As an Internet developer for some HTTP status returned by the server must be well aware of the meaning, only to find out the status code eleven, handy various problems encountered in the work it can handle. Well, let's take a look at the more common HTTP status code it!
| status code | category | the reason |
|---|---|---|
| 1xx | Informational (informational status codes) | The received request is being processed |
| 2xx | Success (success status code) | Normal requests processed |
| 3xx | Redirection (Redirect Status Code) | Additional operation required to complete the request |
| 4xx | Client Error (Client Error Status Code) | The server can not process the request |
| 5xx | Server Error (Server Error status code) | Server processes the request error |
| status code | status | Corresponding meaning |
|---|---|---|
| 200 | success | The server successfully processed the request. Typically, this means that the server provided the requested page. |
| 201 | Has been created | Request was successful and the server created a new resource |
| 202 | accepted | Request was successful and the server created a new resource |
| 203 | Unauthorized information | The server successfully processed the request, but is returning information that may be from another source |
| 204 | No content | Server successfully processed the request, but is not returning any content |
| 205 | Reset Content | Server successfully processed the request, but is not returning any content |
| 206 | Part | The server successfully processed a partial GET request |
| 300 | multiple choices | For the request, the server has several actions. The server may operate a requestor (user agent) selected in accordance with, or provide a list of actions for the requester to choose |
| 301 | Moved Permanently | The requested page has been permanently moved to a new location. When the server returns this response (response to a GET or HEAD request), it automatically forwards the requestor to the new location |
| 302 | Temporary Mobile | Currently web server in response to a request from a different location, but the requestor should continue to use the original location for future requests |
| 303 | View other locations | When the requester to retrieve the response should separate GET request to a different location, the server returns this code |
| 304 | Unmodified | Since the last request, the requested page has not been modified. When the server returns this response, it does not return to the page content |
| 305 | Use a proxy | The requestor can only access the requested page using a proxy. If the server returns this response, said requester use the agent |
| 307 | Temporary Redirect | Currently web server in response to a request from a different location, but the requestor should continue to use the original location for future requests |
| 400 | Bad Request | The server does not understand the syntax of the request |
| 401 | unauthorized | The request requires authentication. For pages that require login, the server might return this response |
| 403 | Ban | The server is refusing the request |
| 404 | Not found | Web server can not find the requested |
| 405 | Methods disabled | A method specified in the request |
| 406 | Does not accept | You can not use the requested content characteristics in response to the requested page |
| 407 | Proxy authentication required | This status code 401 (not authorized), but specifies that the requestor should be authorized to use the agent |
| 408 | Request timed out | A timeout occurred while waiting for the request server |
| 409 | conflict | Server encountered a conflict fulfilling the request. The server must include information about the conflict in the response |
| 410 | deleted | If the requested resource has been permanently removed, the server returns this response |
| 411 | Length required | Server will not accept without a valid Content-Length header field of the request |
| 412 | Precondition Failed | Wherein the server is not a prerequisite for the requestor in the request satisfies |
| 413 | Request Entity Too Large | The server can not handle the request because it is too large for the server to handle the |
| 414 | Request URI is too long | The request URI (typically, a URL) is too long, the server can not handle |
| 415 | Unsupported media type | Requested format is not supported page request |
| 416 | Request range not meet the requirements | If the page can not provide the requested range, the server returns this status code |
| 417 | Unmet expectations | Server not meet the "expect" request-header field requirements |
| 500 | Internal server error | The server encountered an error and can not fulfill the request |
| 501 | Not yet implemented | The server does not have to complete the request. For example, this code may be returned when the server can not recognize the request method |
| 502 | Bad Gateway | As a gateway or a proxy server, the server received an invalid response from the upstream |
| 503 | Service Unavailable Shi | Server is currently unavailable (because it is overloaded or down for maintenance). Typically, this is a temporary state |
| 504 | Gateway Timeout | As a gateway or proxy server, but the request is not received from the upstream server |
| 505 | HTTP version not supported | The server does not support the HTTP protocol version used in the request |