Struts2（二）action的三种方式

一、普通java类

package com.pb.web.action;
/*
 * 创建普通的java类
 */
public class HelloAction1 {
    public String execute(){
        return "success";

    }

}

二、实现Action接口

package com.pb.web.action;

import com.opensymphony.xwork2.Action;
/*
 * 第二种实现Action接口
 */
public class HelloAction2 implements Action {

    @Override
    public String execute() throws Exception {
        // TODO Auto-generated method stub
        return "success";
    }

}

三、继承ActionSupport

package com.pb.web.action;

import com.opensymphony.xwork2.ActionSupport;
/*
 * 第三种 继承  ActionSupport类它是Action的实现类
 */
public class HelloAction3 extends ActionSupport {

    /**
     *
     */
    private static final long serialVersionUID = 1L;

    @Override
    public String execute() throws Exception {
        // TODO Auto-generated method stub
        return "success";
    }

}