1 <%--
2 Created by IntelliJ IDEA.
3 User: SuSh1
4 Date: 2019/9/27
5 Time: 12:03
6 To change this template use File | Settings | File Templates.
7 --%>
8 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
9 <html>
10 <head>
11 <title>注册</title>
12
13 <style>
14 span{
15 color: red;
16 }
17 </style>
18 </head>
19 <body>
20 <form action="doUserLogin.jsp"method="post">
21
22 账号: <input type="text"name="userName"placeholder="请输入账号"><span>*</span><br/>
23 密码: <input type="password"name="password"placeholder="请输入密码"><span>*</span><br/>
24
25 <input type="submit"value="登录">
26 </form>
27 <%
28 String info = request.getParameter("info");
29 if(info !=null){
30 out.print(info);
31 }
32 Integer count = (Integer)application.getAttribute("count");
33 if(count==null){
34 //application中还没有count
35 application.setAttribute("count",1);
36 }else {
37 //application已有count
38
39 application.setAttribute("count",count+1);
40 }
41 Integer icount=(Integer)application.getAttribute("count");
42 out.print("页面已经访问"+icount+"次");
43
44 %>
45
46
47 </body>
48 </html>
客户端userLogin
1 <%@ page import="java.net.URLEncoder" %><%--
2 Created by IntelliJ IDEA.
3 User: SuSh1
4 Date: 2019/9/27
5 Time: 12:04
6 To change this template use File | Settings | File Templates.
7 --%>
8 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
9 <html>
10 <head>
11 <title>验证注册</title>
12 </head>
13 <body>
14 <%
15 request.setCharacterEncoding("UTF-8");
16 String userName = request.getParameter("userName");
17 String password = request.getParameter("password");
18
19 if(userName.equals("admin")&&password.equals("123")){
20 //转发
21 session.setAttribute("userName",userName);
22 Cookie cookie = new Cookie("userName",userName);
23 cookie.setPath("/");
24 response.addCookie(cookie);
25 request.getRequestDispatcher("LoginSuccess.jsp").forward(request,response);
26
27 }else{
28 //重定向
29 String info = "登录失败！";
30 info = URLEncoder.encode(info,"utf-8");
31 response.sendRedirect("userLogin.jsp?info="+info);
32 }
33 %>
34 <%
35
36
37 %>
38 </body>
39 </html>
服务器端doUserLogin
1 <%--
2 Created by IntelliJ IDEA.
3 User: SuSh1
4 Date: 2019/9/28
5 Time: 18:09
6 To change this template use File | Settings | File Templates.
7 --%>
8 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
9 <html>
10 <head>
11 <title>Title</title>
12 </head>
13 <body>
14 <%
15 String userName = (String) session.getAttribute("userName");
16 if(userName==null&&userName==""){
17 response.sendRedirect("userLogin.jsp");
18 }else{
19 %>
20 <h1>欢迎<%=userName%>登录成功</h1>
21 <%}
22
23 %>
24
25 </body>
26 </html>
登录成功界面
原文地址：https://www.cnblogs.com/lev1/p/11605334.html
时间： 2024-11-01 16:20:16