RestApi调用使用iron-ajax抛出错误

Question

我正在从localhost进行RestApi调用，我收到了以下错误

XMLHttpRequest cannot load https://api-address/v1/registeruser.
No 'Access-Control-Allow-Origin' header is present on the
requested resource.Origin 'http://127.0.0.1:8887' is therefore not allowed  access. 
The response had HTTP status code 502.

然后我尝试修复此问题并将CORS扩展添加到我从SO获得的chrome。 添加扩展后我再次得到以下错误

POST https://api-address/v1/registeruser 502 (Proxy Error)

如何解决此问题？

Answer 1

如果您使用Chrome，这可能与以下事实有关：它通过在GET / POST / PUT / DELETE之前发送OPTIONS来预检ajax请求，如下所述：

AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?

我建议确保您的REST服务器能够响应OPTIONS请求。