表单重复提交

小鱼儿 2022-06-13 14:23 319阅读 0赞

一、阻止表单重复提交  
在表单提交页面写上<s:token/>  
<s:form action="add" method="post">  
    <s:token />  
    <s:textfield name="userName" label="用户名"></s:textfield><br/>  
    <s:password name="password" label="密码"></s:password><br/>  
    <s:submit />  
</s:form>  
   
  
 在struts.xml配置文件中相应的action上配置拦截器  
<action name="\*" class="tutorial.UploadFiles" method="\{1\}">  
<interceptor-ref name="token"></interceptor-ref>  
<result name="filesShow">/filesShow.jsp</result>  
  
二、可以跳转的表单重复提交  
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>  
  
<constant name="struts.ui.theme" value="simple" />  
  
  
<package name="person" namespace="/test" extends="struts-default">  
<action name="token" class="com.ljq.action.PersonAction">  
<interceptor-ref name="defaultStack" />  
<interceptor-ref name="token" />  
  
<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" />  
  
<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>  
  
  
<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">  
  
</head>  
  
<body>  
您已经提交了表单，请不要重复提交。  
</body>  
</html>