Struts1 之Hello Word

web.xml

<?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">
  <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>

sturts-config.xml

<?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>
  <data-sources />
  <form-beans>
    <!-- FormBean可以配置爲靜態FormBean與動態FormBean
        +   靜態FormBean
        |-  ActionForm
        |-  ValidatorForm
        |-  ValidatorActionForm
        +   動態FormBean
        |-  DynaActionForm
        |-  DynaValidatorForm
        |-  DynaValidatorActionForm
     -->
    <form-bean name="user" type="com.wj.pojo.User"></form-bean>

     <form-bean name="productForm" type="org.apache.struts.validator.DynaValidatorForm">
        <form-property name="productName" type="java.lang.String"></form-property>
        <form-property name="productPrice" type="java.lang.Double"></form-property>
        <form-property name="productDate" type="java.util.Date"></form-property>
        <form-property name="discription" type="java.lang.String"></form-property>
    </form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
    <!-- <action 
        path="/地址"                //攔截的地址   
        type=""                   //Action 具體地址
        parameter=""              //表示訪問Action方法的標識,如:method=deleteUser 將訪問deleteUser方法
        input=""                  //指定驗證錯誤返回的頁面
        validate="true"           //是否啓動輸入的效驗
        scope="request"
    >  
        <forward
            name="index"      //在Action中,ActionMappding.findForward("index")，用戶查找調轉
            path="/index.jsp" //跳轉頁面的具體地址
        />
    </action>
    -->

    <action path="/login" 
        input="/index.jsp"
        validate="true"
        scope="request"
        parameter="method"        
        type="com.wj.action.LoginAction"
    >   
        <forward name="tag" path="/tag.jsp"></forward>
        <forward name="error" path="/error.jsp"></forward>
    </action>

  </action-mappings>
  <message-resources parameter="com.wj.struts.ApplicationResources" />
</struts-config>

Action

package com.wj.action;

import java.util.ArrayList;
import java.util.List;

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

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import com.wj.pojo.User;


public class LoginAction extends DispatchAction{
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        System.out.println(request.getParameter("userName")+"  開始驗證登錄.");
        System.out.println("密碼爲[ "+request.getParameter("password")+" ]");
        System.out.println("LoginAction execute()");

        return super.execute(mapping,form,request,response);
    }

    public ActionForward checkLogin(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
    throws Exception {
        System.out.println("開始檢查用戶是輸入是否正確.");
        return mapping.findForward("error");
    }

    public ActionForward toTag(ActionMapping mapping,ActionForm form,
            HttpServletRequest request,HttpServletResponse response) throws Exception{
        List userList = new ArrayList();

        userList.add("張三");
        userList.add("李四");
        userList.add("王五");

        User user = new User();
        user.setAge(33);
        user.setName("趙六");
        userList.add(user);

        //設置 Bean到 request環境中
        request.setAttribute("userList", userList);
        //跳轉到 標籤庫頁面
        return mapping.findForward("tag");
    }
}

index.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 '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" mce_href="styles.css">
    -->
  </head>

  <body>
    <form action="login.do?method=checkLogin" method="post">
        <input name="userName"/>
        <input name="password" type="password"/>
        <input type="submit" value="登錄"/>
    </form>
    <hr/>
    <a href="login.do?method=toTag" mce_href="login.do?method=toTag"><h2>Struts1.x 標籤庫</h2></a>
  </body>
</html>