这是什么错呀?java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.basjava.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.base.impl.BuyerServiceBeanat com.wen.service.UserServiceTest.setUpBeforeClass(UserSe

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这是什么错呀?java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.basjava.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.base.impl.BuyerServiceBeanat com.wen.service.UserServiceTest.setUpBeforeClass(UserSe
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这是什么错呀?java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.basjava.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.base.impl.BuyerServiceBeanat com.wen.service.UserServiceTest.setUpBeforeClass(UserSe
这是什么错呀?java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.bas
java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.base.impl.BuyerServiceBean
at com.wen.service.UserServiceTest.setUpBeforeClass(UserServiceTest.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

这是什么错呀?java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.basjava.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.base.impl.BuyerServiceBeanat com.wen.service.UserServiceTest.setUpBeforeClass(UserSe
你在UserServiceTest.java:21行转换BuyerServiceBean类时出错,应该是你定义的接口比如
ITestSerivce it = new BuyerServiceBean();这种情况报错,因为BuyerServiceBean不是ITestSerivce的实现类,或者其它类转换错误?

java.lang.IllegalStateException是什么? java.lang.ClassCastException:android.widget.Button是什么错? 这是什么错呀?java.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.basjava.lang.ClassCastException:$Proxy14 cannot be cast to com.wen.service.base.impl.BuyerServiceBeanat com.wen.service.UserServiceTest.setUpBeforeClass(UserSe 求问java.lang.IllegalStateException是什么? 问问大虾们这是什么错啊 Caused by:java.lang.ClassCastException:android.view.AbsSavedState$1Caused by:java.lang.ClassCastException:android.view.AbsSavedState$1 cannot be cast to android.widget.CompoundButton$SavedState java.lang.ClassCastException:android.widget.ExpandableListViewExpandableListContextMenuInfo求高手解答这是什么错误,怎么解决 CLA是什么 ClA是什么 java.lang.IllegalStateException是什么回事?我这几天运行程序的时候总是出现以下运行结果,java.lang.IllegalStateExceptionorg.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:423)org.apache.jsp.chklogon_js java.lang.illegalstateexception java.lang.InstantiationException是什么意思 java.lang.IllegalArgumentException是什么意思 Java.lang.outofmemovyerror是什么意思 java.lang.NoSuchMethodError:getViewUnit java.lang.NoSuchMethodException是什么意思 java.lang.IllegalStateException:getOutputStream() has already been called for this response这是什么错误?源代码：生成验证码 private java.lang.String name;这是在定义什么? java.lang.Error:Unresolved compilation problems 这是什么问题,怎么改正?java.lang.Error:Unresolved compilation problems:The import org.wltea cannot be resolved The import org.wltea cannot be resolved IKSegmenter cannot be resolved to a type I