文件名称：登陆jsp数据库验证的代码
文件大小：3KB
文件格式：JSP
更新时间：2018-05-18 14:50:18
jsp 数据库mysql 分角色登陆
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import="java.sql.*" %>
普通话水平测试报名系统
<% //接收用户提交的参数 String username=request.getParameter("uname"); String userpassword=request.getParameter("upassword"); String userjb=request.getParameter("userjb"); //设置一个变量保存登录状态，ture表示登录成功，false表示登录失败 boolean flag=true; %> <% String driverclass="com.mysql.jdbc.Driver"; String url="jdbc:mysql://localhost:3306/atao"; String uname="root"; String upass="958672"; Connection conn=null; PreparedStatement stmt=null; ResultSet rs=null; Class.forName(driverclass); conn=DriverManager.getConnection(url,uname,upass); if(userjb.equals("1")) {stmt=conn.prepareStatement("select * from users where user_id=? and userpass=? and role=?"); stmt.setString(1,username); stmt.setString(2,userpassword); stmt.setString(3,userjb); rs=stmt.executeQuery(); if(rs.next()) { flag=false; } if(flag){ %> <% } else{ request.setCharacterEncoding("UTF-8"); session.setAttribute("uname",rs.getString(1)); session.setAttribute("upassword",rs.getString(2)); session.setAttribute("userjb",rs.getString(3)); response.sendRedirect("sgly/gg-index.jsp"); rs.close(); stmt.close(); conn.close(); } } if(userjb.equals("2")) {stmt=conn.prepareStatement("select * from xxwyb where xxwy_id=? and password=? and role=?"); stmt.setString(1,username); stmt.setString(2,userpassword); stmt.setString(3,userjb); rs=stmt.executeQuery(); if(rs.next()) {session.setAttribute("id",rs.getString(1)); session.setAttribute("pd",rs.getString(7)); flag=false; } if(flag){ %> <% } else{ request.setCharacterEncoding("UTF-8"); session.setAttribute("uname",rs.getString(1)); session.setAttribute("upassword",rs.getString(2)); session.setAttribute("userjb",rs.getString(3)); response.sendRedirect("sxxwy/xx-ym.jsp"); rs.close(); stmt.close(); conn.close(); } } if(userjb.equals("0")){ %> <% } %>