请教：java.sql.SQLException: 关闭的连接

2009-08-03 09:43:51  An exception occured in error  findOrderPlant : java.sql.SQLException: 关闭的连接
java.sql.SQLException: 关闭的连接
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
at oracle.jdbc.driver.PhysicalConnection.createStatement(PhysicalConnection.java:722)
at oracle.jdbc.driver.PhysicalConnection.createStatement(PhysicalConnection.java:698)
at sun.reflect.GeneratedMethodAccessor54.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.logicalcobwebs.proxool.ProxyConnection.invoke(ProxyConnection.java:68)
at org.logicalcobwebs.cglib.proxy.Proxy$ProxyImpl$$EnhancerByCGLIB$$52e1e598.createStatement(<generated>)
at qqbean.sm.oms.OrderAccreditation.OrderAccreditationDAO.findOrderPlant(OrderAccreditationDAO.java:957)
at qqbean.sm.oms.OrderAccreditation.OrderAccreditationBO.addConsignmentDate(OrderAccreditationBO.java:622)
at qqbean.sm.oms.OrderAccreditation.OrderAccreditationBO.orderOperation(OrderAccreditationBO.java:766)
at qqbean.sm.oms.OrderAccreditation.OrderAccreditationCommand.execute(OrderAccreditationCommand.java:143)
at qqbean.app.Controller.processRequest(Controller.java:87)
at qqbean.app.Controller.doGet(Controller.java:55)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at qqbean.common.app.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)