Struts2防止表单重复提交

绝地灬酷狼 2023-10-17 10:59 1阅读 0赞

## Struts2防止表单重复提交 ##

环境搭建、工程创建略去，有兴趣的可以参考  
[环境搭建的步骤][Link 1]  
先大致讲一下思路：我会建一个简单的页面做提交表单  
表单只包含两项内容，提交给一个action处理，当表单提交  
成功我们跳转到一个页面，此时按下F5重复提交表单，让  
Struts2帮我们拦截这个重复提交的请求！

一、按照惯例，先建页面（index.jsp）

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
    
    <%@taglib uri="/struts-tags" prefix="s"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    
    <html>
      <head>
        <title>struts2防止表单重复提交</title>
      </head>
    
      <body>
      <form action="test/login.action" method="post">
        
        <s:token/>
            姓名<input type="text" name="name" /><br>
           年龄<input type="text" name="age"/><br>
           <input type="submit" value="登陆" />
       </form>
      </body>
    </html>

二、下面该轮到建Action了（LoginAction）

package com.hulang.actions;
    
    import com.opensymphony.xwork2.ActionSupport;
    
    public class LoginAction extends ActionSupport{
        //如果不继承，重复提交不会有提示
    
        private String name;
        private int age;
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public int getAge() {
            return age;
        }
        public void setAge(int age) {
            this.age = age;
        }
        public String execute(){
            return "success";
        }
    }

三、注册Action

<?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="first" namespace="/test" extends="struts-default">
            <action name="login" class="com.hulang.actions.LoginAction">
                <result name="success">/welcome.jsp</result>
                
                <result name="invalid.token">/token.jsp</result>
                
                <interceptor-ref name="token"/>
                
                
                <interceptor-ref name="defaultStack"/>
            </action>
        </package>
    </struts>

四、提交成功跳转的视图（welcome.jsp）  
![这里写图片描述][SouthEast]  
五、发生重复提交跳转的视图（token.jsp）  
![这里写图片描述][SouthEast 1]  
到此，实例就做完了，结果如下

![这里写图片描述][SouthEast 2]  
如有疑问加群：511906138 私聊我！谢谢

[Link 1]: http://blog.csdn.net/leisure_life/article/details/57083523
[SouthEast]: https://img-blog.csdn.net/20170225165947639?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGVpc3VyZV9saWZl/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[SouthEast 1]: https://img-blog.csdn.net/20170225170036373?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGVpc3VyZV9saWZl/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[SouthEast 2]: https://img-blog.csdn.net/20170225164916368?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGVpc3VyZV9saWZl/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast