<%@ page language="java" import="java.util.*,com.mongodb.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"https://www.jb51.net/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="https://www.jb51.net/<%=basePath%>"> <title>My JSP 'login_action.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link type="text/css" href="https://www.jb51.net/styles.css"> --> </head> <body> <% response.setContentType("text/html;charset=utf-8"); //确保显示的汉字信息以正确编码方式显示 request.setCharacterEncoding("utf-8"); //确保获取的汉字信息以正确编码方法获取 String userName=(String)request.getParameter("username"); //获取登录页面用户名 String passWord=(String)request.getParameter("password");//获取登陆页面密码 String checkBox = request.getParameter("save_password");//获取登陆页面记住密码选择框属性值 boolean login_test = false; //设定登陆布尔值，若用户名和密码成功匹配，则为true try{ // 连接到 mongodb 服务 MongoClient mongoClient = new MongoClient( "localhost" , 27017 ); //此处采用无用户名和密码验证方式登陆 @SuppressWarnings("deprecation") DB db = mongoClient.getDB( "library" ); //连接到数据库library DBCollection coll = db.getCollection("userInfo"); //获取library数据库中集合userInfo System.out.println("Collection userInfo selected successfully"); DBCursor cursor = coll.find(); //查询集合userInfo中文档信息 int i=1; while (cursor.hasNext()) { //检索集合userInfo中所有文档信息 System.out.println("userInfo Document: "+i); DBObject show = cursor.next(); System.out.println(show); @SuppressWarnings("rawtypes") Map show1 = show.toMap(); //将检索结果show(Bson类型)转换为Map类型 String toname = (String)show1.get("username"); //提取Map中字段名为username的属性值 String topassword = (String)show1.get("password"); //提取Map中字段名为password的属性值 if(toname.equals(userName) && topassword.equals(passWord)){ //将从数据库中获取的用户名和密码与表单中获取的数据进行验证，匹配成功则使login_test值为true System.out.println("登陆成功！！！！！"+"username:"+toname+" password:"+topassword); //request.getRequestDispatcher("welcome.jsp").forward(request, response); login_test = true; } System.out.println(show1.get("username")); i++; } }catch(Exception e){ System.err.println( e.getClass().getName() + ": " + e.getMessage() ); } if(login_test) { if ("save".equals(checkBox)) { //Cookie存取时用URLEncoder.encode进行编码(PS:读取时URLDecoder.decode进行解码) String name1 = java.net.URLEncoder.encode(userName,"UTF-8"); //创建两个Cookie对象 Cookie nameCookie = new Cookie("username", name1); //设置Cookie的有效期为3天 nameCookie.setMaxAge(60 * 60 * 24 * 3); String pwd = java.net.URLEncoder.encode(passWord,"UTF-8"); Cookie pwdCookie = new Cookie("password", pwd); pwdCookie.setMaxAge(60 * 60 * 24 * 3); response.addCookie(nameCookie); response.addCookie(pwdCookie); } // request.getRequestDispatcher("welcome.jsp").forward(request, response); response.sendRedirect("welcome.jsp"); } else{ response.sendRedirect("login_Fail.jsp"); // request.getRequestDispatcher("loginFail.jsp").forward(request, response); } %> </body> </html>
登录失败login_Fail.jsp页面代码如下：