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在测试JPA的时候出现了如下的错误信息：
java.lang.NoSuchFieldError: NONE
at org.hibernate.ejb.QueryImpl.<init>(QueryImpl.java:609)
at org.hibernate.ejb.QueryImpl.<init>(QueryImpl.java:80)
at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:272)
at entity.PersonTest.insertAndRetrieve(PersonTest.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
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: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)
解决方法及原因：（http://stackoverflow.com/questions/6295389/java-lang-nosuchfielderror-while-using-the-jpa）
Remove the ejb3-persistence.jar JAR file from the class path. It contains the interfaces of the JPA 1.0 specification. You'll need to retain the hibernate-jpa-2.0-api-1.0.0-CR-1.jar JAR file, for it contains the interfaces for the JPA 2.0 specification.
Note: If you need to work against JPA 1.0, then do not use Hibernate 3.5.5 for it contains the JPA 2.0 implementation. In the future, use Maven for dependency management; it will help you avoid these issues.
把 ejb3-persistence.jar 这个jar包删除掉之后，问题解决。这篇关于java.lang.NoSuchFieldError: NONE的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
