struts2之防止表单重复提交

来源：互联网发布：古墓丽影9 mac 种子编辑：程序博客网时间：2024/04/29 23:09

struts.xml配置文件

<?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>      <!-- 默认的视图主题 -->    <constant name="struts.ui.theme" value="simple" />    <!-- struts2在防止表单重复提交的拦截中有2个，分别是：token，tokenSession。tokenSession继承token而来。          通常情况下，使用tokenSession客户端感觉会比较友好。 -->    <!-- 如果重复提交，会跳转到error.jsp页面 -->    <package name="person" namespace="/test" extends="struts-default">        <action name="token" class="com.ljq.action.PersonAction">            <interceptor-ref name="defaultStack" />            <interceptor-ref name="token" />            <!-- 如果重复提交，跳转到error.jsp页面 -->            <result name="invalid.token">/WEB-INF/page/error.jsp</result>             <result>/WEB-INF/page/message.jsp</result>        </action>        <action name="tokenSession" class="com.ljq.action.PersonAction">            <interceptor-ref name="defaultStack" />            <interceptor-ref name="tokenSession" />            <!-- 如果重复提交，不会跳转到error.jsp页面 -->            <result name="invalid.token">/WEB-INF/page/error.jsp</result>             <result>/WEB-INF/page/message.jsp</result>        </action>    </package></struts>

PersonAction类

package com.ljq.action;import java.util.ArrayList;import java.util.List;public class PersonAction {        private String name;    @SuppressWarnings("unchecked")    //观看控制台    //如果token生效则不会在控制台输出name的值，而会输出如下警告： 2011-3-14 20:45:32 com.opensymphony.xwork2.util.logging.commons.CommonsLogger     //warn 警告: Form token EDZ4S96RNDN5VD8B1CQTK6FTHIJUPC66 does not match the session token null.    public String execute() {        List ls = new ArrayList();        ls.add(name);        for (int i = 0; i < ls.size(); i++) {            System.out.println(ls.get(i));        }        return "success";    }        public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

index.jsp表单页面

<%@ 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>防止表单重复提交</title>    <meta http-equiv="pragma" content="no-cache">    <meta http-equiv="cache-control" content="no-cache">    <meta http-equiv="expires" content="0">     </head>    <body>      <!-- 防止表单重复提交，记得在form表单里填上<s:token></s:token>      -->      <!-- action="token"、action="tokenSession" -->      <s:form action="token" namespace="/test" method="post">          姓名:<s:textfield name="name"/><s:token></s:token>          <input type="submit" value="发送"/>      </s:form>  </body></html>

message.jsp返回成功页面

<%@ 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>My JSP 'index.jsp' starting page</title>    <meta http-equiv="pragma" content="no-cache">    <meta http-equiv="cache-control" content="no-cache">    <meta http-equiv="expires" content="0">     </head>    <body>     <s:property value="name"/><br/>     <%=new Date() %>  </body></html>

error.jsp表单重复提交提示页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">        <title>My JSP 'error.jsp' starting page</title>        <meta http-equiv="pragma" content="no-cache">    <meta http-equiv="cache-control" content="no-cache">    <meta http-equiv="expires" content="0">        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">    <meta http-equiv="description" content="This is my page">    <!--    <link rel="stylesheet" type="text/css" href="styles.css">    -->  </head>    <body>      您已经提交了表单，请不要重复提交。  </body></html>