Nginx解决跨域问题

            add_header Access-Control-Allow-Origin *;
			add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
			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;
			}

在nginx.conf文件中加上上面这几行跨域参数无效。