[英]Axios and Fetch both result in CORS error but Postman doesn't
If I make a ajax request using either Axios or Fetch to this public endpoint:如果我使用 Axios 或 Fetch 向此公共端点发出 ajax 请求:
http://api.flickr.com/services/feeds/photos_public.gne?format=json http://api.flickr.com/services/feeds/photos_public.gne?format=json
I get the following error:我收到以下错误:
Access to fetch at 'http://api.flickr.com/services/feeds/photos_public.gne?format=json' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
But if I make the same request using Postman, I can see the results just fine.但是如果我使用 Postman 发出相同的请求,我可以很好地看到结果。 How to fix this?
如何解决这个问题?
Its not an issue of postman vs axios or fetch.这不是邮递员与 axios 或 fetch 的问题。 The issue is the server is returning jsonp not json.
问题是服务器返回的是 jsonp 而不是 json。 Neither Axios nor Fetch support jsonp.
Axios 和 Fetch 都不支持 jsonp。
Why not use ajax here?为什么不在这里使用ajax?
$(document).ready(function() { $.ajax({ url: 'http://api.flickr.com/services/feeds/photos_public.gne?format=json', dataType: 'jsonp', jsonpCallback: 'jsonFlickrFeed' }); window.jsonFlickrFeed = function(response) { console.log(response) } });
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
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