目录
4.1后（返回值）任何值：username/password
[4.1.3返回 用户名+密码 结果](#4.1.3返回 用户名+密码 结果)
（4.2.1app.py）用户名/密码正确，返回index首页，否则，返回error404_n页面
[（5.1 app.py的注册部分）](#（5.1 app.py的注册部分）)
[（5.2 register.html 注册表）](#（5.2 register.html 注册表）)
[**500：目录结构 / 内容错误](#**500：目录结构 / 内容错误)
1.基础知识
Linux写法
2.脚手架（模版）
（1）打印hello world
python
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from tornado import web, httpserver, ioloop
#1.逻辑处理模块
class LoginHandler(web.RequestHandler):
def get(self,*args,**kwargs):
self.write("hello world")
#self.render("login.html")
#2.路由
application=web.Application([
(r"/login",LoginHandler),
])
#3.socket服务端
if __name__=='__main__':
http_server=httpserver.HTTPServer(application)
print("http://127.0.0.1:8080/login")
http_server.listen(8080)
ioloop.IOLoop.current().start()（2）网页login
1）.py
python
self.render("login.html") #渲染- .html
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1 style="color:pink;">hi</h1>
</body>
</html>
**报错500，目录结构
3.登录流程图（processon）
4.登录表单
4.1后（返回值）任何值：username/password
**基于这个前端页面，用tornado框架，写后端api接口代码，调用get、post请求。
（4.1.1）app.py
python
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from tornado import web, httpserver, ioloop
#1.逻辑处理模块
class LoginHandler(web.RequestHandler):
def get(self,*args,**kwargs):
#self.write("hello world")
#返回登录页面
#self.render("login.html") #渲染
self.render("表单.html") #渲染
def post(self,*args,**kwargs):
#验证用户密码(获取)
username=self.get_argument("username")
passward=self.get_argument("password")
print(username,passward)
#设置
setting={
'template_path':'template'
}
#2.路由
application=web.Application([
(r"/login",LoginHandler), #这个对应着/login
],**setting)
#3.socket服务端
if __name__=='__main__':
http_server=httpserver.HTTPServer(application)
print("http://127.0.0.1:8080/login")
http_server.listen(8080)
ioloop.IOLoop.current().start()（4.1.2）表单.html
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>表单</title>
</head>
<body>
<h2>表单</h2>
<form action="/login" method="post"> <!--这里的、login对应着app.py里面的路由-->
账号：<input type="text" name="username"/><br/>
密码：<input type="password" name="password"/><br/>
<input type="submit" value="登录"/>
</form>
</body>
</html>（4.3）login.py（没啥用，充当第二页的跳转页面）
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1 style="color:pink;">hi</h1>
</body>
</html>4.1.3返回 用户名+密码 结果
4.2写死 admin/123 ##，返回index首页
（4.2.1app.py）用户名/密码正确，返回index首页，否则，返回error404_n页面
python
#!/usr/bin/env python
#-*- coding:utf-8 -*-
from tornado import web, httpserver, ioloop
#1.逻辑处理模块
#登录
class LoginHandler(web.RequestHandler):
def get(self,*args,**kwargs):
#self.write("hello world")
#返回登录页面
#self.render("login.html") #渲染
self.render("表单.html") #渲染
def post(self,*args,**kwargs):
#验证用户密码(获取)
username=self.get_argument("username")
passward=self.get_argument("password")
#print(username,passward)
#写死，if正确进入
if username=='admin' and passward=='123':
self.redirect('/index')##跳转
else:
self.render('error.html')
##跳转首页面模块
class IndexHandler(web.RequestHandler):
def get(self,*args,**kwargs):
self.render("index.html")
#设置
setting={
'template_path':'template'
}
#2.路由
application=web.Application([
(r"/login",LoginHandler), #这个对应着/login
(r"/index",IndexHandler),##首页面路由
],**setting)
#3.socket服务端
if __name__=='__main__':
http_server=httpserver.HTTPServer(application)
print("http://127.0.0.1:8080/login")
http_server.listen(8080)
ioloop.IOLoop.current().start()（4.2.2index.html）首页
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>login2</title>
</head>
<body>
<h2 style="color:pink">I am index</h2>
</body>
</html>（4.2.3error.html）404_n
html
<h2 style="color:purple">输入错误404_n</h2>5.注册表单（后台）
（5.1 app.py的注册部分）
python
###全局变量
user_info={}
python
###注册 post获取
class RegisterHandler(web.RequestHandler):
def post(self,*args,**kwargs):
email = self.get_argument("emial")
username = self.get_argument("username")
password = self.get_argument("password")
password1 = self.get_argument("password1")
access = self.get_argument("access", default=None)
if access: #用email当key
if password==password1:
UNER_INFO[email]={
"username":username,
"password":password,
}
self.render("success.html",info={'stauts':True,
'info':'注册成功',
'second':3})
else:
self.render('error.html', info={
'status': False,
'info': '密码不一致',
'second': 3, # 倒计时3秒
'url': '/register'}) # 跳转
else:
self.render('error.html', info={
'status': False,
'info': '请同意协议',
'second': 3, # 倒计时3秒
'url':'/register'}) # 跳转
def get(self,*args,**kwargs):
self.render("表单.html",type='register')
###收到数据后要存储起来
###用数据库/全局变量(√)上面（5.2 register.html 注册表）
python
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>用户注册</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.container {
background-color: white;
padding: 20px;
border-radius: 5px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
width: 300px;
}
.container h2 {
text-align: center;
margin-bottom: 20px;
}
.form-group {
margin-bottom: 15px;
}
.form-group label {
display: block;
margin-bottom: 5px;
}
.form-group input[type="email"],
.form-group input[type="text"],
.form-group input[type="password"] {
width: 100%;
padding: 8px;
box-sizing: border-box;
border: 1px solid #ccc;
border-radius: 4px;
}
.form-group input[type="checkbox"] {
margin-right: 5px;
}
.form-group button {
width: 100%;
padding: 10px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}
.form-group button:hover {
background-color: #45a049;
}
.form-group .reset {
background-color: #ccc;
}
.form-group .reset:hover {
background-color: #bbb;
}
</style>
</head>
<body>
<div class="container">
<h2>用户注册</h2>
<form>
<div class="form-group">
<label for="email">邮箱</label>
<input type="email" id="email" name="email" required>
</div>
<div class="form-group">
<label for="username">用户名</label>
<input type="text" id="username" name="username" value="admin" required>
</div>
<div class="form-group">
<label for="password">密码</label>
<input type="password" id="password" name="password" required>
</div>
<div class="form-group">
<label for="confirm-password">确认密码</label>
<input type="password" id="confirm-password" name="confirm-password" required>
</div>
<div class="form-group">
<input type="checkbox" id="agreement" name="agreement" required>
<label for="agreement">接受 用户协议</label>
</div>
<div class="form-group">
<button type="reset" class="reset">重置</button>
<button type="submit">注册</button>
</div>
</form>
</div>
</body>
</html>