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我从 Angular 应用程序向烧瓶服务器发出 POST 请求时收到以下 CORS 错误：

No 'Access-Control-Allow-Origin' header is present on the requested resource.

烧瓶服务器：

from flask import Flask, request
from flask.ext.cors import CORS
app = Flask(__name__)
cors = CORS(app)

@app.route('/testPost', methods=['POST'])
def testPost():
  phone = request.values.get('phone')  
  return phone

if __name__ == '__main__':
  app.run(debug=True)

我尝试了不同响应标头的组合，但没有成功。飞行前 OPTIONS 请求返回 200 ok 并带有以下标头

回复：

HTTP/1.0 200 OK
Content-Type: text/html; charset=utf-8
Allow: POST, OPTIONS
Access-Control-Allow-Origin: http://localhost:7000
Access-Control-Allow-Headers: accept, content-type
Access-Control-Allow-Methods: DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT
Content-Length: 0
Server: Werkzeug/0.11.3 Python/2.7.11
Date: Wed, 18 May 2016 00:58:10 GMT

要求：

OPTIONS /testPost HTTP/1.1
Host: localhost:5000
Connection: keep-alive
Cache-Control: max-age=0
Access-Control-Request-Method: POST
Origin: http://localhost:7000
Access-Control-Request-Headers: accept, content-type
Accept: */*
Referer: http://localhost:7000/
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
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1 回答 1

0

错误出现在我的 testPost() 方法的返回类型中。该方法需要返回一个 json 响应。

from flask import Flask, request
from flask.ext.cors import CORS
app = Flask(__name__)
cors = CORS(app)

@app.route('/testPost', methods=['POST'])
def testPost():
  phone = request.json['phone']
  return phone

if __name__ == '__main__':
  app.run(debug=True)
于 2016-05-19T19:49:33.120 回答