報(bào)錯(cuò)信息:
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java.lang.Object.wait(Native Method) java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43) |
每次出現(xiàn)這個(gè)報(bào)錯(cuò)都會(huì)導(dǎo)致tomcat應(yīng)用服務(wù)器停機(jī),加了下面的java代碼后就再也沒(méi)有停過(guò)了。
解決辦法:
編寫Java代碼
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package cn.listener; 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(); } } } |
@WebListener,這個(gè)注解相當(dāng)于在web.xml配置如下內(nèi)容
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< listener > < listener-class >cn.listener.ContextFinalizer</ listener-class > </ listener > |
解決方案可以參考如下網(wǎng)址
當(dāng)然還有就是我再參考這個(gè)解決方案的時(shí)候,發(fā)現(xiàn)mysql-connection如果版本過(guò)低會(huì)導(dǎo)致上述列出的Java代碼報(bào)錯(cuò),通過(guò)提高mysql-connection.java的版本即可解決該問(wèn)題
以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持服務(wù)器之家。
原文鏈接:https://www.cnblogs.com/youcong/p/9281024.html