RESRFul中的基本概念
Resources 资源
可以说这是RESTFul中最基本的概念了。
A resource is an object with a type, associated data, relationships to other resources, and a set of methods that operate on it. It is similar to an object instance in an object-oriented programming language, with the important difference that only a few standard methods are defined for the resource (corresponding to the standard HTTP GET, POST, PUT and DELETE methods), while an object instance typically has many methods.
资源是一个对象(拥有类型，相关联的数据，关系到其他资源，和一组在其上进行操作的方法)。
资源很类是与面向对象语言中的对象实例，但是资源只有几个方法可以使用。
