问题现象
-
浏览器报403错误，具体如下：
OPTIONS http://bucket.oss-cn-beijing.aliyuncs.com/ XMLHttpRequest cannot load http://bucket.oss-cn-beijing.aliyuncs.com/. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '{yourwebsiet}' is therefore not allowed access. The response had HTTP status code 403. - OSS报CORS请求不允许的错误，具体如下：
<Code>AccessForbidden</Code> <Message>CORSResponse: This CORS request is not allowed. This is usually because the evaluation of Origin, request method / Access-Control-Request-Method or Access-Control-Requet-Headers are not whitelisted by the resource's CORS spec.</Message>
可能原因
跨域规则配置错误。
说明
- CORS报错一般是站点类应用导致，浏览器中可以查看请求详情。例如Chrome，按F12打开开发者工具 ，在Network页签中查看相应元素。
- OSS返回的错误可以通过抓包获取。如果使用Wireshark，筛选器可以指定为host bucket-name.oss-cn-beijing.aliyuncs.com。
解决方案
按照以下步骤正确配置跨域规则。