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使用DDD实现社区服务系统示例代码

description

本工程用于演示如何使用DDD理论开发业务系统。通过“社区服务系统”典型场景的代码示例,讲解DDD的落地、实现方法等。对应DDD理论,本工程主要由四大块组成:

  • ui —— User Interface.门面层,对外以各种协议提供服务,该层需要明确定义支持的服务协议、契约等
  • application —— 应用服务层,组合domain层的领域对象和基础设施层的公共组件,根据业务需要包装出多变的服务,以适应多变的业务服务需求。
  • domain —— 业务领域层,是我们最应当关心的一层,也是最多变的一层,需要保证这一层是高内聚的。确保所有的业务逻辑都留在这一层,而不会遗漏到其他层。按照ddd(domain driven design)理论,主要有如下概念构成:entity、value object、domain service、factory、domain event、repository
  • infrastructure —— 基础设施层提供公共功能组件,供controller、service、domain层调用。比如:持久化相关组件、httpclent、validation、checkLogint、exceptionHanler、message resource等。

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通过业务系统的重构实践DDD

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