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Snailclimb merged 1 commit into from
Mar 17, 2022
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Update spring-design-patterns-summary.md #1624

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2 changes: 1 addition & 1 deletion docs/system-design/framework/spring/spring-design-patterns-summary.md
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Expand Up @@ -115,7 +115,7 @@ public Object getSingleton(String beanName, ObjectFactory<?> singletonFactory) {

AOP(Aspect-Oriented Programming:面向切面编程)能够将那些与业务无关，**却为业务模块所共同调用的逻辑或责任（例如事务处理、日志管理、权限控制等）封装起来**，便于**减少系统的重复代码**，**降低模块间的耦合度**，并**有利于未来的可拓展性和可维护性**。

**Spring AOP 就是基于动态代理的**，如果要代理的对象，实现了某个接口，那么Spring AOP会使用**JDK Proxy**，去创建代理对象，而对于没有实现接口的对象，就无法使用 JDK Proxy 去进行代理了，这时候Spring AOP会使用**Cglib** ，这时候Spring AOP会使用 **Cglib** 生成一个被代理对象的子类来作为代理，如下图所示：
**Spring AOP 就是基于动态代理的**，如果要代理的对象，实现了某个接口，那么Spring AOP会使用**JDK Proxy**，去创建代理对象，而对于没有实现接口的对象，就无法使用 JDK Proxy 去进行代理了，这时候Spring AOP会使用 **Cglib** 生成一个被代理对象的子类来作为代理，如下图所示：

![SpringAOPProcess](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/SpringAOPProcess.jpg)

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