JEECMS3.0.4刚进入后台常会出现500错误，刷新一下又正常了，几分钟没操作也会出现500错误。刷新几下也能正常。 在同样的环境装过其它的java + mysql的程序没这问题。刚装好就那样，已指定了默认模型，没做什么修改操作。 前台一会不操作也会出现500错误。 环境： windows7 jdk1.6.0_22 apache-tomcat-6.0.29 MySQL5.1

这个得具体看看500报错是什么错误。

HTTP Status 500 - 

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type Exception report

message 

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.TransactionException: JDBC begin failed: 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:656)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
com.jeecms.common.web.ProcessTimeFilter.doFilter(ProcessTimeFilter.java:38)


 root cause 
org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.TransactionException: JDBC begin failed: 
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:596)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy10.findByDomain(Unknown Source)
com.jeecms.cms.web.AdminContextInterceptor.getByDomain(AdminContextInterceptor.java:227)
com.jeecms.cms.web.AdminContextInterceptor.getSite(AdminContextInterceptor.java:176)
com.jeecms.cms.web.AdminContextInterceptor.preHandle(AdminContextInterceptor.java:49)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:781)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
com.jeecms.common.web.ProcessTimeFilter.doFilter(ProcessTimeFilter.java:38)


 root cause 
org.hibernate.TransactionException: JDBC begin failed: 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:96)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354)
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:555)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy10.findByDomain(Unknown Source)
com.jeecms.cms.web.AdminContextInterceptor.getByDomain(AdminContextInterceptor.java:227)
com.jeecms.cms.web.AdminContextInterceptor.getSite(AdminContextInterceptor.java:176)
com.jeecms.cms.web.AdminContextInterceptor.preHandle(AdminContextInterceptor.java:49)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:781)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
com.jeecms.common.web.ProcessTimeFilter.doFilter(ProcessTimeFilter.java:38)


 root cause 
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 461,837 milliseconds ago.  The last packet sent successfully to the server was 0 milliseconds ago.
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
java.lang.reflect.Constructor.newInstance(Constructor.java:513)
com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3030)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2916)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3459)
com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:5036)
com.mchange.v2.c3p0.impl.NewProxyConnection.setAutoCommit(NewProxyConnection.java:881)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:91)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354)
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:555)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy10.findByDomain(Unknown Source)
com.jeecms.cms.web.AdminContextInterceptor.getByDomain(AdminContextInterceptor.java:227)
com.jeecms.cms.web.AdminContextInterceptor.getSite(AdminContextInterceptor.java:176)
com.jeecms.cms.web.AdminContextInterceptor.preHandle(AdminContextInterceptor.java:49)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:781)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
com.jeecms.common.web.ProcessTimeFilter.doFilter(ProcessTimeFilter.java:38)


 root cause 
java.net.SocketException: Software caused connection abort: recv failed
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)
com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)
com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)
com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2472)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2927)
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2916)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3459)
com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:5036)
com.mchange.v2.c3p0.impl.NewProxyConnection.setAutoCommit(NewProxyConnection.java:881)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:91)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354)
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:555)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy10.findByDomain(Unknown Source)
com.jeecms.cms.web.AdminContextInterceptor.getByDomain(AdminContextInterceptor.java:227)
com.jeecms.cms.web.AdminContextInterceptor.getSite(AdminContextInterceptor.java:176)
com.jeecms.cms.web.AdminContextInterceptor.preHandle(AdminContextInterceptor.java:49)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:781)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
com.jeecms.common.web.ProcessTimeFilter.doFilter(ProcessTimeFilter.java:38)


 note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.

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Apache Tomcat/6.0.29

JDBC begin failed,看看是不是数据库设置了超时或者防火墙的问题

谢谢，把mysql的配置文件改了下就好了。
interactive_timeout=28800
wait_timeout=28800

原来为160改成了28800