package com.doumee;
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import javax.servlet.ServletContextEvent;
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import javax.servlet.ServletContextListener;
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import javax.servlet.annotation.WebListener;
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import java.sql.Driver;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import java.util.Enumeration;
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import com.mysql.cj.jdbc.AbandonedConnectionCleanupThread;
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//@WebListener
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public class ContextFinalizer implements ServletContextListener{
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public void contextInitialized(ServletContextEvent sce) {}
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public void contextDestroyed(ServletContextEvent sce) {
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Enumeration<Driver> drivers = DriverManager.getDrivers();
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Driver d = null;
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while (drivers.hasMoreElements()) {
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try {
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d = drivers.nextElement();
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DriverManager.deregisterDriver(d);
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} catch (SQLException ex) {
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}
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}
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try {
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// 注意：mysql8版本的jar好像shutdown方法私有了，只能调用checkedShutdown或uncheckedShutdown
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AbandonedConnectionCleanupThread.checkedShutdown();
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} catch ( Exception e) {
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e.printStackTrace();
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}
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}
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}
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