1.新建login.jsp
<body> <a href="HelloAction.action">点击统计action执行时间</a> </body>
2.新建Action
package com.myz.action; import com.opensymphony.xwork2.ActionSupport; public class HelloAction extends ActionSupport { @Override public String execute() throws Exception { // TODO Auto-generated method stub return SUCCESS; } }
3.新建拦截器
package com.myz.action; import com.opensymphony.xwork2.ActionInvocation; import com.opensymphony.xwork2.interceptor.AbstractInterceptor; public class TimerInterceptor extends AbstractInterceptor { @Override public String intercept(ActionInvocation invocation) throws Exception { // TODO Auto-generated method stub //开始时候的毫秒数 long start = System.currentTimeMillis(); //2.执行下一个拦截器，如果已是最后一个拦截器，则执行目标action String invoke = invocation.invoke(); //3.执行完的毫秒数 long end = System.currentTimeMillis(); System.out.println("action执行时间："+(end-start)+"ms"); return invoke; } }
4.配置拦截器
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="default" namespace="/" extends="struts-default"> <!-- 注册拦截器 --> <interceptors> <interceptor name="mytimer" class="com.myz.action.TimerInterceptor"></interceptor> </interceptors> <action name="HelloAction" class="com.myz.action.HelloAction"> <result>/loginok.jsp</result> <!-- 引用拦截器 --> <interceptor-ref name="mytimer"></interceptor-ref> </action> </package> </struts>
5.发布项目，http://localhost:8080/InterceptorTest/login.jsp，点击统计，后台输出action执行时间