HTTP之状态码
状态代码有三位数字组成,第一个数字定义了响应的类别,共分五种类别:
1xx:指示信息--表示请求已接收,继续处理
2xx:成功--表示请求已被成功接收、理解、接受
3xx:重定向--要完成请求必须进行更进一步的操作
4xx:客户端错误--请求有语法错误或请求无法实现
5xx:服务器端错误--服务器未能实现合法的请求
常见状态码:
200 OK //客户端请求成功
400 Bad Request //客户端请求有语法错误,不能被服务器所理解
401 Unauthorized //请求未经授权,这个状态代码必须和WWW-Authenticate报头域一起使用
403 Forbidden //服务器收到请求,但是拒绝提供服务
404 Not Found //请求资源不存在,eg:输入了错误的URL
500 Internal Server Error //服务器发生不可预期的错误
503 Server Unavailable //服务器当前不能处理客户端的请求,一段时间后可能恢复正常
状态码 |
描述 |
100 |
Continue |
101 |
Switching Protocols |
200 |
OK |
201 |
Created |
202 |
Accepted |
203 |
Non-Authoritative Information |
204 |
No Content |
205 |
Reset Content |
206 |
Partial Content |
207 |
Multi-Status |
226 |
IM Used |
300 |
Multiple Choices |
301 |
Moved Permanently |
302 |
Found |
303 |
See Other |
304 |
Not Modified |
305 |
Use Proxy |
306 |
Unused |
307 |
Temporary Redirect |
400 |
Bad Request |
401 |
Unauthorized |
402 |
Payment Required |
403 |
Forbidden |
404 |
Not Found |
405 |
Method Not Allowed |
406 |
Not Acceptable |
407 |
Proxy Authentication Required |
408 |
Request Time-out |
409 |
Conflict |
410 |
Gone |
411 |
Length Required |
412 |
Precondition Failed |
413 |
Request Entity Too Large |
414 |
Request-URI Too Large |
415 |
Unsupported Media Type |
416 |
Requested range not satisfiable |
417 |
Expectation Failed |
423 |
Locked |
424 |
Failed Dependency |
425 |
Unordered Collection |
426 |
Upgrade Required |
500 |
Internal Server Error |
501 |
Not Implemented |
502 |
Bad Gateway |
503 |
Service Unavailable |
504 |
Gateway Time-out |
505 |
HTTP Version not supported |
506 |
Variant Also Negotiates |
507 |
Insufficient Storage |
516 |
Not Extended |