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struts5:s标签，防止表单重复提交的token

 
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1.jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
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 '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">   
 <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>
   <s:form action="userAction" name="" method="post" >
  <div>
   用户名:<s:textfield name="uname"></s:textfield>
  </div>
  <div>
   密码:<s:password name="upwd" ></s:password>
  </div>
  <div>
   性别:<s:radio list="#{1:'男',2:'女'}" name="sex"></s:radio>
  </div>
  <div>
   爱好:
    <s:checkboxlist list="#{1:'看美女',2:'吃饭',3:'睡觉',4:'睡觉'}" name="hobby"></s:checkboxlist>
  </div>
  <div>
   城市:
    <s:select list="#{'看美女':'看美女','吃饭':'吃饭','睡觉':'睡觉','睡觉':'睡觉'}" name="city"></s:select>
  </div>
  <div>
   介绍:
    <s:textarea name="intro" cols="30" rows="5"></s:textarea>
  </div>
  <div>
   靓照:
    <s:file name="img"></s:file>
    
  </div>
  <div>
   <s:submit value=" 提 交 "></s:submit>
   <s:reset value=" 重 置 "></s:reset>
  </div>
  <s:token></s:token><%-- 防止表单重复提交，这句话很重要--%>
  
</s:form>
  </body>
</html>

 

 

2.struts.xml配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
 <constant name="struts.ui.theme" value="simple"></constant>
 
 <package name="test" namespace="" extends="struts-default">
  
  <interceptors>
   <interceptor-stack name="myinterstack">
    <interceptor-ref name="defaultStack"></interceptor-ref>
    <interceptor-ref name="token"></interceptor-ref>
   </interceptor-stack>
  </interceptors>
  
  
  <action name="userAction" class="com.action.UserAction">
   <interceptor-ref name="myinterstack"></interceptor-ref>
   <result name="success">/success.jsp</result>
   <result name="invalid.token">/index.jsp</result><!-- 这里invalid.token的意思是当表单重复提交之后 -->
  </action>
  
 </package>
</struts>   

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| struts03:拦截器、过滤器与拦截器的区别、 ...
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