tomcat重启警告：Abandoned connection cleanup thread)

报错信息


The web application [HelloWeb] 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. Stack trace of thread:java.lang.Object.wait(Native Method)java.lang.ref.ReferenceQueue.remove(Unknown Source)com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43)

解决方法

web.xml中加一个监听器；

<listener><listener-class>com.ls.utils.ContextFinalizer</listener-class></listener>

新建一个ContextFinalizer，在tomcat重启的时候，手动杀掉mysql的进程，类如下：

/*** */
/*** @author cdy**/
package com.ls.utils;import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Enumeration;import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;import com.mysql.jdbc.AbandonedConnectionCleanupThread;@WebListener
public class ContextFinalizer implements ServletContextListener {public void contextInitialized(ServletContextEvent sce) {}public void contextDestroyed(ServletContextEvent sce) {Enumeration<Driver> drivers = DriverManager.getDrivers();Driver d = null;while (drivers.hasMoreElements()) {try {d = drivers.nextElement();DriverManager.deregisterDriver(d);System.out.println(String.format("ContextFinalizer:Driver %s deregistered", d));} catch (SQLException ex) {System.out.println(String.format("ContextFinalizer:Error deregistering driver %s", d) + ":" + ex);}}try {AbandonedConnectionCleanupThread.shutdown();} catch (InterruptedException e) {System.out.println("ContextFinalizer:SEVERE problem cleaning up: " + e.getMessage());e.printStackTrace();}}
}

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tomcat重启警告：Abandoned connection cleanup thread)

报错信息

解决方法

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