maven中properties標簽定義變量

在pom.xml中添加依賴時語法如下

<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-core</artifactId>
 <version>1.2.6</version>
</dependency>
<dependency>
 <groupId>org.springframework</groupId>
 <artifactId>spring-aop</artifactId>
 <version>1.2.6</version>
</dependency>

有這樣一個問題，在spring的依賴中，我們需要引用一系列版本的spring，如版本1.2.6。每次都寫不利於維護

解決辦法:

在pom.xml定義properties標簽

<properties>
 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <spring.version>1.2.6</spring.version>
 <developer.organization><![CDATA[xy公司]]></developer.organization>
</properties>

<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>