A web application created a ThreadLocal with key of type [null]

最新推荐文章于 2021-04-26 15:49:28 发布
最新推荐文章于 2021-04-26 15:49:28 发布
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分类专栏： 常见错误 文章标签： application null web log4j webapp leak
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本文链接：https://blog.youkuaiyun.com/zhang89jintao/article/details/5908986
本文记录了一次因ThreadLocal使用不当导致的Web应用程序内存泄漏问题。文中提到了具体错误信息及日志提示，并给出了逐步排查的方法，包括清除临时配置、检查ThreadLocal使用情况等。

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信息: Reloading context [/sc]
2010-2-6 22:21:23 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
严 重: A web application created a ThreadLocal with key of type [null] (value [com.sun.faces.config.ConfigureListener$1@185572a]) and a value of type [null] (value [null]) but failed to remove it when the web application was stopped. To prevent a memory leak, the ThreadLocal has been forcibly removed.
log4j:WARN No appenders could be found for logger (org.apache.struts.util.PropertyMessageResources).
log4j:WARN Please initialize the log4j system properly.

建议先把webapp下的应用移出去，空的情况下启动一下，看是否有这个问题，如果没有，在自己的代码或者基础代码里查询“ThreadLocal”这个 关键字，是不是这个类的方法返回null了。先确定是系统级还是应用级的，确定问题的可能范围，这样不失是一个好的解决方法。

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