我正在尝试通过使用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，显示了2个导入选项(javax.security.auth.x500.X500Principal，com.sun.security.auth.X500Principal)。我仍然使用了正确的导入它正在显示以下错误。另外，另一个导入也不推荐使用。
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
最佳答案
发现它通过使用@PowerMockIgnore({"java.net.ssl", "javax.security.auth.x500.X500Principal"})在PowerMockRunner本身中运行。我做错的事情是我只忽略了X500Principal。
而且它与MockitoJunitRunner一起正常工作，没有任何错误。
关于java - 尝试在junit中模拟X500Principal时出现LinkageError，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/37725503/