Category of self

代码说明：

可以通过类的自省来自动绑定其依赖部分，使得你不必明确指明的属性和构造器。的属性可以通过属性名称或类型匹配来实现自动绑定-Category of self-examination can be automatically bound to rely on part of its so you do not have to explicitly specify the properties and constructor. Attributes can attribute name or the type of match to achieve automatic binding