了X500Principal。

此外它工作正常与MockitoJunitRunner无任何错误。

来源

2016-06-16 07:18:58 Kgn

我得到了同样的错误。用@PowerMockIgnore（“javax.security.auth.x500.X500Principal”）注释我的测试类为我工作 – user674669

当试图在junit中模拟X500Principal时出现LinkageError

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