今天遇到这个奇怪的问题，保存数据到数据库时总是报这个异常：

org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl HHH000010: On release of batch it still contained JDBC statements

Exception in thread “taskExecutor-1” java.lang.AbstractMethodError: com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.setCharacterStream(ILjava/io/Reader;J)V

    at org.hibernate.type.descriptor.sql.ClobTypeDescriptor$4$1.doBind(ClobTypeDescriptor.java:114)

    at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:93)

    at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:280)

    at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:275)

    at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:57)

    at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2786)

    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3064)

    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3509)

    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88)

    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:364)

    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:356)

    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:277)

    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:328)

    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52)

    at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234)

    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404)

    at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)

    at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)

    at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:75)

    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:513)

    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:755)

    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724)

    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:475)

    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:270)

    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)

    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)

    at org.springframework.context.event.SimpleApplicationEventMulticaster$1.run(SimpleApplicationEventMulticaster.java:91)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

    at java.lang.Thread.run(Thread.java:744)

在别人的帮助下，找到数据库中有text格式的字段，使用JPA映射成entity之后，会在text字段前面加上注解@LOB，去掉注解之后保存成功。