MYSQL在空闲一段时间后会断开连接吗？

NICKY.BOY

我用JDBC连接MYSQL，发现自己的WEB服务经过长时间闲置后，进行第一次访问会出错。再次打开IE后就一切正常。我想请教大虾这个是什么原因？
IE显示错误大致如下：
错误原因为：java.sql.SQLException: No operations allowed after connection closed. Connection was closed due to the following exception: ** BEGIN NESTED EXCEPTION ** java.sql.SQLException MESSAGE: Communication link failure: java.io.EOFException, underlying cause: null ** BEGIN NESTED EXCEPTION ** java.io.EOFException STACKTRACE: java.io.EOFException at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1394) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:153 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1929) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1167) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:127 at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1224) at com.mysql.jdbc.Connection.execSQL(Connection.java:224 at com.mysql.jdbc.Connection.execSQL(Connection.java:220 at com.mysql.jdbc.Connection.execSQL(Connection.java:2189) at com.mysql.jdbc.Connection.setAutoCommit(Connection.java:546) at org.apache.commons.dbcp.DelegatingConnection.setAutoCommit(DelegatingConnection.java:237) at org.apache.commons.dbcp.PoolableConnectionFactory.activateObject(PoolableConnectionFactory.java:273) at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(Unknown Source) at org.apache.commons.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:117) at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:110) at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:312) at org.apache.jsp.Logon_jsp._jspService(Logon_jsp.java:110) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:30 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:24 at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199) at
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