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📄 dologin.java

📁 一个jsp的课程设计：电子商务网站
💻 JAVA
字号:
🔍 
/*
 * doLogin.java
 *
 * Created on 2007年11月14日, 下午10:08
 */

package dbpack;

import java.io.*;
import java.net.*;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.xml.ws.Response;

/**
 *
 * @author weiyunbo
 * @version
 */
public class doLogin 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 {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        String userid;
        String psw;
        boolean success=false;
        /* TODO output your page here
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet doLogin</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h1>Servlet doLogin at " + request.getContextPath () + "</h1>");
        out.println("</body>");
        out.println("</html>");
         */
        userid=request.getParameter("userid");
        psw=request.getParameter("psw");
        userid.replace("'","''");
        psw.replace("'","''");
        HttpSession session=request.getSession(true);
        Login login=(Login)session.getAttribute("login");
        
        dbConnect db=new dbConnect(); 
        try{
            db.rs=db.sat.executeQuery("select * from member where userid='"+userid+"'");
            while(db.rs.next()){
                if(db.rs.getString("password").equals(psw)){ 
                    login.userid=db.rs.getString("realname");   
                    session.setAttribute("cartVector",new java.util.Vector());
                    db.doClose();
                    success=true;
                }else{
                    db.doClose();
                    success=false;
                }
            }
        }catch(Exception e){
            db.doClose();
        }
                
        if(success){
            login.isLogin=true;            
            response.sendRedirect("index.jsp");
        }else{
            login.isLogin=false;
            out.println("<center><br>登录失败！请检查输入的用户名和密码是否正确</br></center>");
        }
        out.close();
    }
    
    // <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>
}

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