java.lang.reflect.UndeclaredThrowableException at?com.sun.proxy.$Proxy5.createQuery(Unknown?Source) at?com.cwh.service.impl.UsersDAOImpl.usersLogin(UsersDAOImpl.java:26) at?service.impl.TestUsersDAOImpl.testUsersLogin(TestUsersDAOImpl.java:17) at?sun.reflect.NativeMethodAccessorImpl.invoke0(Native?Method) at?sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at?sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at?java.lang.reflect.Method.invoke(Method.java:606) at?org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at?org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at?org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at?org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at?org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at?org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at?org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at?org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at?org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at?org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at?org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at?org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at?org.junit.runners.ParentRunner.run(ParentRunner.java:309) at?org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at?org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at?org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at?org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at?org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at?org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused?by:?java.lang.reflect.InvocationTargetException at?sun.reflect.NativeMethodAccessorImpl.invoke0(Native?Method) at?sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at?sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at?java.lang.reflect.Method.invoke(Method.java:606) at?org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:352) ...?26?moreUsersDAOImpl.java:26 :?Query query = session.createQuery(hql);hql語句是hql = " from Users where username=? and password=? ";什么原因？？？代碼和老師的是一樣的啊