在项目的运行过程中时不时的在控制台打印出的错误信息，错误信息出现后未影响到程序的运行，所以一直都未此过多关注，现在，项目接近尾声，想把此问题解决，控制台打印的具体信息如下：
java.sql.SQLException: Connection is invalid
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1.testPooledConnection(C3P0PooledConnectionPool.java:196)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1.refurbishIdleResource(C3P0PooledConnectionPool.java:136)
at com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask.run(BasicResourcePool.java:1394)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:368)
在网上搜索了一些解决方案，说这不是问题,仅仅是一个定时的测试连接是否正常的程序,可以在连接池的配置文件中禁掉。
所以我在spring的配置文件中加入了一下信息：
<property name="testConnectionOnCheckout">
<value>true</value>
</property>
但问题貌似没有解决，程序运行的时候还是会时不时的在控制台打印上面的错误信息，而且有一次tomcat服务器无故自动关闭了，甚是不解，呃……不知道还有没有其他的解决方案，在此请教了…………
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