loginuser.java

一个很好的BBS论坛项目

package com.ibm.control;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;

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.ibm.common.DBConnection;
import com.ibm.dto.UsersDTO;
import com.ibm.service.UsersService;
import com.ibm.util.MD5;
import com.ibm.vo.UsersVO;


public class LoginUser extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public LoginUser() {
		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 {

			doPost(request,response);
	}

	/**
	 * 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 {

		response.setContentType("text/html;charset=gbk");
		PrintWriter out = response.getWriter();
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		
		/*MD5 md5 = new MD5();
		password=md5.getMD5ofStr(password);  */
		UsersDTO udto = UsersDTO.getInstance();
		udto.setUsername(username);
		udto.setPassword(password);
		
		Connection conn = DBConnection.getInstance().getConnection();
		
		UsersVO uvo1 = UsersService.getInstance().queryUser(conn, udto);
		System.out.println(uvo1.getUid());
		HttpSession session = request.getSession();
		session.setAttribute("uvo1", uvo1);
		if(uvo1 != null) 
		{
			System.out.println("登入成功");
			response.sendRedirect("merge.jsp");
		}
		else
		{
			System.out.println("登入失败");
			response.sendRedirect("merge.jsp");
		}
		
	}

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

}