我有一个奇怪的问题......我们有一个受oauth保护的服务器，当它返回401（例如令牌已过期）时，angular接收状态-1。但是，当使用有效令牌时，一切都很好。
选项请求：
Request URL: [server].../forms/[id]
Request Method:OPTIONS
Status Code:200
Remote Address:52.212.120.132:80
Access-Control-Allow-Headers:authorization
Access-Control-Allow-Methods:GET,OPTIONS,DELETE,PUT,HEAD,POST
Access-Control-Allow-Origin:*
Access-Control-Max-Age:1800
Allow:GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH
Cache-Control:no-cache, no-store, max-age=0, must-revalidate
真正的电话：
Request URL: [server].../forms/[id]
Request Method:GET
Status Code:401
Remote Address:52.212.120.132:80
Content-Type:application/json;charset=UTF-8
Server:nginx/1.11.6
Transfer-Encoding:chunked
WWW-Authenticate:Bearer realm="oauth2-resource", error="invalid_token", error_description="Token expired"
但是在角度中，错误回调中收到状态-1。
我在控制台中遇到了CORS问题：
XMLHttpRequest cannot load [server].../forms/[id]. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:9000' is therefore not allowed access. The response had HTTP status code 401.
但是，正如您所看到的，OPTIONS请求中存在“Access-Control-Allow-Origin”标头，实际呼叫已完成。
有人有什么想法吗？欢迎任何建议或指示！