SSM项目关闭时报错：[Abandoned connection cleanup thread] but has failed to stop it...

 
SSM整合小项目关闭时tomcat报错：
The web application [] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak
 
原因似乎是数据库的驱动无法释放。
解决方法：

• 自定义一个监听器，用于终止mysql进程：

public class DriverMangerListener implements ServletContextListener {

    @Override
    public void contextInitialized(ServletContextEvent sce) {

    }

    public void contextDestroyed(ServletContextEvent sce) {
        Enumeration<Driver> enumeration = DriverManager.getDrivers();
        while (enumeration.hasMoreElements()) {
            try {
                DriverManager.deregisterDriver(enumeration.nextElement());
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}

• 将该监听器在web.xml中配置：

<listener>
      <listener-class>com.ssm.listener.DriverMangerListener</listener-class>
</listener>

• pom.xml中删除mysql驱动包依赖，将驱动包放到tomcat安装目录的lib目录下。
• ok。
   

参考：https://blog.csdn.net/www646288178/article/details/79391940