loginservlet.java

这是中国移动的一个管理系统

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package com.mobile.serlvet;

import com.mobile.mode.OperatorManager;
import java.io.*;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 *
 * @author st
 */
public class LoginServlet extends HttpServlet {
   
    /** 
    * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
    * @param request servlet request
    * @param response servlet response
    */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
      request.setCharacterEncoding("gbk");
     String id = request.getParameter("operator_id");  
     String pwd = request.getParameter("passwords");
     
     OperatorManager manager = OperatorManager.getInstance();
     int rs = manager.login(id, pwd);
     String message = "";
     
     if(rs == 1){
       message = "";
     }else if(rs == 0){
       message = "密码错误";
     }else{
       message = "用户不存在";
     }
     
     //.....................................
     //转
     if(message.equals("")){
          boolean is = OperatorManager.getInstance().isAdmin(id);
          if(is == true){
              request.getSession(true).setAttribute("admin", "admin");
              response.sendRedirect("main.jsp");
          }else{
           response.sendRedirect("main.jsp");
          }
     }else{
      //index.jsp
      request.setAttribute("error", message);
      request.getRequestDispatcher("index.jsp").forward(request, response);
     }
} 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
    * Handles the HTTP <code>GET</code> method.
    * @param request servlet request
    * @param response servlet response
    */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
    * Handles the HTTP <code>POST</code> method.
    * @param request servlet request
    * @param response servlet response
    */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
    * Returns a short description of the servlet.
    */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}