• Struts2HelloWorld


    配置文件主要有

    Struts.xml

    web.xml

    其中Stuts.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 
     8     <constant name="struts.devMode" value="true" /><!--true表示现在为开发模式 -->
     9     <!-- 即修改配置不需要重启服务器 -->
    10     <package name="default" namespace="/" extends="struts-default">
    11         <action name="hello">
    12             <!-- result 即Action处理后返回给用户的师徒资源,下面配置了一个result -->
    13             <!-- result不填写任何属性时,默认触发条件为SUCCESS -->
    14             <result>/Hello.jsp</result>
    15         </action>
    16     </package>
    17 
    18 
    19 </struts>

    Web.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <web-app version="2.5" 
     3     xmlns="http://java.sun.com/xml/ns/javaee" 
     4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     5     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
     6     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
     7   <display-name></display-name>    
     8 
     9       <!-- 加载Struts 2的核心控制器 用来对事件作出处理 -->
    10       <filter>
    11         <filter-name>struts2</filter-name>
    12         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    13     </filter>
    14     <!-- 使用通配符/*来拦截所有的URL请求,保证用户请求都被Struts2截获 -->
    15     <filter-mapping>
    16         <filter-name>struts2</filter-name>
    17         <url-pattern>/*</url-pattern>
    18     </filter-mapping>
    19 
    20 </web-app>

    Hello.jsp

     1 <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
     2 <%
     3 String path = request.getContextPath();
     4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
     5 %>
     6 
     7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
     8 <html>
     9   <head>
    10     <base href="<%=basePath%>">
    11     
    12     <title>Struts2</title>
    13     <meta http-equiv="pragma" content="no-cache">
    14     <meta http-equiv="cache-control" content="no-cache">
    15     <meta http-equiv="expires" content="0">    
    16     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    17     <meta http-equiv="description" content="This is my page">
    18     <!--
    19     <link rel="stylesheet" type="text/css" href="styles.css">
    20     -->
    21   </head>
    22   
    23   <body>
    24     Hello Struts2. <br>
    25   </body>
    26 </html>

    当向浏览器输入地址时,根据域名进入package搜索对应action.而后执行result中相应的result

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  • 原文地址:https://www.cnblogs.com/elleniou/p/2724334.html
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