标签：String 登录 学习 jsp nbsp JSP password 页面
session/cookie
检查页面check.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ page import="java.net.URLDecoder" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-utf-8">
<title>check</title>
</head>
<body>
<form method="post" action="">
<%
String id=(String)session.getAttribute("id");
String password=(String)session.getAttribute("password");
String name=request.getParameter("id");
session.setAttribute("name", name);
String password1=request.getParameter("password");
session.setAttribute("password", password1);
if(id.equals(name)&&password1.equals(password))
{ response.sendRedirect("success.jsp");}
else
response.sendRedirect("error.jsp");
if (id.equals("linxiao") && password.equals("12138"))
{
Cookie nameCookie = new Cookie("name", id);
Cookie passwordCookie = new Cookie("password", password);
nameCookie.setPath(request.getContextPath() + "/");
passwordCookie.setPath(request.getContextPath() + "/");
String rememberme = request.getParameter("rememberme");
if (rememberme.equals("on"))
{
nameCookie.setMaxAge(7 * 24 * 60 * 60) ;
passwordCookie.setMaxAge(7 * 24 * 60 * 60);
}
else {
nameCookie.setMaxAge(0);
passwordCookie.setMaxAge(0);
}
response.addCookie(nameCookie);
response.addCookie(passwordCookie);
}
%>
</body>
</html>错误页面error.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录失败</title>
<style>
#a {
width: 360px;
padding: 8% 0 0;
margin: auto;
}
</style>
</head>
<body>
<div id="a">
<h1 align="center">
登录失败
</h1>
<h2 align="center">请检查用户名或密码是否正确</h2>
<h3 align="center"><a href="login.jsp" style="color:#FAAF46 font-size:10px">返回登录页面</a></h3>
</div>
</body>
</html>登录页面login.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ page import="java.net.URLDecoder" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-utf-8">
<title>登录</title>
<style>
#a {
width: 360px;
padding: 8% 0 0;
margin: auto;
}
</style>
</head>
<body>
<div id="a">
<%
String user = "";
String pass = "";
String checked = "";
Cookie[] cookies = request.getCookies();
if (cookies != null && cookies.length > 0) {
for (int i = 0; i < cookies.length; i++) {
Cookie cookie = cookies[i];
if ("name".equals(cookie.getName())) {
user = URLDecoder.decode(cookie.getValue(), "utf-8");
checked = "checked";
}
if ("password".equals(cookie.getName())) {
pass = cookie.getValue();
}
}
}
%>
<h1>登录界面</h1>
<form action="check.jsp" method="post">
账号: <input type="text" name="id" value="<%=user%>" /><br><br>
密码: <input type="password" name="password" value="<%=pass%>" /><br><br>
<input type="checkbox" name="rememberme" checked="<%=checked%>" />记住我
<input type="submit" name="login" value="登录" /><br><br>
没有账号？ <a href="signup.jsp">注册账号</a>
</form>
</div>
</body>
</html>注册页面signup.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>账号注册</title>
</head>
<style>
#a {
width: 360px;
padding: 8% 0 0;
margin: auto;
}
</style>
<body>
<div id="a">
<h1>注册账号</h1>
<form action="signupsuccess.jsp" method="post">
账 号:
<input type="text" name="id">
<br>
<br>
密 码:
<input type="password" name="password">
<br>
<br>
<input type="submit" value="注册">
</form>
</div>
</body>
</html>注册成功页面signupsuccess.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>注册成功</title>
</head>
<style>
#a {
width: 360px;
padding: 8% 0 0;
margin: auto;
}
</style>
<body>
<div id="a">
<form action="check.jsp" method="post">
<% request.setCharacterEncoding("UTF-8");
String id=request.getParameter("id");
session.setAttribute("id", id);
String name=request.getParameter("name");
session.setAttribute("name", name);
String password=request.getParameter("password");
session.setAttribute("password", password);
%>
恭喜您注册成功！<br>
您的账号为:<%=id %><br>
您的密码为:<%=password %><br>
请妥善保管好您的密码！<br>
</form>
<a href="login.jsp" style="color:#FAAF46 font-size:10px">返回登录页面</a>
</div>
</body>
</html>登录成功页面success.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录成功</title>
<style>
#a {
width: 360px;
padding: 8% 0 0;
margin: auto;
}
</style>
</head>
<body>
<div id="a">
<h1 align="center">登陆成功</h1>
</div>
</body>
</html>JavaBean
package com.wgh.bean;
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
login.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head></head>
<body>
<form name="loginFrom" action="dologin.jsp?" method="POST">
用户名：<input type="text" name="username" value="admin"/>
密码：<input type="password" name="password" value="1111111"/>
<input type="submit" value="登录"/>
</form>
</body>
</html>dologin.jsp
<%@ page contentType="text/html;charset=UTF-8" %>
<jsp:useBean id="user" class="com.wgh.bean.User">
<jsp:setProperty name="user" property="*"/>
</jsp:useBean>
<center>
<b>用户名：</b><%=user.getUsername() %>
<b>密码：</b><jsp:getProperty name="user" property="password"/>
</center>标签：String,登录,学习,jsp,nbsp,JSP,password,页面 来源： https://blog.csdn.net/qq12559574610/article/details/121302167
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