Flask目录：//www.greatytc.com/p/9b5e30320849
关于什么是cookie，什么是session不在赘述。
这里是一个登录注销实例：
from flask import Flask, url_for, request, render_template, redirect, session, make_response
app = Flask(__name__)
app.config['TEMPLATES_AUTO_RELOAD'] = True
# this secret key is required for using cookie and session
app.config['SECRET_KEY'] = '$%^&*()345671231adFGHJBHJK,./'
@app.route('/', methods=['GET', 'POST'])
def login():
if request.method == 'GET':
return render_template('login.html')
elif request.method == 'POST':
user_name = request.form.get('user_name')
password = request.form.get('password')
print(user_name)
resp = make_response(redirect(url_for('index')))
# 设置cookie，还有存活时长。
resp.set_cookie('username', user_name, max_age=3600)
# 设置session
session['password'] = password
return resp
@app.route('/index/')
def index():
#获取cookie与session
user_name = request.cookies.get('username')
password = session['password']
if user_name and password:
return render_template('index.html', user_name=user_name, password=password)
else:
response = redirect(url_for('login'))
return response
@app.route('/logout/')
def logout():
response = redirect(url_for('login'))
#通过response删除cookie里的'username'
response.delete_cookie('username')
#删除session
session.pop('password')
return response
if __name__ == "__main__":
app.run()
login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body style='text-align:center;'>
<form action="{{url_for('index')}}" method="post">
user name:<input type="text" name="user_name"><br>
password:<input type="password" name="password"><br>
<input type="submit" value='submit'>
</form>
</body>
</html>
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body style="text-align:center;">
<p>Hello, {{user_name}}!</p><p> We know your password is {{password}}</p>
<a href="{{url_for('logout')}}">注销</a>
</body>
</html>
