jsp开发教程之 仿MOP论坛 三（帖子列表-下）

package com.axbbs.bo; 
import java.io.IOException; 
import java.io.PrintWriter; 
import java.util.ArrayList; 

import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import javax.servlet.http.HttpSession; 

import com.axbbs.Dao.GetPostListDAO; 
import com.axbbs.po.PostPo; 

/** 
* @程序编写 阿汐 
* @版本 1.0 
* @说明 仿wc的jsp版本小论坛 
* @本模块是用于获取帖子列表信息的Servlet类 
* @并且功能并不需要太多，因此本版本没有采用传统意义上的MVC开发模式，而是针对 
* @vo,bo类进行了精简，用po类来共用vo类,用servlet类来共用bo类,很奇怪的开发模式 
* @日期 2008.09.01 
* 
*/ 
public  class GetPostsList  extends HttpServlet { 

     /** 
  * Constructor of the object. 
  */ 
     public GetPostsList() { 
   super(); 
    } 

     /** 
  * Destruction of the servlet. <br> 
  */ 
     public  void destroy() { 
   super.destroy();  // Just puts "destroy" string in log 
   // Put your code here 
    } 

     /** 
  * The doGet method of the servlet. <br> 
  * 
  * This method is called when a form has its tag value method equals to get. 
  *  
  * @param request the request send by the client to the server 
  * @param response the response send by the server to the client 
  * @throws ServletException if an error occurred 
  * @throws IOException if an error occurred 
  */ 
     public  void doGet(HttpServletRequest request, HttpServletResponse response) 
       throws ServletException, IOException { 

  response.setContentType( "text/html"); 
  PrintWriter out = response.getWriter(); 
   //创建一个集合，用来存储帖子列表的各种信息 
  ArrayList list =  new ArrayList(); 
   //创建DAO对象 
  GetPostListDAO gpld =  new GetPostListDAO(); 
   //将DAO执行的ViewList方法所返回的帖子列表信息赋值给list 集合对象 
  list=gpld.ViewList(); 
   //创建session对象以期将帖子列表信息在页面上显示 
  HttpSession session = request.getSession(); 
   //设置session viewlist的属性为list对象 
  session.setAttribute( "viewList", list); 
   //页面跳转到menu.jsp，也就是帖子列表显示的页面 
  response.sendRedirect( "menu.jsp"); 
  out.flush(); 
  out.close(); 
    } 

     /** 
  * The doPost method of the servlet. <br> 
  * 
  * This method is called when a form has its tag value method equals to post. 
  *  
  * @param request the request send by the client to the server 
  * @param response the response send by the server to the client 
  * @throws ServletException if an error occurred 
  * @throws IOException if an error occurred 
  */ 
     public  void doPost(HttpServletRequest request, HttpServletResponse response) 
       throws ServletException, IOException { 
      doGet(request, response); 
    } 

     /** 
  * Initialization of the servlet. <br> 
  * 
  * @throws ServletException if an error occure 
  */ 
     public  void init()  throws ServletException { 
   // Put your code here 
    } 

}