My first Struct experience

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My first Struct experience

标签（空格分隔）： struct

My first Struct experience
- 使用struct步骤
  - 第一个struct程序
- 3种配置文件的优先级

使用struct步骤

1.引入struct架包
2.配置web.xml,设置struct过滤器

<filter>  <filter-name>Structs2</filter-name>  <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>  </filter>  <filter-mapping>  <filter-name>Structs2<filter-name><url-pattern>/*</url-pattern>  </filter-mapping>

3.创建structs.xml 并引入dtd约束
解压struts2-core-2.3.1.jar，找到struts-2.3.dtd，打开
并复制代码

<!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd">

粘贴到你的structs.xml文件中

第一个struct程序

struts.xml注册action

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd"><struts><package name="loginDeal" namespace="/loginDeal" extends="struts-default"><action name="login" class="com.tang.actions.loginAction">    <result name="success">/welcome.jsp</result>    <result  name="false">/error.jsp</result></action></package></struts>

web.xml配置structs2

<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0"><filter><filter-name>structs2</filter-name><filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></filter><filter-mapping><filter-name>structs2</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>

loginAction.java

package com.tang.actions;public class loginAction {    private String name=null;    private String password=null;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public String execute(){        if("admin".equals(name)&&"admin".equals(password)){            return "success";        }else{            return "false";        }    }}

login.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%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 'loginTest.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>   <center>   <h1>登陆</h1><br>   <form action="loginDeal/login" method="POST">   name:<input type="text" name="name" /><br>   password:<input type="password" name="password"><br/>   <input type="submit" value="登陆" />    </form>   </center>  </body></html>

对于初学者经常犯的一些错误

*structs.xml文件放错地方，应该放在src目录下面
*form表单里面的input的name要与Actiond的属性名字要一致,不然接受不到表单数据

3种配置文件的优先级

web.xml>struts.properties>struts.xml

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