C3P0 DEBUG -- CLOSE BY CLIENT STACK TRACE

C3P0连接出错，
2009-10-27 22:25:18,046 DEBUG [org.springframework.orm.hibernate3.SessionFactoryUtils] - Closing Hibernate Session
2009-10-27 22:25:18,046 DEBUG [org.hibernate.impl.SessionImpl] - closing session
2009-10-27 22:25:18,046 DEBUG [org.hibernate.jdbc.ConnectionManager] - performing cleanup
2009-10-27 22:25:18,046 DEBUG [org.hibernate.jdbc.ConnectionManager] - releasing JDBC connection [ (open PreparedStatements: 1, globally: 2) (open ResultSets: 0, globally: 0)]
2009-10-27 22:25:18,046 DEBUG [com.mchange.v2.c3p0.stmt.GooGooStatementCache] - checkinAll(): com.mchange.v2.c3p0.stmt.GlobalMaxOnlyStatementCache stats -- total size: 1; checked out: 0; num connections: 1; num keys: 1
2009-10-27 22:25:18,046 DEBUG [com.mchange.v2.resourcepool.BasicResourcePool] - Preparing to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@8b9252
2009-10-27 22:25:18,046 DEBUG [com.mchange.v2.resourcepool.BasicResourcePool] - trace com.mchange.v2.resourcepool.BasicResourcePool@16564ae [managed: 3, unused: 3, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@d04026)
2009-10-27 22:25:18,046 DEBUG [com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool] - Preparing to destroy PooledConnection: com.mchange.v2.c3p0.impl.NewPooledConnection@8b9252
2009-10-27 22:25:18,046 DEBUG [org.hibernate.jdbc.JDBCContext] - after transaction completion
2009-10-27 22:25:18,046 DEBUG [org.hibernate.jdbc.ConnectionManager] - transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!
2009-10-27 22:25:18,046 DEBUG [org.hibernate.impl.SessionImpl] - after transaction completion
2009-10-27 22:25:18,046 DEBUG [com.mchange.v2.c3p0.stmt.GooGooStatementCache] - ENTER METHOD: closeAll( com.microsoft.jdbc.sqlserver.SQLServerConnection@1abecba )! -- num_connections: 1
2009-10-27 22:25:18,062 DEBUG [com.mchange.v2.c3p0.stmt.GooGooStatementCache] - closeAll(): com.mchange.v2.c3p0.stmt.GlobalMaxOnlyStatementCache stats -- total size: 0; checked out: 0; num connections: 0; num keys: 0
2009-10-27 22:25:18,062 DEBUG [com.mchange.v2.c3p0.impl.NewPooledConnection] - com.mchange.v2.c3p0.impl.NewPooledConnection@8b9252 closed by a client.
java.lang.Exception: DEBUG -- CLOSE BY CLIENT STACK TRACE
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:566)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:234)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:470)
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:964)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
2009-10-27 22:25:18,062 DEBUG [com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool] - Successfully destroyed PooledConnection: com.mchange.v2.c3p0.impl.NewPooledConnection@8b9252
2009-10-27 22:25:18,062 DEBUG [com.mchange.v2.resourcepool.BasicResourcePool] - Successfully destroyed resource: com.mchange.v2.c3p0.impl.NewPooledConnection@8b9252
2009-10-27 22:25:49,968 DEBUG [org.springframework.beans.factory.support.DefaultListableBeanFactory] - No bean named 'org.apache.struts2.dispatcher.ServletDispatcherResult' found in org.springframework.beans.factory.support.DefaultListableBeanFactory@1c882db: defining beans [propertyConfigurer,dataSource,sessionFactory,transactionManager,transactionInterceptor,org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator#0,org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor#0,userAction,newsAction,homeAction,userService,newService,genericDao,userDao,newsDao]; root of factory hierarchy
2009-10-27 22:25:49,968 DEBUG [org.springframework.beans.factory.support.DefaultListableBeanFactory] - Ignoring constructor [public org.apache.struts2.dispatcher.ServletDispatcherResult(java.lang.String)] of bean 'org.apache.struts2.dispatcher.ServletDispatcherResult': org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.struts2.dispatcher.ServletDispatcherResult': Unsatisfied dependency expressed through constructor argument with index 0 of type [java.lang.String]: No unique bean of type [java.lang.String] is defined: Unsatisfied dependency of type [class java.lang.String]: expected at least 1 matching bean
2009-10-27 22:25:49,984 DEBUG [org.apache.struts2.dispatcher.ServletDispatcherResult] - Forwarding to location /error.jsp
2009-10-27 22:25:49,984 DEBUG [com.opensymphony.xwork2.conversion.impl.InstantiatingNullHandler] - Entering nullPropertyValue [target=[com.opensymphony.xwork2.interceptor.ExceptionHolder@422ba9, com.company.action.UserAction@802202, com.opensymphony.xwork2.DefaultTextProvider@11c38eb], property=org]
2009-10-27 2