1
from flask import Flask
app = Flask(__name__)
app.config.from_object("settings.DevelopmentConfig")
@app.route("/index", methods=["POST", "GET"])
def index():
pass
def order():
return "order"
app.add_url_rule("/order", view_func=order)
if __name__ == '__main__':
app.run()
2
# coding=utf-8
# coding=utf8
from flask import Flask, url_for
app = Flask(__name__)
app.config.from_object("settings.DevelopmentConfig")
@app.route("/index", methods=["POST", "GET"], endpoint="n1")
def index():
v1 = url_for("n1") # endpoint用于反向生成路由, 默认不起别名endpoint就是他的函数名
v2 = url_for("n2")
v3 = url_for("n3")
@app.route("/index", methods=["POST", "GET"], endpoint="n2")
def index2():
pass
@app.route("/index", methods=["POST", "GET"], endpoint="n3")
def index3():
pass
if __name__ == '__main__':
app.run()
3
# coding=utf-8
# coding=utf8
from flask import Flask, url_for
app = Flask(__name__)
app.config.from_object("settings.DevelopmentConfig")
@app.route("/index/<int:nid>", methods=["POST", "GET"])
def index(nid):
print(nid) # url后面可以加一个uid, 比如/index/1
return "index"
if __name__ == '__main__':
app.run()
4
# coding=utf-8
"""自定义装换器"""
from flask import Flask, views, url_for
from werkzeug.routing import BaseConverter
app = Flask(import_name=__name__)
class RegexConverter(BaseConverter):
"""
自定义URL匹配正则表达式
"""
def __init__(self, map, regex):
super(RegexConverter, self).__init__(map)
self.regex = regex
def to_python(self, value):
"""
路由匹配时，匹配成功后传递给视图函数中参数的值
:param value:
:return:
"""
return int(value)
def to_url(self, value):
"""
使用url_for反向生成URL时，传递的参数经过该方法处理，返回的值用于生成URL中的参数
:param value:
:return:
"""
val = super(RegexConverter, self).to_url(value)
return val
# 添加到flask中
app.url_map.converters['regex'] = RegexConverter
# 执行自定义转换器头to_python
@app.route('/index/<regex("\d+"):nid>')
def index(nid):
# 执行自定义转换器to_url
print(url_for('index', nid='888'))
return 'Index'
if __name__ == '__main__':
app.run()
5
# coding=utf-8
from flask import Flask
app = Flask(__name__)
app.config.from_object("settings.DevelopmentConfig")
# defaults传进去一个默认值, redirect_to跳转到另一个路由
@app.route("/old", methods=["POST", "GET"], endpoint="a",
defaults={"a": 1}, redirect_to="/new", subdomain="")
def old():
return "老功能"
@app.route("/new", methods=["POST", "GET"])
def new():
return "新功能"
if __name__ == '__main__':
app.run()
6
# coding=utf-8
from flask import Flask
app = Flask(__name__)
# 定义服务器域名
app.config["SERVER_NAME"] = "oldboy.com:5000"
# subdomain匹配子域名, 比如http://www.oldboy.com:5000/old, username="www"
@app.route("/old", methods=["POST", "GET"], subdomain="<username>")
def old(username):
print(username)
return "老功能"
@app.route("/new", methods=["POST", "GET"])
def new():
return "新功能"
if __name__ == '__main__':
app.run(debug=True)
装饰器作业
# coding=utf-8
from flask import Flask
from functools import wraps
app = Flask(__name__)
app.config.from_object("settings.DevelopmentConfig")
def wapper(func):
@wapper(func)
def inner(*arg,**kwargs):
print("before")
return func(*arg, **kwargs)
return inner
@app.route("/index", methods=["POST", "GET"])
@wapper # 装饰器需要写到route装饰器的下面
def index():
pass
def order():
return "order"
app.add_url_rule("/order", view_func=order)
if __name__ == '__main__':
app.run()
