package com.huhx.interceptor;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

public class RegisterInterceptor extends AbstractInterceptor {
    private static final long serialVersionUID = 1L;

    @Override
    public String intercept(ActionInvocation invocation) throws Exception {
        System.out.println("拦截器开始运行....");
        String resultString = invocation.invoke();
        System.out.println("拦截器结束运行....");
        return resultString;
    }
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <package name="default" namespace="/" extends="struts-default">
        <interceptors>
            <interceptor name="registerInterceptor" class="com.huhx.interceptor.RegisterInterceptor"></interceptor>
        </interceptors>
        <action name="hello" class="com.huhx.struts.HuhxAction">
            <result name="success">/huhx.jsp</result>
            <interceptor-ref name="defaultStack"></interceptor-ref>
            <interceptor-ref name="registerInterceptor"></interceptor-ref>
        </action>
    </package>
</struts>

拦截器开始运行....
hello world.
拦截器结束运行....