7days

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struts 1 流程

 

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

   <servlet>
      <servlet-name>action</servlet-name>
      <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
      <init-param>
        <param-name>config</param-name>
        <param-value>/WEB-INF/struts-config.xml</param-value>
      </init-param>
      <load-on-startup>0</load-on-startup>
   </servlet>
    <servlet-mapping>
       <servlet-name>action</servlet-name>
       <url-pattern>*.do</url-pattern>
    </servlet-mapping> 
</web-app>

 

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>
  <form-beans>
    <form-bean name="loginForm" type="com.days7.web.form.LoginForm"></form-bean>
  </form-beans>


  <action-mappings>
  
    <action path="/login"  name="loginForm" scope="request" type="com.days7.web.LoginAction">
       <forward name="success" path="/success.jsp"></forward>
     <forward name="error" path="/error.jsp"></forward>
    </action>   
    
  </action-mappings>


</struts-config>

 

login.jsp 
<%@ page language="java"  pageEncoding="UTF-8" contentType="text/html; charset=utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>    
    <title></title>
  </head>
  <body>
  
  <br>
      <form name="loginForm" method="post" action="${pageContext.request.contextPath}/login.do">
         <table border="1">
           <tr>
              <td>用户名:</td>
              <td><input type="text" name="username" value="aa"></td>
           </tr>
           <tr>
              <td>密码:</td>
              <td><input type="password" name="psw" value=""></td>
           </tr>
         <tr>
              <td>&nbsp;</td>
              <td><input type="submit" value="登陆"></td>
           </tr>
         </table>
       </form>
  </body>
</html>

 

 

 

 

LoginForm 
package com.days7.web.form;

import org.apache.struts.action.ActionForm;

public class LoginForm extends ActionForm {
    private String username;
    private String psw;
    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPsw() {
        return psw;
    }

    public void setPsw(String psw) {
        this.psw = psw;
    }
}

 

 

LoginAction 
package cn.itcast.web.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.days7.web.form.LoginForm;

public class LoginAction  extends Action{
    
    
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        LoginForm loginForm=(LoginForm)form;
        
        String username=request.getParameter("username");    
        
           if("sa".equals(loginForm.getUsername())){
           return mapping.findForward("success");
       }else{
           return mapping.findForward("error");
       }
    }

}

 

 

 

 

 服务启动后，载入web.xml，依据配置实例化ActionServlet,并载入struts-config.xml。当用户发出请求后（以*.do)结尾，ActionServlet截获请求并根据请求路径查找struts-config.xml中action的path。根据对应action中的name属性找到formbean，封装表单数据到formbean中；同时封装action中各个属性到actionmapping中；实例化type属性对应的action，执行execute方法，将封装好的frombean和actionmapping作为execute参数。

posted on 2010-06-26 21:29  7days  阅读(148)  评论(0)  编辑  收藏  举报