Unable to redirect to fitbit OAuth2 endpoint

问题

I am trying to get authorize from Fitbit. when I use Oauth2.0

frontend angular4

getAuthFromFitbit() {
this.http.get(this.BASE_URL + "/fitbit").subscribe(res => {
  console.log(res.json());
});}

backend node.js

then I got this problem:

回答1:

The error you see in the browser console is coming from a fitbit request, not from your server. Setting headers on your server will not help much in your case.

回答2:

This is a Cross Origin Resource Sharing issue. You need to disable CORS in your browser.

回答3:

i use this when front and back is not in same server.

app.use(function (req, res, next) {
  res.header('Access-Control-Allow-Origin', "*");
  res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
  res.header('Access-Control-Allow-Headers', 'Content-Type');
  next();
})

Could you try this.

来源：https://stackoverflow.com/questions/46822111/unable-to-redirect-to-fitbit-oauth2-endpoint