java.sql。com.mysql.jdbc SQLException异常:连接。JDBC4Connection@1ab9c42关闭

Hi all I'm using JSP+Struts2+Tomcat6+Hibernate+mysql as my J2EE framework. the project works fine on local but when I put it on the server after some hours I get this error:Hi all I'm using JSP+Struts2+Tomcat6+Hibernate+