loginservlet.java

一个基于java工厂模式的 的实现

/*
 * LoginServlet.java
 *
 * Created on 2007年4月16日, 上午10:57
 */

package com.ebuy.web.servlets;

import com.ebuy.businessrule.CustomerRule;
import com.ebuy.common.rule.IRule;
import com.ebuy.entities.CustomerEntity;
import java.io.*;
import java.net.*;

import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

/**
 *
 * @author Administrator
 * @version
 */
public class LoginServlet extends javax.servlet.http.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
    {
        response.setContentType("text/html");
        String name=request.getParameter("username");
        String key=request.getParameter("userkey");
        String inputcode=request.getParameter("validatecode");
        String code=request.getSession().getAttribute("code").toString();
        String msg=null;
        if(!code.equalsIgnoreCase(inputcode))
        {
            msg="<script>window.alert('验证码错误');window.location='../login.jsp'</script>";
            response.getWriter().write(msg);
            return;
        }
        IRule rule=new CustomerRule();
        Object obj=rule.findByPK(name,key);
        if(obj!=null)
        {
            CustomerEntity c=(CustomerEntity)obj;
            request.getSession().setAttribute("customer",c);
            //msg="<script>window.alert('欢迎您:"+c.getRealname()+"');window.location='../index.jsp';</script>";
            Object objurl=request.getSession().getAttribute("returnURL");
            if(objurl!=null)
            {
                response.sendRedirect(objurl.toString());
            }
            else
            {
                response.sendRedirect("../index.jsp");
            }
        }
        else
        {
            msg="<script>window.alert('用户名或者密码错误');window.location='../login.jsp';</script>";
            response.getWriter().write(msg);                  
        }
         
    }
    
// <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);
    }
    
    
}