index.jsp:
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 <%@ taglib prefix="s" uri="/struts-tags"%> 3 <% 4 String path = request.getContextPath(); 5 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 6 %> 7 8 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 9 <html> 10 <head> 11 <base href="<%=basePath%>"> 12 13 <title>My JSP 'index.jsp' starting page</title> 14 <meta http-equiv="pragma" content="no-cache"> 15 <meta http-equiv="cache-control" content="no-cache"> 16 <meta http-equiv="expires" content="0"> 17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 18 <meta http-equiv="description" content="This is my page"> 19 <!-- 20 <link rel="stylesheet" type="text/css" href="styles.css"> 21 --> 22 </head> 23 24 <body> 25 <s:form action="token.action" theme="simple" > 26 用户名:<s:textfield name="username" size="20"/><br> 27 密码:<s:textfield name="password" size="20"/><br> 28 29 <s:token></s:token> 30 31 <s:submit value="提交"/> 32 </s:form> 33 </body> 34 </html>
welcome.jsp:
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib prefix="s" uri="/struts-tags"%> 4 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 5 <html> 6 <head> 7 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 8 <title>欢迎光临</title> 9 </head> 10 <body> 11 <s:property value="username"/>,欢迎光临<br/> 12 </body> 13 </html>
alert.jsp:
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <body> 10 不能重复提交表单 11 </body> 12 </html>
struts.xml:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE struts PUBLIC 3 "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" 4 "http://struts.apache.org/dtds/struts-2.3.dtd"> 5 6 <struts> 7 <constant name="struts.devMode" value="true"></constant> 8 <package name="struts" extends="struts-default"> 9 <action name="token" class="com.sunflower.action.Action"> 10 <result name="success">/welcome.jsp</result> 11 <result name="invalid.token">/alert.jsp</result> 12 13 <interceptor-ref name="token"></interceptor-ref> 14 <interceptor-ref name="defaultStack"></interceptor-ref> 15 </action> 16 </package> 17 </struts>
关键在struts.xml和表单中设置:
