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struts1是WEB程序MVC分层架构中的C，属于控制层，主要进行处理用户的请求，基于请求驱动。
获取用户的请求地址并将表单中的数据封装到Form 对象后交给Action进行处理。
在Action中进行条用业务层处理具体的请求后将结果通过ActionMapping封装跳转地址返回给用户。
struts1是对servlet的再次封装，使得更加灵活高效。下面以一个登录的实例讲解struts的开发过程。
1.使用MyEclipse add Struts 1.X 会自动加入jar包和web.xml配置文件信息
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name /> <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> <init-param> <param-name>debug</param-name> <param-value>3</param-value> </init-param> <init-param> <param-name>detail</param-name> <param-value>3</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> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
简单demo 只需要创建一个Action
2.LoginAction
package com.yourcompany.struts.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.yourcompany.struts.form.LoginActionForm;
public class LoginAction extends Action{
public ActionForward execute(ActionMapping mapping,ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
String path = "error";
LoginActionForm loginActionForm = (LoginActionForm) form;
System.out.println(loginActionForm);
String userName = request.getParameter("userName");
String passWord = request.getParameter("passWord");
if(null != userName && "admin".equals(userName) && null != passWord && "admin".equals(passWord)){
path = "success";
request.setAttribute("userName", userName);
}else{
path = "error";
}
return mapping.findForward(path);
}
}
3.struts-config.xml 配置内容
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd"> <struts-config> <action-mappings> <action path="/login" type="com.yourcompany.struts.action.LoginAction" scope="request"> <forward name="success" path="/jsp/loginSuccess.jsp"></forward> <forward name="error" path="/jsp/loginError.jsp"></forward> </action> </action-mappings> </struts-config>
4.login页面
<%@ 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 ‘login.jsp‘ starting page</title> </head> <body> <h1>登陆页面</h1> <hr> <form action="<%=path %>/login.do" method="post" > userName:<input id="userName" name="userName" type="text" /><br> passWord:<input id="passWord" name="passWord" type="password" /><br> <input type="submit" id="submit" name="submit" value="submit" /> </form> </body> </html>
5.loginsuccess 页面
<%@ 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 ‘loginSuccess.jsp‘ starting page</title>
</head>
<body>
<h1>欢迎[<%=request.getAttribute("userName") %>]
Success
</h1>
</body>
</html>
6.loginerror 页面
<%@ 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 ‘loginError.jsp‘ starting page</title> </head> <body> <h1>登陆失败了 </h1> </body> </html>
简单的不得了。熟悉一下，下个项目要用Struts1 二次开发。最基础的好简单。但是配置文件内容都好多好多
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原文地址：http://my.oschina.net/xshuai/blog/388877
