Table of Contents of Series Articles
Article directory
1. What design patterns are used in the Spring framework?
Simple factory: A factory class dynamically determines which product class should be created based on the parameters passed in.
Spring中的BeanFactory就是简单工厂模式的体现，根据传入一个唯一的标识来获得Bean对象，但是否是
在传入参数后创建还是传入参数前创建这个要根据具体情况来定。
Factory method:
实现了FactoryBean接口的bean是一类叫做factory的bean。其特点是，spring会在使用getBean()调
用获得该bean时，会自动调用该bean的