【网络123】Http返回码

背景：遇到一个http访问相关bug，调试code后发现开发人员针对http返回code进行判断成功与否时，仅仅预定义了一个200返回码。但实际返回201，故导致判断逻辑错误。

参考：https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

了解一下常见的http返回码分类：

HTTP状态码：总共分为5种类型

         1字开头：代表消息类型

         2字开头：代表成功类型

         3字开头：代表重定项类型

         4字开头：代表错误类型

         5字开头：代表服务器错误

200 OKThe request has succeeded. The meaning of the success depends on the HTTP method:

• GET: The resource has been fetched and is transmitted in the message body.
• HEAD: The entity headers are in the message body.
• PUT or POST: The resource describing the result of the action is transmitted in the message body.
• TRACE: The message body contains the request message as received by the server

201 CreatedThe request has succeeded and a new resource has been created as a result. This is typically the response sent after POST requests, or some PUT requests.