两大核心:

  • IoC:控制反转
  • AOP:面向切面编程(一种编程思想)

体系结构image-20200818222621280

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<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
</dependencies>