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http头的Location跟Conten-Location

2012-06-30 
http头的Location和Conten-Location响应头域中的:Location响应头 Location响应头用于重定向接收者到一个新

http头的Location和Conten-Location

响应头域中的:Location响应头

Location响应头用于重定向接收者到一个新URI地址。

The Location response-header field is used to redirect the recipient to a location other than the Request-URI for completion of the request or identification of a new resource. For 201 (Created) responses, the Location is that of the new resource which was created by the request. For 3xx responses, the location SHOULD indicate the server’s preferred URI for automatic redirection to the resource. The field value consists of a single absolute URI.

       Location       = "Location" ":" absoluteURI

An example is:

       Location: http://www.w3.org/pub/WWW/People.html
      Note: The Content-Location header field (section 14.14) differs      from Location in that the Content-Location identifies the original      location of the entity enclosed in the request. It is therefore      possible for a response to contain header fields for both Location      and Content-Location. Also see section 13.10 for cache      requirements of some methods.

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实体中的:Content-Location

The Content-Location entity-header field MAY be used to supply the resource location for the entity enclosed in the message when that entity is accessible from a location separate from the requested resource’s URI. A server SHOULD provide a Content-Location for the variant corresponding to the response entity; especially in the case where a resource has multiple entities associated with it, and those entities actually have separate locations by which they might be individually accessed, the server SHOULD provide a Content-Location for the particular variant which is returned.

       Content-Location = "Content-Location" ":"                         ( absoluteURI | relativeURI )

The value of Content-Location also defines the base URI for the entity.

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