2)ServletContextAttributeListener:
ServletContextAttributeListener能监测到有人正在往ServletContext里添加属性。你可以采取相应的措施。
例 2.2.2.1
web.xml当中再加入一段话:
<listener>
<listener-class>com.MyServletContextAttributeListener</listener-class>
</listener>
package com;
import javax.servlet.ServletContextAttributeEvent;
import javax.servlet.ServletContextAttributeListener;
public class MyServletContextAttributeListener implements ServletContextAttributeListener {
public void attributeAdded(ServletContextAttributeEvent arg0) {
System.out.println("增加了" + arg0.getName() + " " +
arg0.getValue() );
}
public void attributeRemoved(ServletContextAttributeEvent arg0) {
System.out.println("去除了" + arg0.getName() + " " +
arg0.getValue() );
}
public void attributeReplaced(ServletContextAttributeEvent arg0) {
System.out.println("取代了" + arg0.getName() + " " +
ServletContextAttributeListener的用法和实例
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转载自blog.csdn.net/mark_to_win/article/details/84983168
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