tomcat服务器宕机解决方案

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(); } } }

 <listener> <listener-class>cn.listener.ContextFinalizer</listener-class> </listener>