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HTTP Status Code Lookup

Page HTTP Status Query Tool Description

Suggest using Ctrl+F to search for status codes.

如果向您的服務(wù)器發(fā)出了某項請求要求顯示您網(wǎng)站上的某個(gè)網(wǎng)頁(yè),那么,您的服務(wù)器會(huì )返回 HTTP 狀態(tài)代碼以響應該請求。
如果向您的服務(wù)器發(fā)出了某項請求要求顯示您網(wǎng)站上的某個(gè)網(wǎng)頁(yè)(例如,當用戶(hù)通過(guò)瀏覽器訪(fǎng)問(wèn)您的網(wǎng)頁(yè)或在 Googlebot 抓取該網(wǎng)頁(yè)時(shí)),那么,您的服務(wù)器會(huì )返回 HTTP 狀態(tài)代碼以響應該請求。

此狀態(tài)代碼提供了有關(guān)請求狀態(tài)的信息,且為 Googlebot 提供了有關(guān)您網(wǎng)站和請求的網(wǎng)頁(yè)的信息。

一些常見(jiàn)的狀態(tài)代碼為:
200 - Server successfully returned webpage
404 - Page Not Found
503 - Service Temporarily Unavailable
Status Status description
1xx (Temporary Responses) Status codes for temporary responses requiring action from the requestor to proceed.
Code description

100 (Continue) The client should continue to send the request. Returning this code means the server has received the first part of the request and is waiting for the rest.

101(切換協(xié)議) 請求者已要求服務(wù)器切換協(xié)議,服務(wù)器已確認并準備進(jìn)行切換。
2xx (Success)

Status code indicating the server has successfully processed the request.

Code description

200 (Success) The server successfully processed the request. Usually, this indicates that the server provided the requested webpage. If your robots.txt file shows this status, it means Googlebot has successfully retrieved the file.

201 (Created) Request successful, new resource created by server.

202 (Accepted) The server has accepted the request but has not yet processed it.

203 (Unauthorized Information) The server successfully processed the request but returned information possibly from another source.

204 (no content) The server successfully processed the request but returned no content.

205 (Reset Content) The server successfully processed the request but did not return any content. Unlike the 204 response, this one requires the requestor to reset the document view (e.g., clear form content for new input).

206(部分內容) 服務(wù)器成功處理了部分 GET 請求。
3xx (Redirected)

To complete the request, further action is required. Typically, these status codes are permanent redirects. Google recommends using fewer than 5 redirects per request. You can use the website management tools to check if Googlebot encounters any issues while crawling the redirected pages. 。

Code description

300 (various options) The server can perform multiple actions based on the request. The server can choose an action according to the user agent or provide a list of actions for the user to select.

301 (Moved Permanently) The requested web page has been permanently moved to a new location. When the server returns this response (in response to a GET or HEAD request), the requestor is automatically redirected to the new location. You should use this code to inform Googlebot that a webpage or website has been permanently moved.

302 (Temporary Redirect) The server is currently responding to requests from web pages at different locations, but the requester should continue using the original location for future requests. Similar to the 301 code for responding to GET and HEAD requests, it automatically redirects the requester to a different location. However, since Googlebot will continue to crawl the original location and index it, you should not use this code to inform Googlebot that a page or website has been moved.

303 (See Other) - The server returns this code when the requester should make separate GET requests to different locations to retrieve the response. For all requests except HEAD, the server automatically redirects to another location.

304(未修改)
自從上次請求后,請求的網(wǎng)頁(yè)未被修改過(guò)。服務(wù)器返回此響應時(shí),不會(huì )返回網(wǎng)頁(yè)內容。

If the web page hasn't changed since the last request from the user, you should configure the server to return this response (known as the If-Modified-Since HTTP header). As the server can inform Googlebot that the page hasn't been modified since the last crawl, this can save bandwidth and costs.

305 (Proxy Required) The requestor can only access the requested webpage through a proxy. If the server returns this response, it will also specify the proxy the requestor should use.

