标签：pool lan class sdn key host csdn this tar
在Tomcat的server.xml中配置两个context，出现其中一个不能正常启动，交换配置顺序，另一个又不能正常启动，即始终只有第二个配置能启动的情况。如果单独部署，都没有问题。报错大致内容如下：
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.
起初以为是内存分配不够，但加大了内容配置问题依然。
于是在localhost.log中又找到以下错误信息：
严重: Exception sending context initialized event to listener instance of class org.springframework.web.util.Log4jConfigListener
Java.lang.IllegalStateException:
Web app root system property already set to different value:
‘webapp.root‘ = [/home/web/grows/] instead of [/home/web/mall/] - Choose
unique values for the ‘webAppRootKey‘ context-param in your web.xml
files!
大意是Log4jConfigListener在获取webapp.root值时，被后一context的值替换掉了，所以要在各个项目的web.xml中配置不同的webAppRootKey值，随即在其中一个web.xml中添加：
<context-param>
<param-name>webAppRootKey</param-name>
<param-value>web.sample.root</param-value>
</context-param>
重启tomcat，问题解决。
Choose unique values for the 'webAppRootKey' context-param in your web.xml files!
标签：pool lan class sdn key host csdn this tar
原文地址：http://www.cnblogs.com/sos-blue/p/6864333.html
