strsuts2使用标签防止表单重复提交
案例：
PersonAction.java:
package blog.action;
public class PersonAction {
private String username;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String execute(){
return "success";
}
}
stsuts.xml:
<?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>
<package name="token" namespace="/person" extends="struts-default">
<action name="token" class="blog.action.PersonAction" method="execute">
<interceptor-ref name="defaultStack"></interceptor-ref>
<interceptor-ref name="token"></interceptor-ref>
<result name="invalid.token">/index.jsp</result>
<result name="success">/WEB-INF/page/message.jsp</result>
</action>
</package>
</struts>
index.jsp:
<%@ 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 '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:form action="token" namespace="/person" method="post">
姓名：<s:textfield name="username"></s:textfield><br/>
<s:token></s:token>
<input type="submit" value="提交"/>
</s:form>
</body>
</html>
message.jsp:
<%@ 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 '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="username"/>
<br/>
<%= new Date() %>
</body>
</html>