307(臨時(shí)重定向) 服務(wù)器目前正從不同位置的網(wǎng)頁(yè)響應請求,但請求者應繼續使用原有位置來(lái)進(jìn)行以后的請求。此代碼與響應 GET 和 HEAD 請求的 301 代碼類(lèi)似,會(huì )自動(dòng)將請求者轉到不同的位置。但由于 Googlebot 會(huì )繼續抓取原有位置并將其編入索引,因此您不應使用此代碼來(lái)通知 Googlebot 某個(gè)頁(yè)面或網(wǎng)站已被移動(dòng)。
4xx (Request Errors)

These status codes indicate that the request may be erroneous, hindering the server's processing of the request.

Code description

400 (Bad Request) The server does not understand the syntax of the request.

401 (Unauthorized) The request requires authentication. After logging in, the server may return this response for the page.

403 (Forbidden) The server refused the request. If this status code appears when Googlebot tries to crawl valid pages on your site (you can see this code on the Network Crawl page in Google Search Console), it may mean your server or host is blocking Googlebot's access.

404(未找到)
服務(wù)器找不到請求的網(wǎng)頁(yè)。例如,如果請求是針對服務(wù)器上不存在的網(wǎng)頁(yè)進(jìn)行的,那么,服務(wù)器通常會(huì )返回此代碼。
如然而,如果您有 robots.txt 文件而又發(fā)現了此狀態(tài),那么,這說(shuō)明您的 robots.txt 文件可能是命名錯誤或位于錯誤的位置。(該文件應當位于頂級域名上,且應當名為 robots.txt)。

If you see this status on a URL Googlebot attempted to crawl (on the HTTP Error page under the "Diagnostics" tab), it indicates that Googlebot may be following a broken link (either an outdated link or one entered incorrectly) from another page.

405 (Method Not Allowed) Disable the specified method in the request.

406 (Not Acceptable) The requested webpage cannot be served due to the requested content features.

407 (Proxy Authentication Required) Similar to 401 (Unauthorized), this status code indicates the requestor should authenticate using a proxy. If the server returns this response, it will also specify the proxy the requestor should use.

408 Timeout: The server timed out while waiting for the request.

409 (Conflict) The server encountered a conflict while trying to fulfill the request. The server must include information about the conflict in the response. This code may be returned by the server when responding to a PUT request that conflicts with a previous request, along with a list of differences between the two requests.

410 (Deleted) This response is returned when the requested resource has been permanently removed. Similar to 404 (Not Found), it may replace 404 when the resource once existed but no longer does. If the resource has been deleted, use 301 to redirect to a new location.

411 (Length Required) The server will not accept requests that include a header field with an invalid content length.

412 (Precondition Failed) The server did not meet one of the preconditions set by the requestor in the request.

413 (Request Entity Too Large) The server is unable to process the request as the request entity exceeds the server's capacity.

414 (Request-URI Too Long) The requested URI (usually a URL) is too long for the server to process.

415 (Unsupported Media Type) The requested format is not supported by the request page.

416 (Range Not Satisfiable) If the request is for an invalid range of a web page, the server will return this status code.

417(未滿(mǎn)足期望值) 服務(wù)器未滿(mǎn)足"期望"請求標頭字段的要求。
5xx (Server Errors)

These status codes indicate that an internal error occurred while the server was trying to process the request. These errors may be the server's fault, not the request itself.

Code description

500 (Internal Server Error) The server encountered an error and could not complete your request.

501 (Not Implemented) The server lacks the capability to fulfill the request. For example, this code may be returned when the server cannot recognize the request method.

502 Error: The server, acting as a gateway or proxy, received an invalid response from an upstream server.

503 (Service Unavailable): The server is currently unavailable due to overload or maintenance. Typically, this is a temporary condition.

504 Gateway Timeout: The server, acting as a gateway or proxy, did not receive the request from upstream servers in time.

505(HTTP 版本不受支持) 服務(wù)器不支持請求中所使用的 HTTP 協(xié)議版本。

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