严重: The web application [/native] created a ThreadLocal with key of type

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严重: The web application [/native] created a ThreadLocal with key of type [com.opensymphony.xwork2.inject.ContainerImpl$10] (value [com.opensymphony.xwork2.inject.ContainerImpl$10@56ff18]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@177d583]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.

严重: The web application [/userManagerSystem] registered the JDBC driver [oracle.jdbc.driver.OracleDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.userManagerSystem

上网查看解决之道后得出结论：

大概是说tomcat 6.025之后引入了一种内存泄露的检查机制，会把不能垃圾收集的对像做日志

解决办法：
法一：使用低于tomcat 6.0的版本
法二：先将服务关掉，然后部署工程，再启动服务。
法三：在tomcat的server.xml文件中把 <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/> 这个监听给关了