代表性国家转移（REST）中的“国家转移”是指什么？ [英] What does “state transfer” in Representational State Transfer (REST) refer to?
问题描述
Representational State Transfer中的州转移是指什么？
What does the State Transfer in Representational State Transfer refer to?
找到一些关于此的解释（例如这里）但我仍然不明白。例如，在文章中，它被称为
Found some explanations about this (e.g. here) but I still don't understand. For example in the article it is said
该表示将客户端应用程序置于一个状态。
The representation places the client application in a state.
为什么？状态（据我理解，类似于会话）与资源的表示有什么关系？
Why? What does state (as I understand it, something like a session) have to do with a representation of a resource?
推荐答案
为什么？状态（据我理解，类似会话）与资源的表示有什么关系？
Why? What does state (as I understand it, something like a session) have to do with a representation of a resource?
一个对象有属性（或状态）和行为（或方法）。
An object has attributes (or state) and behaviors (or methods).
如果我想将对象从桌面移动到服务器，我必须执行以下操作：
If I want to move an object from my desktop to a server I have to do the following:
-
创建对象状态的表示。
Create a representation of the state of the object.
将该表示从桌面转移到服务器。
Transfer that representation from the desktop to the server.
我不转移的方法。我在两台机器上安装了相同的类定义。
The methods I don't transfer. I install the same class definition on both machines.
因此，REST是关于创建对象当前状态的表示，以便它可以转移到另一个服务器的对象可以重建。
So, REST is about creating a representation of the object's current state so it can be transferred to another server from which the object can be reconstructed.
我们只发送对象的状态 - 属性。我们必须创建该状态的外部序列化表示。
We only send the state -- the attributes -- of the object. And we have to create an external, serialized representation of that state.
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