目录搜索
GuidesAccess control CORSAuthenticationBrowser detection using the user agentCachingCaching FAQCompressionConditional requestsConnection management in HTTP 1.xContent negotiationContent negotiation: List of default Accept valuesCookiesCSPMessagesOverviewProtocol upgrade mechanismProxy servers and tunnelingProxy servers and tunneling: Proxy Auto-Configuration (PAC) filePublic Key PinningRange requestsRedirectionsResources and specificationsResources and URIsResponse codesServer-Side Access ControlSessionGuides: BasicsBasics of HTTPChoosing between www and non-www URLsData URIsEvolution of HTTPIdentifying resources on the WebMIME TypesMIME types: Complete list of MIME typesCSPContent-Security-PolicyContent-Security-Policy-Report-OnlyCSP: base-uriCSP: block-all-mixed-contentCSP: child-srcCSP: connect-srcCSP: default-srcCSP: font-srcCSP: form-actionCSP: frame-ancestorsCSP: frame-srcCSP: img-srcCSP: manifest-srcCSP: media-srcCSP: object-srcCSP: plugin-typesCSP: referrerCSP: report-uriCSP: require-sri-forCSP: sandboxCSP: script-srcCSP: style-srcCSP: upgrade-insecure-requestsCSP: worker-srcHeadersAcceptAccept-CharsetAccept-EncodingAccept-LanguageAccept-RangesAccess-Control-Allow-CredentialsAccess-Control-Allow-HeadersAccess-Control-Allow-MethodsAccess-Control-Allow-OriginAccess-Control-Expose-HeadersAccess-Control-Max-AgeAccess-Control-Request-HeadersAccess-Control-Request-MethodAgeAllowAuthorizationCache-ControlConnectionContent-DispositionContent-EncodingContent-LanguageContent-LengthContent-LocationContent-RangeContent-TypeCookieCookie2DateDNTETagExpectExpiresForwardedFromHeadersHostIf-MatchIf-Modified-SinceIf-None-MatchIf-RangeIf-Unmodified-SinceKeep-AliveLarge-AllocationLast-ModifiedLocationOriginPragmaProxy-AuthenticateProxy-AuthorizationPublic-Key-PinsPublic-Key-Pins-Report-OnlyRangeRefererReferrer-PolicyRetry-AfterServerSet-CookieSet-Cookie2SourceMapStrict-Transport-SecurityTETkTrailerTransfer-EncodingUpgrade-Insecure-RequestsUser-AgentUser-Agent: FirefoxVaryViaWarningWWW-AuthenticateX-Content-Type-OptionsX-DNS-Prefetch-ControlX-Forwarded-ForX-Forwarded-HostX-Forwarded-ProtoX-Frame-OptionsX-XSS-ProtectionMethodsCONNECTDELETEGETHEADMethodsOPTIONSPATCHPOSTPUTStatus100 Continue101 Switching Protocols200 OK201 Created202 Accepted203 Non-Authoritative Information204 No Content205 Reset Content206 Partial Content300 Multiple Choices301 Moved Permanently302 Found303 See Other304 Not Modified307 Temporary Redirect308 Permanent Redirect400 Bad Request401 Unauthorized403 Forbidden404 Not Found405 Method Not Allowed406 Not Acceptable407 Proxy Authentication Required408 Request Timeout409 Conflict410 Gone411 Length Required412 Precondition Failed413 Payload Too Large414 URI Too Long415 Unsupported Media Type416 Range Not Satisfiable417 Expectation Failed426 Upgrade Required428 Precondition Required429 Too Many Requests431 Request Header Fields Too Large451 Unavailable For Legal Reasons500 Internal Server Error501 Not Implemented502 Bad Gateway503 Service Unavailable504 Gateway Timeout505 HTTP Version Not Supported511 Network Authentication RequiredStatus
文字

Expires标头包含的日期/时间之后,响应被视为失效。

无效的日期(如值0)代表过去的日期,表示资源已过期。

如果Cache-Control响应中包含带有“max-age”或“s-max-age”指令的Expires标题,则标题将被忽略。

Header type

Response header

Forbidden header name

no

CORS-safelisted response-header

yes

语法

Expires: <http-date>

指令

<http-date>

一个 HTTP 日期时间戳。

例子

Expires: Wed, 21 Oct 2015 07:28:00 GMT

规范

Specification

Title

RFC 7234, section 5.3: Expires

Hypertext Transfer Protocol (HTTP/1.1): Caching

浏览器兼容性

Feature

Chrome

Firefox

Edge

Internet Explorer

Opera

Safari

Basic Support

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

Feature

Android

Chrome for Android

Edge mobile

Firefox for Android

IE mobile

Opera Android

iOS Safari

Basic Support

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

上一篇:下一篇: