301 Move Permanently
302 Fond
303 See Other
304 Not Modified
307 Temporary Redirect
401 Unauthorizied
403 Forbidden
404 Not Found
500 Internal Server Error
503 Service Unavailable
301 Move Permanently
302 Fond
303 See Other
304 Not Modified
307 Temporary Redirect
401 Unauthorizied
403 Forbidden
404 Not Found
500 Internal Server Error
503 Service Unavailable
原文：https://www.cnblogs.com/love-yangerlei/p/8375985.html