Jsp/Servlet

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VBScript

							<%@ page contentType="text/html; charset=GB2312" %>
<%@ page import="java.sql.*" %>
<%@ page language="java" %>
<%@ page import="java.util.*" %>
<%@ page import=" proj112.ISOtoGb2312  "%>
<html>
<head>
<title>
身份验证
</title>
</head>
<body bgcolor="#ffffff">
<%
String user=ISOtoGb2312.convert(request.getParameter("username"));
String pwd=ISOtoGb2312.convert(request.getParameter("password"));
String select=request.getParameter("id");
String url ="jdbc:odbc:dsn112";
String userName = "sa";
String password = "";
String URL="";
String sql="";
Connection conn = null;
try {
		Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                		} catch(ClassNotFoundException e) {
			out.println("加载驱动器类时出现异常");
		}
		try {
			 conn = DriverManager.getConnection(url, userName, password);
			//创建Statement语句
                        }
                catch(SQLException e) {
			out.println("连接数据库的过程中出现SQL异常<br>");
		}
			Statement stmt = conn.createStatement();
                        if(select.equals("student")){
			sql = "SELECT * FROM student where stu_id='"+user+"'and stu_password='"+pwd+"'";
                        URL="student.jsp";
                        }
                        else if(select.equals("admin")){
                         sql = "SELECT * FROM admin where name='"+user+"'and ad_password='"+pwd+"'";
                         URL="admin.jsp";
                         }
                         //使用executeQuery执行SQL查询语句
			ResultSet rs = stmt.executeQuery(sql);
                        if(rs.next()){
                          String a=rs.getString("stu_name");
                          request.getSession(true);
                          session.setAttribute("stu_name",a);
                          session.setAttribute("id",user);
                          response.sendRedirect(URL) ;}
                        else
                        response.sendRedirect("error.jsp") ;
%>
</body>
</html>

						