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>