5. 请说明如下一些HTTP状态码的含义： 200： 400：...

NumberDescription100Continue101Switching protocols200OK201Created202Accepted203Non-Authoritative Information204No Content205Reset Content206Partial Content300Multiple Choices301Moved Permanently302Found303See Other304Not ModifiedNumber Description 100 Continue101 Switching protocols200 OK201 Created202 Accepted203 Non-Authoritative Information204 No Content205 Reset Content206 Partial Content300 Multiple Choices301 Moved Permanently302 Found303 See Other304 Not Modified305 Use Proxy307 Temporary Redirect400 Bad Request401 Unauthorized402 Payment Required403 Forbidden404 Not Found405 Method Not Allowed406 Not Acceptable407 Proxy Authentication Required408 Request Timeout409 Conflict410 Gone411 Length Required412 Precondition Failed413 Request Entity Too Large414 Request-URI Too Long415 Unsupported Media Type416 Requested Range Not Suitable417 Expectation Failed500 Internal Server Error501 Not Implemented502 Bad Gateway503 Service Unavailable504 Gateway Timeout505 HTTP Version Not Supported