以下呢内容摘自《COMPUTER NETWORKING A Top-Down Approach (Fifth Edition )》
200 OK: Requested succeeded and the information is returned in the response. (请求成功辣！)
301 Moved Permanently: Requested object has been permanently moved; the new URL is specified in Location: header of the response message. The client software will automatically retrieve the new URL. (请求的网页被永久转移到另一个地方辣！)
400 Bad Request: This is a generic error code indicating that the request could not be understood by the server. (服务器看不懂你的请求！)
404 Not Found: The requested document does not exist on this server. (请求的文件不在这个服务器上！)
505 HTTP Version Not Supported: The request HTTP protocol version is not supported by the server. (服务器不支持请求的HTTP版本)
初学计算机网络，还请其他园主多多指教！
Some common status codes and associated phrases in HTTP Response Messege
原文：https://www.cnblogs.com/Grjotagia-121-qj/p/12558194.html