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问题 I have some trouble make PUT and DELETE CORS request to Web API on other domain. I've coded API by tutorial http://www.asp.net/web-api/overview/security/enabling-cross-origin-requests-in-web-api#create-webapi-project. GET and POST Requests works fine, but DELETE and PUT doesn't. I get this message: Failed to load resource: the server responded with a status of 405 (Method Not Allowed) Failed to load resource: No 'Access-Control-Allow-Origin' header is present on the requested resource. When I

问题 I was reading the spec on CORS requests, and I found this about preflight requests: These are requests to a non same origin URL with an HTTP request method other than GET that first need to be authorized using either a preflight result cache entry or a preflight request. I had thought the purpose of preflight requests was to check whether a request was allowed before making it, in case it (illegitimately) changed server state . But HEAD and OPTIONS don't modify server state. I must

问题 General: Request URL:x/site.php Request Method:OPTIONS Status Code:302 Found Remote Address:x.x.x.x:80 Response Headers: view source Access-Control-Allow-Headers:Content-Type Access-Control-Allow-Origin:* Access-Control-Max-Age:300 Cache-Control:no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Content-Length:0 Content-Type:text/html; charset=UTF-8 Date:Thu, 02 Mar 2017 14:27:21 GMT Expires:Thu, 19 Nov 1981 08:52:00 GMT Location:y Pragma:no-cache Server:Apache/2.4.25 (Ubuntu)

问题 I need to create a JSON ajax request from another domain. after I think I got over the cross domain issues, here is where I stuck: I need to add my custom " myCustomHeader " header - that's easy from a server , but seems to be much more complicated from the client ... We added them $.ajax({ type: 'POST', data: put the results of your header request here, url: 'http://server.com/service', beforeSend: function (xhr) { xhr.setRequestHeader('myCustomHeader', '1') }, success: function(data) {

问题 My nodejs/express includes: app.use(function handleAppError(err, req, res, next) { const msg = 'ERROR: App error: ' + util.inspect(err); // Website you wish to allow to connect res.setHeader('Access-Control-Allow-Origin', '*'); console.log(msg); if (res.headersSent) { next(err); } else { res.status(500).send(msg); } }); …but on making a call, I still end up with an error in Chrome: XMLHttpRequest cannot load http://:8080/management-api/v1/bots. Response to preflight request doesn't pass

问题 I am trying to access a file in a bucket on google cloud storage. I have set the CORS configuration for the bucket. But I am getting this error when I make a request across https://. It works fine for requests made across http://. "XMLHttpRequest cannot load "FILENAME". Request header field X-Requested-With is not allowed by Access-Control-Allow-Headers in preflight response." 回答1: You must include X-Requested-With in the value of the responseHeader member in your config: [ { "origin": ["http

问题 I have an API on ASP.net Core 2 (windows authentication) and a front on angular. I make a cors configuration to querying my backend from the SPA angular, but im blocked in cause of the preflight who are rejected from the IIS server because he don't have identification information. error message : Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://XXXXXX' is therefore not allowed access.

问题 I have a react app serving from "https://www.domain1.com" and the backend is served on a different domain "https://www.domain2.com". Api requests made from domain1.com to domain2.com are not simple HTTP requests since we are adding an Authorization header in all the requests. This leads to CORS OPTIONS request being made further increasing the latency of the app by a heavy margin. 1. Is there any way I can merge the 2 domains ? 2. Can I avoid CORS OPTIONS preflight requests for these non

问题 I do not manage to get my application running. I was reading about this the whole day, tried a bunch of stuff, but in the end nothing did work. In the last attempt I tried this link. I have the java back end as a RESTful web service without any additional framework like Jersey or RESTeasy, just pure java. There I have my login POST method: @POST @Path("login") @Produces(value = "application/json") public Response login() { AccountAuthentificator authentificator = AccountAuthentificator

问题 My resource server is secured by OAuth2 and uses this CORS configuration: @Bean CorsConfigurationSource corsConfigurationSource() { CorsConfiguration configuration = new CorsConfiguration(); configuration.setAllowCredentials(true); configuration.setAllowedOrigins(Arrays.asList("*")); configuration.setAllowedMethods(Arrays.asList("*")); configuration.setAllowedHeaders(Arrays.asList("*")); UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(); source