org.hibernate.TransactionException: JDBC begin failed解决方案
org.hibernate.TransactionException: JDBC begin failed:
at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:68)
at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1326)
at com.stable.application.common.hibernate.HibernateSessionFactory.beginTransaction(HibernateSessionFactory.java:136)
at com.stable.application.common.struts.AduActionServlet.process(AduActionServlet.java:78)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at com.stable.application.common.struts.AduActionServlet.doGet(AduActionServlet.java:104)
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 com.stable.application.common.http.filter.UserSessionFilter.doFilter(UserSessionFilter.java:57)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.stable.application.common.http.filter.RequestEncodeFilter.doFilter(RequestEncodeFilter.java:51)
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:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.sql.SQLException: Couldn't perform the operation getAutoCommit: You can't perform any operations on this connection. It has been automatically closed by Proxool for some reason (see logs).
at org.logicalcobwebs.proxool.WrappedConnection.invoke(WrappedConnection.java:207)
at org.logicalcobwebs.proxool.WrappedConnection.intercept(WrappedConnection.java:87)
at $java.sql.Wrapper$$EnhancerByProxool$$1cc186b6.getAutoCommit(<generated>)
at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:57)
... 25 more
开发环境：(tomcat,ssh,DBCP连接池)
出现此异常的情况介绍：访问项目搁置一段时间再访问的时候，就出现了如上的异常；
解决方案：
在spring配置文件中配置数据源的时候，添加如下几项属性配置：
<!-- 下面三项是确保获得的连接是有效的 -->
<property name="testOnBorrow" value="true"></property>
<property name="testOnReturn" value="true"></property>
<property name="testWhileIdle" value="true"></property>
<property name="validationQuery" value="SELECT 1"></property>
<property name="timeBetweenEvictionRunsMillis" value="检查无效连接的时间间隔"></property>
<property name="minEvictableIdleTimeMillis" value="连接闲置的时间"></property>