maven中properties标签定义变量

在pom.xml定义properties标签

<properties>  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  <spring.version>3.2.9</spring.version>  <developer.organization><![CDATA[xy公司]]></developer.organization> </properties>

引用定义的标签

<dependency>  <groupId>org.springframework</groupId>  <artifactId>spring-core</artifactId>  <version>${spring.version}</version> </dependency>

<dependency>  <groupId>org.springframework</groupId>  <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency>