今天写一个Web项目，Tomcat 总是出现无响应状态，也没有错误或者异常抛出

有道是，重启可以解决99%的问题，

于是一开始我总是用重启于解决这个问题，然重复重启太浪费时间

于是我召唤出了LOG大法，看了看Tomcat的log

发现了下面一句话，然后我就灰溜溜的退出了直播间

The web application [tavern] appears to have started a thread named [Druid-ConnectionPool-Destroy-1080082471] but has failed to stop it. This is very likely to create a memory leak.

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The web application [tavern] appears to have started a thread named [Druid-ConnectionPool-Destroy-1080082471] but has failed to stop it. This is very likely to create a memory leak.

是的你没有看错，就是没有关闭数据库连接池，导致了内存泄漏，从而导致没有响应了。

反思：过于依赖框架忘记了JDBC这最重要的一步真是太不应该了