cors

问题 So I am trying to load the data from a REST source into my Angular 6 app using http: HttpClient from '@angular/common/http' . Calling the app in the browser using ng serve --open though doesn't do the job. I assume CORS to be the problem here. I guess I either have to set the server or the client headers with Access-Control-Allow-Origin or something, but I have already tried multiple ways without any success in making this simple REST call work. So what follows below is what I coded. Calling

问题 I add an API with following script in let's say http://www.test.com: <script src="http://apiendpoint.com/api/v1/api.js"></script> <div id="api" data-apikey="LA59CJI9HZ-KIJK4I5-3CKJC"></div> api.js $(function () { apikey = $('#api').data('apikey'); $("#api").load("http://apiendpoint.com?apikey=" + apikey); }) When I load the page, I get following error: XMLHttpRequest cannot load apiendpoint URL . Redirect from ' apiendpoint URL ' to ' apiendpoint URL ' has been blocked by CORS policy: No

问题 I add an API with following script in let's say http://www.test.com: <script src="http://apiendpoint.com/api/v1/api.js"></script> <div id="api" data-apikey="LA59CJI9HZ-KIJK4I5-3CKJC"></div> api.js $(function () { apikey = $('#api').data('apikey'); $("#api").load("http://apiendpoint.com?apikey=" + apikey); }) When I load the page, I get following error: XMLHttpRequest cannot load apiendpoint URL . Redirect from ' apiendpoint URL ' to ' apiendpoint URL ' has been blocked by CORS policy: No

问题 Given two sub domains: web.mysite.com and api.mysite.com Currently making any request from web. to api. results in the preflight OPTIONS request being made. This wouldn't be so much of an issue if it didn't add an extra 600ms to requests in China. I was told that setting document.domain = 'mysite.com'; in JS would resolve the issue but this hasn't helped at all. Is it possible / how can I disable the OPTIONS request when sending to just a different sub domain. 回答1: Solved this using the

问题 Apparently, I have completely misunderstood its semantics. I thought of something like this: A client downloads javascript code MyCode.js from http://siteA - the origin . The response header of MyCode.js contains Access-Control-Allow-Origin: http://siteB , which I thought meant that MyCode.js was allowed to make cross-origin references to the site B. The client triggers some functionality of MyCode.js, which in turn make requests to http://siteB , which should be fine, despite being cross

问题 Apparently, I have completely misunderstood its semantics. I thought of something like this: A client downloads javascript code MyCode.js from http://siteA - the origin . The response header of MyCode.js contains Access-Control-Allow-Origin: http://siteB , which I thought meant that MyCode.js was allowed to make cross-origin references to the site B. The client triggers some functionality of MyCode.js, which in turn make requests to http://siteB , which should be fine, despite being cross

问题 I am trying to add a custom function that will add the Access-Control-Allow-Origin Header since I cannot access the .conf files on the server. Below is my code; add_filter( 'wp_headers', array( 'eg_send_cors_headers' ), 10, 1 ); function eg_send_cors_headers( $headers ) { $headers['Access-Control-Allow-Origin'] = get_http_origin(); $headers['Access-Control-Allow-Credentials'] = 'true'; if ( 'OPTIONS' == $_SERVER['REQUEST_METHOD'] ) { if ( isset( $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']

问题 I am trying to add a custom function that will add the Access-Control-Allow-Origin Header since I cannot access the .conf files on the server. Below is my code; add_filter( 'wp_headers', array( 'eg_send_cors_headers' ), 10, 1 ); function eg_send_cors_headers( $headers ) { $headers['Access-Control-Allow-Origin'] = get_http_origin(); $headers['Access-Control-Allow-Credentials'] = 'true'; if ( 'OPTIONS' == $_SERVER['REQUEST_METHOD'] ) { if ( isset( $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']

问题 For several years we have successfully been uploading videos via the YouTube API using some custom JavaScript code. The code was based on some samples provided by Google (cors_upload.js). It's not something we use a lot, just every couple of weeks. Things were working fine a couple weeks ago, but it has come to my attention that things recently stopped working. We login fine, we obtain the channel info fine. But when we start the upload (which happens via XHR POST), we are getting a CORS

问题 This question already has answers here : No 'Access-Control-Allow-Origin' header is present on the requested resource—when trying to get data from a REST API (10 answers) Closed 17 days ago . I am trying to send a POST request to an API with multipart data. I test the API in postman and everything works fine in Postman. But when I call the API in react, it gives me CORS error. I cross-checked the URL, Header, and Data, all seems OK for me. I go through multiple Stack Overflow question on the