nginx跨域配置

		add_header Access-Control-Allow-Origin $http_origin;
		add_header Access-Control-Allow-Methods 'GET,HEAD,POST,PUT,PATCH,DELETE,OPTIONS';
		add_header Access-Control-Allow-Credentials true;
		add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

		if ($request_method = 'OPTIONS') {
			return 204;
		}