HTTP: Status Code

HTTP: Status 200 - the server successfully returned the page 
HTTP: Status 404 - the requested page does not exist 
HTTP: Status 503 - Service Unavailable

Description:
the HTTP the Status 2xx (Success)
-> status code indicates a successful request is processed;

Detailed code and description:

HTTP Status 200 (success)
-> server has successfully processed the request. Typically, this means that the server provided the requested page.
HTTP Status 201 (was created)
-> request was successful and the server created a new resource.
HTTP Status 202 (accepted)
-> server has accepted the request, but not yet processed.
HTTP Status 203 (Non-authoritative information)
-> server successfully processed the request, but is returning information that may be from another source.
HTTP Status 204 (No Content)
-> server successfully processed the request, but is not returning any content.
HTTP Status 205 (Reset content)
-> server successfully processed the request, but not returning any content.
HTTP Status 206 (part)
-> server successfully processed a partial GET request.

Description:
the HTTP the Status 2xx (Success)
-> status code indicates a successful request is processed;

Detailed code and description:

HTTP Status 200 (success)
-> server has successfully processed the request. Typically, this means that the server provided the requested page.
HTTP Status 201 (was created)
-> request was successful and the server created a new resource.
HTTP Status 202 (accepted)
-> server has accepted the request, but not yet processed.
HTTP Status 203 (Non-authoritative information)
-> server successfully processed the request, but is returning information that may be from another source.
HTTP Status 204 (No Content)
-> server successfully processed the request, but is not returning any content.
HTTP Status 205 (Reset content)
-> server successfully processed the request, but not returning any content.
HTTP Status 206 (part)
-> server successfully processed a partial GET request.

Description:

HTTP Status 4xx (Request error)
-> These status codes indicate that the request may be wrong, preventing the processing server.

Detailed Description Code:
the HTTP the Status 400 (Bad request) 
-> Server requests not understand the syntax.
HTTP Status 401 (Unauthorized) 
-> The request requires authentication. For pages that require login, the server might return this response.
HTTP Status 403 (Forbidden)
-> server rejects the request.
HTTP Status 404 (Not Found) 
-> Web server can not find the request.
HTTP Status 405 (disabling) 
-> method specified in the request is disabled.
HTTP Status 406 (not accepted) 
-> not use the requested content characteristic response requested page.
HTTP Status 407 (Proxy authentication) 
-> This status code 401 (not authorized), but specifies that the requestor should be authorized to use the proxy.
HTTP Status 408 (Request Timeout) 
-> server timed out waiting for the request.
HTTP Status 409 (conflict) 
-> conflict occurs when the server completes the request. The server must include information about the conflict in the response.
HTTP Status 410 (Deleted)
-> If the requested resource has been permanently removed, the server returns this response.
HTTP Status 411 (Length required) 
-> server does not accept the request without a valid Content-Length header field.
HTTP Status 412 (Precondition Failed) 
-> wherein the server is not a prerequisite for the requestor in the request is satisfied.
HTTP Status 413 (Request Entity Too Large) 
-> Server was unable to process the request because the request entity is too large, beyond the server's processing power.
HTTP Status 414 (URI request too long) the URI (typically a URL) request is too long, the server can not handle.
HTTP Status 415 (Unsupported Media Type) 
-> Request format not supported requested page.
HTTP Status 416 (Requested range not meet the requirements) 
-> If the page can not provide the requested range, the server returns this status code.
HTTP Status 417 (not meet expectations) 
-> Server does not meet the "expect" header field of the request requires.

DESCRIPTION
HTTP Status 5xx (Server Error)
-> These status codes indicate internal server error occurred while trying to process the request. These errors may be wrong server itself, not with the request.

Detailed Description and Code:
HTTP Status 500 (internal server error) 
-> server encountered an error and could not complete your request.
HTTP Status 501 (Not implemented) 
-> server does not have to complete the request. For example, the server might not return this code request identification method.
HTTP Status 502 (Bad gateway) 
-> as a gateway or proxy server received an invalid response from the upstream server.
HTTP Status 503 (Service unavailable)
-> server is currently unavailable (because it is overloaded or down for maintenance). Typically, this is a temporary state.
HTTP Status 504 (Gateway Timeout) 
-> as a gateway or a proxy server, but the request is not received from the upstream server.
HTTP Status 505 (HTTP Version not supported)
-> server does not support HTTP protocol version used in the request.

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Origin blog.csdn.net/tojava/article/details/91818612