我认为每一门课程的入门都要从例子开始，脑中有概念的时候就会很容易上手，就像我一开始看
《证券投资分析》，不知所云，于是找来同学，领我入门，结果他给我举了好多例子，好了，
我终于有点能摸得着门了。
下面就以一个例子来入struts这个门：
第一步：建个包com.brj.strutsdemo
第二步：将struts的jar包导入（用myeclipse会快些）
第三步：写User.java类
===================================================
package com.brj.strutsdemo;
/**
* the simple object
*
* @author brj 2008-09-09
*
*/
public class User {
private String userName;
private String password;
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;
}
}
=================================================
第四步：写UserGenerator.java类
package com.brj.strutsdemo;
import java.util.ArrayList;
import java.util.List;
/**
* Generate some 'User' to be the test data
*
* @author brj 2008-09-09
*
*/
public class UserGenerator {
public static List<User> getUsers() {
List<User> list = new ArrayList<User>();
User user = null;
for (int i = 0; i < 6; i++) {
user = new User();
user.setUserName("admin" + i);
user.setPassword("brj" + i);
list.add(user);
}
return list;
}
}
=====================================================
第五步：写UserListAction.java
/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.brj.strutsdemo.action;
import java.util.List;
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.brj.strutsdemo.User;
import com.brj.strutsdemo.UserGenerator;
/**
* MyEclipse Struts
* Creation date: 09-08-2008
*
* XDoclet definition:
* @struts.action validate="true"
*/
public class UserListAction extends Action {
/*
* Generated Methods
*/
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
List<User> users = UserGenerator.getUsers();
request.setAttribute("users", users);
return mapping.findForward("list");
}
}
===========================================
第六步：在web.xml中写如下面的东西，
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.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>
<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>
=================================================
第七步：在struts-config.xml文件中写如下面的东西，
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
<data-sources />
<form-beans />
<global-exceptions />
<global-forwards />
<action-mappings >
<action path="/userList" type="com.brj.strutsdemo.action.UserListAction">
<forward name="list" path="/index.jsp"></forward>
</action>
</action-mappings>
<message-resources parameter="com.brj.strutsdemo.ApplicationResources" />
</struts-config>
=================================================================
第八步：写index.jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
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 'index.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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<c:if test="${users == null}">
<a href="userList.do">Show All User</a>
</c:if>
<table style="widht:500;">
<tr>
<th>List All User:</th>
</tr>
<tr>
<td>UserName</td>
<td>Password</td>
</tr>
<c:forEach items="${users }" var="user">
<tr>
<td>${user.userName }</td>
<td>${user.password }</td>
</tr>
</c:forEach>
</table>
</body>
</html>
================================================
第九步：没了，真的没了