Python Flask 跨域访问装饰器实现

现在web开发已经进入前后端分离的阶段

后端往往只需要吐api数据就ok

一般纯的api接口需要考虑跨域访问问题

下面是简单的跨域访问装饰器在flask中的实现

from functools import wraps
from flask import make_response

def allow_cross_domain(fun):
    @wraps(fun)
    def wrapper_fun(*args, **kwargs):
        rst = make_response(fun(*args, **kwargs))
        rst.headers['Access-Control-Allow-Origin'] = '*'
        rst.headers['Access-Control-Allow-Methods'] = 'PUT,GET,POST,DELETE'
        allow_headers = "Referer,Accept,Origin,User-Agent"
        rst.headers['Access-Control-Allow-Headers'] = allow_headers
        return rst
    return wrapper_fun

@app.route('/hosts/')
@allow_cross_domain
def domains():
    pass

http://segmentfault.com/a/1190000000753690