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                # 40 類視圖中使用裝飾器 1. 如果使用的是函數視圖,那么自己定義的裝飾器必須放在"app.route"下面,否者裝飾器失效 2. 類視圖的裝飾器,需要重寫類視圖的一個類屬性"decorators",這個類屬性是一個列表或者元組都可以,里面裝的是裝飾器 ```text from flask import Flask,request from functools import wraps app = Flask(__name__) def login_required(func): @wraps(func) def wrapper(*args,**kwargs): # 獲取參數 # login?username=xxx username = request.args.get("username") if username and username == "angle": return func(*args,**kwargs) else: return "請先登錄" return wrapper @app.route('/') def hello_world(): return 'Hello World!' @app.route('/settings/') @login_required def settings(): return "這是設置界面" if __name__ == '__main__': app.run(debug=True) ``` ![](https://box.kancloud.cn/0a9901c239f820b44252fcaf7d8a89de_861x372.png)![](https://box.kancloud.cn/6cb3b2c9bcc5a8160a432646c463f766_861x372.png) ```text class ProfileView(views.View): # 裝飾器 decorators = [login_required] def dispatch_request(self): return "個人中心界面" app.add_url_rule(rule='/profile/',view_func=ProfileView.as_view('profile')) ```
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