版主，问一下。。 - JEECMS官方论坛|开源java cms,jsp cms,jsp bbs

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1# 发表于:2011-05-04 12:06:35 IP:222.104.*.*

严重: The web application [/cms] registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2011-5-4 11:58:41 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/cms] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak.
2011-5-4 11:58:41 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/cms] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0] but has failed to stop it. This is very likely to create a memory leak.
2011-5-4 11:58:41 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/cms] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] but has failed to stop it. This is very likely to create a memory leak.
2011-5-4 11:58:41 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/cms] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2] but has failed to stop it. This is very likely to create a memory leak.
2011-5-4 11:58:41 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/cms] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.
，这是什么错误啊？