HTTP/1.1 200 OK Server: nginx Date: Thu, 06 Aug 2020 11:49:49 GMT Content-Type: text/html Content-Length: 0 Connection: keep-alive Last-Modified: Sat, 09 May 2020 04:04:13 GMT ETag: "0-5a52f34e4a940" Accept-Ranges: bytes Vary: User-Agent Cache-Control: private, max-age=600 Expires: Thu, 06 Aug 2020 11:59:49 GMT X-Frame-Options: SAMEORIGIN, ALLOW-FROM http://zczx.hnu.edu.cn X-Content-Type-Options: nosniff X-XSS-Protection: 1; mode=block Content-Language: zh-CN