Question

ssh项目部署以后报错，但是没有影响，依然可以执行，请问这错是什么意思，该怎么解决？

2011-4-19 13:20:28 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [/shikai] registered the JDBC 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.
2011-4-19 13:20:28 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
严重: The web application [/shikai] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@171b4ca]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@1474fc]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
2011-4-19 13:20:28 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
严重: The web application [/shikai] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@10c6406]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@7ae747]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
2011-4-19 13:20:28 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
严重: The web application [/shikai] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@171b4ca]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@e5f0d2]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
log4j:ERROR LogMananger.repositorySelector was null likely due to error in class reloading, using NOPLoggerRepository.

ssh项目部署以后报错，但是没有影响，依然可以执行，请问这错是什么意思，该怎么解决？

Answer 1

意思是你的web工程shikai注册了一个jdbc连接，但关闭web服务的时候jdbc连接没有释放，这可能会造成内存泄露。为了避免这种情况发生，jdbc连接被强行关闭了。

总体的意思就是你的代码有内存泄露的风险，但服务器很牛逼的帮你避免了这种情况，基本属于服务器在自吹自擂，你不管也行，想管的话检查下代码。

从报错信息只能看出这么多了

Answer 2

你没导入Mysql的JAR包

Answer 3

你的mysql.jar没有导入哦