java.lang.NoSuchFieldError:NONE

最新推荐文章于 2023-02-01 17:27:56 发布

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最新推荐文章于 2023-02-01 17:27:56 发布

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分类专栏： JPA

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本文介绍了一个在JPA项目中遇到的java.lang.NoSuchFieldError:NONE错误及其解决方法。错误由Hibernate和Java EE环境中LockModeType类的冲突引起。解决方案是移除MyEclipse中的Java EE 5 Libraries。

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今天在做一个jpa项目时候遇到这样的错误。java.lang.NoSuchFieldError: NONE

具体错误原因如下：

java.lang.NoSuchFieldError: NONE

at org.hibernate.ejb.QueryImpl.(QueryImpl.java:609)

at org.hibernate.ejb.QueryImpl.(QueryImpl.java:80)

atorg.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:277)

at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)

atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

atorg.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:366)

at $Proxy16.createQuery(Unknown Source)

at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)

atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

atorg.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:241)

at $Proxy13.createQuery(Unknown Source)

atcom.fob.service.base.DaoSupport.getCount(DaoSupport.java:44)

at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)

atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

atorg.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)

atorg.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)

atorg.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)

atorg.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)

atorg.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)

atorg.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)

atorg.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

atorg.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)

at $Proxy14.getCount(Unknown Source)

at com.fob.test.shoptest.count(shoptest.java:70)

at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)

atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

atorg.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)

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

atorg.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)

atorg.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

atorg.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)

atorg.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)

atorg.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)

atorg.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)

atorg.junit.runners.ParentRunner$3.run(ParentRunner.java:193)

atorg.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)

atorg.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)

atorg.junit.runners.ParentRunner.access$000(ParentRunner.java:42)

atorg.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)

atorg.junit.runners.ParentRunner.run(ParentRunner.java:236)

atorg.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)

atorg.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)

atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)

atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)

atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

在网上搜索到解决办法：原因：

错误是由javax.persistence.LockModeType造成的。 hibernate-jpa-2.0-api-1.0.0.Final.jar和JavaEE 5中javaee.jar 都存在此类。

但二者中代码却有差异，具体到此错误：hibernate-jpa-2.0-api-1.0.0.Final.jar存在NONE域，在javaee.jar中不存在NONE域。hibernate3.x实现中，需要调用有NONE域的LockModeType类，这里显然是使用javaee.jar中的LockModeType类。

解决方法： 将Myeclipse中Java EE 5Libraries从Myeclipse "BuildPath""Liberaries"中删除即可。

呵呵，又是j2ee环境造成的，记得前不久还出现过无法加载Bean工厂的情况，花了两个小时找bug，最后发现将j2ee6换成j2ee5就好了