Spring Boot版本管理

新建的项目导入了：spring-boot-starter-parent

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.7.1</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

spring-boot-starter-parent又依赖了：spring-boot-dependencies

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>2.7.1</version>
  </parent>

spring-boot-dependencies里对使用的依赖版本进行了默认的配置：

 <properties>
    <activemq.version>5.16.5</activemq.version>
    <antlr2.version>2.7.7</antlr2.version>
 </properties>

主程序类：@SpringBootApplication