Spring Application.xml Bean tag attributes

id: Specifies the unique name of the container

class: full class name

abstract: true-Specifies that this class is a virtual method and cannot be fetched, only inherited

parent: inherited from a class

depends-on: change the order and create it after depends-on

scope：

　　　　propertype: multiple instances

　　　　　　　　Container does not create Bean by default

　　　　　　　　Each acquisition will create a new Bean

　　　　singleton: single instance (default)

　　　　　　　　Create objects and save them in the container before the container starts

　　　　　　　　Get an object any time