项目运行时，一段时间后报这个错误
net.sourceforge.jtds.jdbc.JtdsPreparedStatement.close(JtdsPreparedStatement.java:485)
at org.apache.commons.dbcp.DelegatingStatement.close(DelegatingStatement.java:168)
at org.apache.commons.dbcp.DelegatingConnection.passivate(DelegatingConnection.java:426)
at org.apache.commons.dbcp.DelegatingConnection.close(DelegatingConnection.java:246)
at org.apache.commons.dbcp.PoolableConnection.reallyClose(PoolableConnection.java:122)
at org.apache.commons.dbcp.PoolableConnectionFactory.destroyObject(PoolableConnectionFactory.java:628)
at org.apache.commons.pool.impl.GenericObjectPool.invalidateObject(GenericObjectPool.java:1290)
at org.apache.commons.dbcp.AbandonedObjectPool.invalidateObject(AbandonedObjectPool.java:125)
at org.apache.commons.dbcp.AbandonedObjectPool.removeAbandoned(AbandonedObjectPool.java:158)
at org.apache.commons.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:77)
at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:106)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1700)
at org.hibernate.loader.Loader.doQuery(Loader.java:801)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2037)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:86)
at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:76)
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3293)
at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:496)
at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:477)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:227)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:1005)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:998)
at com.googlecode.genericdao.dao.hibernate.HibernateBaseDAO._get(HibernateBaseDAO.java:332)
at com.googlecode.genericdao.dao.hibernate.GeneralDAOImpl.find(GeneralDAOImpl.java:39)
at com.centerSoft.soms.service.impl.BaseManagerImpl.commLoad(BaseManagerImpl.java:310)
at sun.reflect.GeneratedMethodAccessor261.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:319)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at com.sun.proxy.$Proxy40.commLoad(Unknown Source)
at com.centerSoft.soms.action.DataDicAction.getAllDatadic(DataDicAction.java:92)
at sun.reflect.GeneratedMethodAccessor2374.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:453)
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Caused by: java.net.SocketException: socket closed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:152)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at java.io.DataInputStream.readFully(DataInputStream.java:195)
at java.io.DataInputStream.readFully(DataInputStream.java:169)
at net.sourceforge.jtds.jdbc.SharedSocket.readPacket(SharedSocket.java:846)
at net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:727)
at net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:466)
at net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:135)
at net.sourceforge.jtds.jdbc.ResponseStream.readString(ResponseStream.java:290)
at net.sourceforge.jtds.jdbc.ResponseStream.readNonUnicodeString(ResponseStream.java:274)
at net.sourceforge.jtds.jdbc.TdsData.readData(TdsData.java:936)
at net.sourceforge.jtds.jdbc.TdsCore.tdsRowToken(TdsCore.java:3007)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2270)
