Common network status codes

Bold style# Common status codes
200: ok/normal, the server returns the page successfully

301: Moved Permanently redirected permanently.Used when the request URL has been removed.The Location header of the response should contain the URL where the resource is now

302:Found Temporary redirect (temporary transfer).Similar to the 301 status code, but the client SHOULD use the URL given in the Location header to temporarily locate the resource.Future requests should still use the old URL

304: If the client sends a conditional GET request and the request is allowed, and the content of the document (since the last access or according to the conditions of the request) has not changed,The server should return this 304 status code

307: Temporary Redirect, response code 307 is an HTTP status code for redirection (3-header).Similar to 302, the only difference is that the incoming request method is not allowed to change from POST to GET.

308: Permanent Redirect.Similar to 302, with the only difference that the browser is not allowed to redirect a POST request to a GET request.

400: Bad Request Bad Request

401: Unauthorized means that the request sent requires authentication information that has passed HTTP authentication

403: Forbidden denied or forbidden access.Although the server denies or prohibits access, it has understood your request.

404: Not Found, meaning the requested page does not exist, has been deleted, or cannot be accessed.

500: Internal Server Error Unable to process the request, the server encountered an error and could not complete the request.

501: Not Implemented The request method cannot be recognized and the server does not have the capability to complete the request.

503: Service Unavailable