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                        /后端开发
                        
                            /Java
                        
                        /Hibernate初探之单表映射

hbm.xml问题

org.hibernate.InvalidMappingException: Could not parse mapping document from resource hibernate/Students.hbm.xml

at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3507)

at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3496)

at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3484)

at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1376)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1777)

at hibernate.Student_Test.init(Student_Test.java:60)

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:45)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)

at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

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: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping Students

at org.hibernate.cfg.Configuration$MappingsImpl.addClass(Configuration.java:2659)

at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:175)

at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:3504)

... 29 more

java.lang.NullPointerException

at hibernate.Student_Test.distory(Student_Test.java:74)