Object references an unsaved transient instance-Save the transient instance before flushing

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This problem occurs only when many jar packages are removed during project writing.

Struts problem report

Struts has detected an unhandled exception:

Messages:	Object references an unsaved transient instance-Save the transient instance before flushing: COM. yy. entity. Orgnization Object references an unsaved transient instance-Save the transient instance before flushing: COM. YY. entity. orgnization; Nested exception is Org. hibernate. transientobjectexception: Object references an unsaved transient instance-Save the transient instance Before flushing: COM. yy. entity. Orgnization
File:	Org/hibernate/engine/foreignkeys. Java
Line number:	243

Stacktraces

Org. springframework. Dao. Events: Object references an unsaved transient instance-Save the transient instance before flushing: COM. yy. entity. orgnization; Nested exception is org. hibernate. transientobjectexception: Object
References an unsaved transient instance-Save the transient instance before flushing: COM. yy. entity. Orgnization

    org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:654)    org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:793)    org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:664)    org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)    org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)    org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)    org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)    $Proxy14.save(Unknown Source)    com.yy.action.OrgAction.save(OrgAction.java:101)    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)    java.lang.reflect.Method.invoke(Method.java:597)

You just need to add the antlr-2.7.6.jar. 3 hours wasted on this, tangle.