#允许跨域请求的域，*代表所有
	add_header 'Access-Control-Allow-Origin' *;
	#允许带上cookie请求
	add_header 'Access-Control-Allow-Credentials' 'true';
	#允许请求的方法，比如 GET/POST/PUT/DELETE
	add_header 'Access-Control-Allow-Methods' *;
	#允许请求的header
	add_header 'Access-Control-Allow-Headers' *;