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                # 37 add\_url\_rule和app.route原理剖析 ## add\_url\_rule\(rule,endpoint=None,view\_func=None\) 這個方法用來添加url與視圖函數的映射,如果沒有填寫,那么默認會使用"view\_func"的名字作為"endpoint",以后再使用"url\_for"的時候,就要看在映射的時候有沒有傳遞"endpoint"參數,如果傳遞了,那么就應該使用"endpoint"指定的字符串,如果沒有傳遞,那么就應該使用"view\_func"的名字 ## app.route\(rule,\*\*options\)裝飾器 這個裝飾器,其實也是使用"add\_url\_rule"來實現url與視圖函數映射的 ```text app.py from flask import Flask, url_for app = Flask(__name__) # endpoint='index' == > **options @app.route('/',endpoint="index") # ==> decorator # @decorator def hello_world(): # print(url_for("my_list")) print(url_for("miku")) return 'Hello World!' # decorator(hello_world) def my_list(): return "列表頁" # view_func:視圖函數 # rule:路由 # endpoint:可以配合url_for使用 # endpoint:為url去一個名字 # app.add_url_rule(rule="/list/",view_func=my_list) app.add_url_rule(rule="/list/",endpoint="miku",view_func=my_list) with app.test_request_context(): print(url_for("index")) if __name__ == '__main__': app.run(debug=True) ```
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