tornado ajax post,tornado接收ajax的post请求报错WARNING:tornado.access:405 OPTIONS /add

后端报错信息

WARNING:tornado.access:405 OPTIONS /add (::1) 1.00m

前端报错信息

2xhr.js?ec6c:172 OPTIONS http://localhost:8888/add 405 (Method Not Allowed)/#/:1 Access to XMLHttpRequest at 'http://localhost:8888/add' from origin 'http://localhost:8080' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

解决办法

在代码中实现options方法并设置self.set_header('Access-Control-Allow-Headers', 'Content-Type')

import tornado.ioloop

import tornado.web

import json

class AddHandler(tornado.web.RequestHandler):

def initialize(self):

# self.request.method = 'POST'

# print(self.request.method, type(self.request.method))

self.set_default_header()

def get(self):

self.write("U get story id is ")

def post(self):

self.write(json.dumps({"sum": 'rrrrrr'}))

def set_default_header(self):

print("setting headers!!!")

self.set_header('Access-Control-Allow-Origin', '*')

# self.set_header('Access-Control-Allow-Origin', 'http://localhost:8080')

# self.set_header('Access-Control-Allow-Headers', 'X-Requested-With')

self.set_header('Access-Control-Allow-Headers', '*')

self.set_header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, PATCH, OPTIONS')

self.set_header('Content-Type', 'application/json; charset=UTF-8')

self.set_header('Access-Control-Allow-Headers', 'Content-Type')

def options(self):

pass

application = tornado.web.Application([

(r"/add", AddHandler),

])

if __name__ == "__main__":

application.listen(8888)

tornado.ioloop.IOLoop.instance().start()

参考网址

标签：Control,set,tornado,self,Access,header,405,报错

来源： https://www.cnblogs.com/chen55555/p/11586431.html