openmessage.java

一个小型的BBS系统

package com.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;

import bean.dbwrite.DBWrite;
import bean.readdb.*;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletContext;

/**
 * Servlet implementation class for Servlet: OpenMessage
 *
 */
 public class OpenMessage extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
   static final long serialVersionUID = 1L;
   
    /* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	public OpenMessage() {
		super();
	}   	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub	
		String url;
		ServletContext sc = getServletContext();
		
		String id =new String(request.getParameter("id").getBytes("iso-8859-1"),"GB2312");
		String time =new String(request.getParameter("action").getBytes("iso-8859-1"),"GB2312");
		DBRead dbr = new DBRead();
		Vector message = new Vector();
		message = dbr.DBReader_OneMessage(id,time);//读取具体消息内容
		DBWrite dbw = new DBWrite();
		dbw.UpdateMessageView(id, time);//将view置1
		
		request.setAttribute("message", message);//加载到request中，回传到JSP中显示
		
		url="/viewmessage.jsp";
		RequestDispatcher rd = sc.getRequestDispatcher(url);
		rd.forward(request, response);
	}
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}   	  	    
}