由 dsj 在 06-03-2003 23:39 发表:
解读HTTP状态问题
一般而言，如果代码是在200到299代表成功。常见的200状态码代表符合客户端的要求。300到399代表必须由客户端采取动作才能满足所提出的要求。400到499和500到599代表客户端和服务器有问题。最常见的状态代码有两个，一个是404，代表客户端要求的资源不在服务器上，403代表的是所要求的资源拒绝服务。W3C在HTTP状态代码这个网页上对状态代码有更完整的讨论。
本人水平有限，那位兄弟可以翻译出来！
http://www.w3.org/Protocols/HTTP/HTRESP.html
This is a historic document and is not accurate anymore. For up-to-date details on the HTTP specification, see the latest HTTP/1.1 drafts
Status codes
The values of the numeric status code to HTTP requests are as follows. The data sections of messages Error, Forward and redirection responses may be used to contain human-readable diagnostic information.
Success 2xx
These codes indicate success. The body section if present is the object returned by the request. It is a MIME format object. It is in MIME format, and may only be in text/plain, text/html or one fo the formats specified as acceptable in the request.
OK 200
The request was fulfilled.
CREATED 201
Following a POST command, this indicates success, but the textual part of the response line indicates the URI by which the newly created document should be known.
Accepted 202
The request has been accepted for processing, but the processing has not been completed. The request may or may not eventually be acted upon, as it may be disallowed when processing actually takes place. there is no facility for status returns from asynchronous operations such as this.
Partial Information 203
When received in the response to a GET command, this indicates that the returned metainformation is not a definitive set of the object from a server with a copy of the object, but is from a private overlaid web. This may include annotation information about the object, for example.
No Response 204
Server has received the request but there is no information to send back, and the client should stay in the same document view. This is mainly to allow input for scripts without changing the document at the same time.
Error 4xx, 5xx
The 4xx codes are intended for cases in which the client seems to have erred, and the 5xx codes for the cases in which the server is aware that the server has erred. It is impossible to distinguish these cases in general, so the difference is only informational.
The body section may contain a document describing the error in human readable form. The document is in MIME format, and may only be in text/plain, text/html or one for the formats specified as acceptable in the request.
Bad request 400
The request had bad syntax or was inherently impossible to be satisfied.
Unauthorized 401
The parameter to this message gives a specification of authorization schemes which are acceptable. The client should retry the request with a suitable Authorization header.
PaymentRequired 402
The parameter to this message gives a specification of charging schemes acceptable. The client may retry the request with a suitable ChargeTo header.
Forbidden 403
The request is for something forbidden. Authorization will not help.
Not found 404
The server has not found anything matching the URI given
Internal Error 500
The server encountered an unexpected condition which prevented it from fulfilling the request.
Not implemented 501
The server does not support the facility required.
Service temporarily overloaded 502 (TO BE DISCUSSED)
The server cannot process the request due to a high load (whether HTTP servicing or other requests). The implication is that this is a temporary condition which maybe alleviated at other times.
Gateway timeout 503 (TO BE DISCUSSED)
This is equivalent to Internal Error 500, but in the case of a server which is in turn accessing some other service, this indicates that the respose from the other service did not return within a time that the gateway was prepared to wait. As from the point of view of the clientand the HTTP transaction the other service is hidden within the server, this maybe treated identically to Internal error 500, but has more diagnostic value.
Note: The 502 and 503 codes are new and for discussion, September 19, 1994
Redirection 3xx
The codes in this section indicate action to be taken (normally automatically) by the client in order to fulfill the request.
Moved 301
The data requested has been assigned a new URI, the change is permanent. (N.B. this is an optimisation, which must, pragmatically, be included in this definition. Browsers with link editing capabiliy should automatically relink to the new reference, where possible)
The response contains one or more header lines of the form
URI:
1<url> String CrLf
2
3
4
5Which specify alternative addresses for the object in question. The String is an optional comment field. If the response is to indicate a set of variants which each correspond to the requested URI, then the multipart/alternative wrapping may be used to distinguish different sets
6
7
8
9Found 302
10
11The data requested actually resides under a different URL, however, the redirection may be altered on occasion (when making links to these kinds of document, the browser should default to usin</url>