struts1.x心得2--第一个struts案例分析
最重要的文件：struts-config.xml配置文件<?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 name="loginFrom" type=""></form-beans> <action-mappings> <action path="/login" name="loginFrom" type=""> <forward name="loginSuccess" path="/loginSuccess.jsp"></forward> <forward name="loginFailure" path="/loginFailure.jsp"></forward> </action> </action-mappings></struts-config> Web.xml配置文件<?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>登录界面 login.jsp<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>My JSP 'login.jsp' starting page</title> </head> <body> <!-- 这里叫login.do是因为web.xml配置中servlet对所有.do文件起作用，struts-config.xml中action的名字叫login --> <form action="<%=request.getContextPath()%>/login.do" method="post"> username ： <input type="text" name="username"><br><br> password ： <input type="text" name="password"><br><br> <input type="submit" value="login"> </form> </body></html> 登录成功后的界面loginSuccess和失败后的界面loginFailure在这里不再赘述，就是输出成功或失败的两句话。From文件，相当于javabeanpackage itcast.family.cn;import org.apache.struts.action.ActionForm;public class LoginFrom extends ActionForm {private String userName = null;private String password = null;public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}Action文件，相当于servletpackage itcast.family.cn;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;public class LoginAction extends Action {//execute是现在struts2常用方法，以前老版本的叫做：perform@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {//第一步强制转换为自己的类LoginFrom loginFrom = (LoginFrom)form; //业务逻辑处理String returnURLKeyWord = null;if(loginFrom.getUserName().equals("yangkai")){returnURLKeyWord ="loginSuccess";}else{returnURLKeyWord ="loginFailure";}//跳转关键字return mapping.findForward(returnURLKeyWord);}}