cors

问题 This question already has answers here : Why aren't POST requests always preflighted? (1 answer) Why is there no preflight in CORS for POST requests with standard content-type (1 answer) Closed last month . I understand that cross-origin, "simple" requests, like GET and POST have always been allowed (but you just can't view the response), and that PUT/DELETE are blocked, or preflighted if your browser supports CORS. I understand that allowing a GET request to be sent is harmless, as long as

问题 I have a website that accesses an API from an external server (not the server that serves the website) via a plain XmlHttpRequest (see below). That API requires an API key for accessing the service to be added as request header. However, as these are CORS requests the browser first does a preflight request to check if that server supports CORS. Now, it seems that the server also wants to see the API key in these preflight requests that are done by the browser. Is it possible to pass the API

问题 I'm trying to set up a React/Redux - NodeJs Express stack with Google OAuth authentication. My issue is a CORs error kicking back in the console. I've found some Stack Overflow questions that I feel were exactly my issue, but the solutions aren't producing any results. Specifically these two: CORS with google oauth and CORS/CORB issue with React/Node/Express and google OAuth. So I've tried a variety of fixes that all seem to lead me back to the same error. Here's the most straight forward of

问题 Greetings I have one web application with following architecture: Web api: ASP.net core 2.1 (Windows Authentication) UI: angular 8 UI is able to get data but unable to send data. I mean GET method is working fine but POST, PUT, DELETE options are not working . And all the methods are working using POSTMAN. ERROR is: Access to XMLHttpRequest at 'http://xx.xxx.xxx.xx:xxyy/xxx/xxxxxx/Method' from origin 'http://localhost:xxxx' has been blocked by CORS policy: Response to preflight request doesn

问题 I'm encountering a problem where axios doesn't seem to send custom headers with my requests. I'm using it like this: axios({ method: 'get', url: 'www.my-url.com', headers: { 'Custom-Header': 'my-custom-value' } }) However, looking at the actual request that is sent to the server, the custom header doesn't seem to be anywhere. REQUEST HEADERS: Accept: */* Accept-Encoding: gzip, deflate, br Accept-Language: es-ES,es;q=0.9 Access-Control-Request-Headers: custom-header Access-Control-Request

问题 I'm encountering a problem where axios doesn't seem to send custom headers with my requests. I'm using it like this: axios({ method: 'get', url: 'www.my-url.com', headers: { 'Custom-Header': 'my-custom-value' } }) However, looking at the actual request that is sent to the server, the custom header doesn't seem to be anywhere. REQUEST HEADERS: Accept: */* Accept-Encoding: gzip, deflate, br Accept-Language: es-ES,es;q=0.9 Access-Control-Request-Headers: custom-header Access-Control-Request

问题 I've got an AbstractAuthenticationProcessingFilter that I'm using to handle POST requests at path /sign-in . CORS preflight requests are coming back 404 because there is no path that matches. This makes sense to me. What I would like to know is if there is a way to inform Spring that there is a filter handling the POST (rather than a controller), so that Spring can dispatch the OPTIONS in the same way it would if a controller were handling the POST. Would it be bad practice to write a

问题 I've got an AbstractAuthenticationProcessingFilter that I'm using to handle POST requests at path /sign-in . CORS preflight requests are coming back 404 because there is no path that matches. This makes sense to me. What I would like to know is if there is a way to inform Spring that there is a filter handling the POST (rather than a controller), so that Spring can dispatch the OPTIONS in the same way it would if a controller were handling the POST. Would it be bad practice to write a

问题 I have deployed my ASP.NET Core web API to Azure, and I can access its endpoints using Swagger or a web debugger like Fiddler. In both cases (same origin in Swagger, different origin using Fiddler from my computer), when accessing the APIs I get the expected result, with CORS enabled as follows in my Startup.cs : add services.AddCors(); to ConfigureServices . add the middleware to Configure : I'm aware that order here matters (ASP.NET 5: Access-Control-Allow-Origin in response), so I am

问题 I have deployed my ASP.NET Core web API to Azure, and I can access its endpoints using Swagger or a web debugger like Fiddler. In both cases (same origin in Swagger, different origin using Fiddler from my computer), when accessing the APIs I get the expected result, with CORS enabled as follows in my Startup.cs : add services.AddCors(); to ConfigureServices . add the middleware to Configure : I'm aware that order here matters (ASP.NET 5: Access-Control-Allow-Origin in response), so I am