1. 工厂模式 :工厂模式更像是一个流水线工厂, 识别创建型的需求, 从业务需求里面找那些稳定的规则的有序的职责。然后将职责封装到不同的抽象类里面去。再最后,安排一个中心化的类去管理这些抽象类集合 2.
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