目录1 场景描述2 PaymentFactory 基础实现3 PaymentFactory 高级实现4 小结在基于 Spring Boot 的业务开发中，我们有时会遇到这样的场景：即定义了一个通用接口，而该接口拥有多个实现类。在调用这些实现类时，我们通
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