org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.compon

最新推荐文章于 2018-05-16 13:39:35 发布

notsaltedfish

最新推荐文章于 2018-05-16 13:39:35 发布

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分类专栏： The life of program 文章标签： hibernate

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当遇到org.hibernate.HibernateException: Unable to instantiate default tuplizer错误，通常是由于实体类中属性的getter方法名称与Hibernate自动生成的不匹配。解决方法是遵循默认getter方法命名规则，例如对于属性wName，正确的方法应为getwName()，而非getWName()。建议避免手动修改或自定义getter方法。

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org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.component.PojoComponentTuplizer]
	at org.hibernate.tuple.component.ComponentTuplizerFactory.constructTuplizer(ComponentTuplizerFactory.java:101)
	at org.hibernate.tuple.component.ComponentTuplizerFactory.constructDefaultTuplizer(ComponentTuplizerFactory.java:122)
	at org.hibernate.tuple.component.ComponentMetamodel.<init>(ComponentMetamodel.java:80)
	at org.hibernate.mapping.Component.getType(Component.java:172)
	at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:292)
	at org.hibernate.mapping.Property.isValid(Property.java:239)
	at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:483)
	at org.hibernate.mapping.RootClass.validate(RootClass.java:270)
	at org.hibernate.cfg.Configuration.validate(Configuration.java:1329)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1791)
	at com.hibernate.test.ORMappingTest.breforeClass(ORMappingTest.java:26)
	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: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.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	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.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.hibernate.tuple.component.ComponentTuplizerFactory.constructTuplizer(ComponentTuplizerFactory.java:98)
	... 26 more
Caused by: org.hibernate.PropertyNotFoundException: Could not find a getter for wId in class com.chen.hibernate.Wife
	at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:316)
	at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:310)
	at org.hibernate.mapping.Property.getGetter(Property.java:321)
	at org.hibernate.tuple.component.PojoComponentTuplizer.buildGetter(PojoComponentTuplizer.java:155)
	at org.hibernate.tuple.component.AbstractComponentTuplizer.<init>(AbstractComponentTuplizer.java:64)
	at org.hibernate.tuple.component.PojoComponentTuplizer.<init>(PojoComponentTuplizer.java:59)
	... 31 more

java.lang.NullPointerException
	at com.hibernate.test.ORMappingTest.afterClass(ORMappingTest.java:37)
	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: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.RunAfters.evaluate(RunAfters.java:37)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	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)

这个错误一般发生，是因为你的Entity或者Entity的组件的属性 Get方法名字与该属性默认生成的Get方法名字不一致，导致hibernate无法找到这个这个属性的get方法，变回报出这个错误

解决办法：

建议使用默认的方式生成get方法不要修改！

比如说有个属性：private String wName

你自己写的get方法可能是：public String getWName(){

return wName;

}

但是实际上正确的名字应该是：public String getwName(){

return wName;

}

所以建议一般使用默认的get方法，不要自己手写或者修改！