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javascript-js跨域请求问题

时间:2021-07-01 10:21:17 帮助过:21人阅读

我在后端已经添加了header("Access-Control-Allow-Origin:*");,但是为什么前端使用js请求时还是出现

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://nichijou.org/x. (Reason: CORS header 'Access-Control-Allow-Origin' missing). 
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://nichijou.org/x. (Reason: CORS request failed).

回复内容:

我在后端已经添加了header("Access-Control-Allow-Origin:*");,但是为什么前端使用js请求时还是出现

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://nichijou.org/x. (Reason: CORS header 'Access-Control-Allow-Origin' missing). 
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://nichijou.org/x. (Reason: CORS request failed).

  1. 很多浏览器都已经不支持使用 * 来设置 Access-Control-Allow-Origin 了,正常的做法是 header("Access-Control-Allow-Origin:".$_SERVER['HTTP_HOST']);

  2. 如果需要传递 COOKIE 的话还需要搭配 Access-Control-Allow-Credentials: true 这个头使用。具体可以看文档:https://developer.mozilla.org/en-US/docs/Web/HTTP/Server-Side_Access_Control

什么浏览器啊,版本号都列出来

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