Hibernate错误Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]

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#hibernate #junit #struts #getter #class

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本文记录了一次Hibernate使用过程中遇到的“Unable to instantiate default tuplizer”异常，并详细展示了完整的错误堆栈跟踪。通过分析发现，问题根源在于User实体类中缺少remark属性的getter方法。

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今天写一个东西的时候遇到了这样的错误“Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]”具体的错误信息是这样的

java.lang.ExceptionInInitializerError
    at hicc.cn.exam.util.HibernateUtil.buildSessionFactory(HibernateUtil.java:19)
    at hicc.cn.exam.util.HibernateUtil.<clinit>(HibernateUtil.java:10)
    at hicc.cn.exam.dao.impl.UserDaoImpl.importList(UserDaoImpl.java:34)
    at hicc.cn.exam.dao.impl.UserDaoImplTest.testImportList(UserDaoImplTest.java:17)
    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.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
    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.HibernateException: Unable to instantiate
default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
    at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:108)
    at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:133)
    at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:80)
    at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:322)
    at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:473)
    at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:133)
    at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:284)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1842)
    at hicc.cn.exam.util.HibernateUtil.buildSessionFactory(HibernateUtil.java:15)
    ...
26 more 
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:105)
    ...
35 more 
Caused by: org.hibernate.PropertyNotFoundException: Could not find a getter
for remark in 
class hicc.cn.exam.vo.User
    at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:326)
    at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:320)
    at org.hibernate.mapping.Property.getGetter(Property.java:304)
    at org.hibernate.tuple.entity.PojoEntityTuplizer.buildPropertyGetter(PojoEntityTuplizer.java:297)
    at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:155)
    at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:77)
    ...
40 more

在网上搜一下，由于没有仔细看错误信息，那个帖子说的是没有导入javaassist.jar 这个包。但是我已经导入了，以为现在下载的这个struts2 版本没有这个包不能运行。我又拷贝了错误信息看了一下，发现了：“org.hibernate.PropertyNotFoundException: Could not find a getter for remark in class *.*.*.vo.User”，豁然开朗了。因为配置文件或PO类的错误。修改一下能运行了。