python Flask框架CBV视图

1.演示之前需要先写一个装饰器

# 装饰器
def wrapper(func):
    def inner(*args, **kwargs):
        print('操作函数%s之前' % func.__name__)
        ret = func(*args, **kwargs)
        print('操作函数%s之后' % func.__name__)
        return func.__name__
    return inner

2.写一个CBV的例子

# 导入模块
from flask import Flask, views, url_for
app = Flask(__name__)

# 首页视图函数
@app.route("/")
def index():
    return "this is index page !"

# 登录视图类,继承MethodView
class Login(views.MethodView):
    # 允许访问方式
    methods = ["GET", "POST"]
    # 路由装饰器,如有多个,列表方式展示
    # 顺序:列表从头到尾,装饰由内向外，一一对应
    decorators = [wrapper, ]
 
    # 处理GET请求
    def get(self):
        print(url_for("my_login"))
        return 'this is login page ！'
    # 处理POST请求
    def post(self):
        return "Successful!"

# 文章视图类,继承MethodView
class Articles(views.MethodView):
    methods = ["GET", "POST"]
    decorators = [wrapper, ]
 
    # 处理文章GET请求
    def get(self):
        print(url_for('articles'))
        return 'this is articles list ！'
 
    # 处理文章POST请求
    def post(self):
        return "Add Successful !"

# 登录页面
app.add_url_rule("/login", endpoint=None, view_func=Login.as_view("my_login"))
# 文章页面
app.add_url_rule("/articles", endpoint=None, view_func=Articles.as_view("articles"))

if __name__ == '__main__':
    app.run('127.0.0.1', 5005, debug=True)