ng2-file-upload不适用于angular 6

Question

I am wroking with ng2-file-upload package in angular 6. I had my backend in PHP.

I am able to select file but when I try to click on upload getting this error:

Failed to load [api url]: Response to preflight request doesn't pass
access control check: The value of the 'Access-Control-Allow-Origin' 
header in the response must not be the wildcard '*' when the request's 
credentials mode is 'include'. Origin 'http://localhost:4200' is 
therefore not allowed access. The credentials mode of requests 
initiated by the XMLHttpRequest is controlled by the withCredentials 
attribute.

Added Header to my API

header('Access-Control-Allow-Origin','http://localhost:4200/');
header('Access-Control-Allow-Methods', 'POST');
header('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
header('Access-Control-Allow-Credentials', true);

Still have the same problem.

Thanks.

Answer 1

You can add these instead of what you are using

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, PATCH');
header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token , Authorization');
header('Access-Control-Max-Age: 1728000');

preflight option request is rejected as you are not allowing that method.