📄 do_login.jsp

📁 一个在线售票系统
💻 JSP
字号:
<%@ page language="java" import="java.sql.*" contentType="text/html;charset=gb2312"%>
<jsp:useBean id="search" class="com.db.Common" scope="page"/>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    
    <title>登录页面</title>
    
	<meta http-equiv="content-type" content="text/html; charset=gb2312">
    <link rel="stylesheet" href="../css/mm_lodging1.css" type="text/css">
    
  </head>
  <% 
    request.setCharacterEncoding("gb2312");
    String username=request.getParameter("username");
    String password=request.getParameter("password");
    String login_type=request.getParameter("login_type");
    //String sql="";
    ResultSet rs;
    if(login_type.equals("user"))
    {
       rs=search.getResultSetBySql("select * from userinf where username='"+username+"' and password='"+password+"'");
       if(rs.next())
       {
          session.setAttribute("isLogin","OK");
          session.setAttribute("login_type","user");
          session.setAttribute("user",username);
          %>
          <jsp:forward page="../user/index.jsp"/>
          <%
       }
       else
       {
          %>
          <jsp:forward page="../login/login.html"/>
          <%
       }
    }
    else if(login_type.equals("admin"))
    {
       rs=search.getResultSetBySql("select * from admin where admin_name='"+username+"' and password='"+password+"'");
       if(rs.next())
       {
          session.setAttribute("isLogin","OK");
          session.setAttribute("login_type","admin");
          session.setAttribute("admin_name",username);
          %>
          <jsp:forward page="../admin/index.jsp"/>
          <%
       }
       else
       {
          %>
          <jsp:forward page="../login/login.html"/>
          <%
       }
    }
    else
    {
       rs=search.getResultSetBySql("select * from system_admin where system_admin_name='"+username+"' and password='"+password+"'");
       if(rs.next())
       {
          session.setAttribute("isLogin","OK");
          session.setAttribute("login_type","system_admin");
          session.setAttribute("system_admin",username);
          %>
          <jsp:forward page="../system_admin/index.jsp"/>
          <%
       }
       else
       {
          %>
          <jsp:forward page="../login/login.html"/>
          <%
       }
    }
    
  %>
  <body>
    
  </body>
</html>
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