pom.xml文件中，添加自定义参数Properties

 1 <properties>
 2     <powermock.version>1.6.6</powermock.version>
 3 </properties>
 4 
 5 <dependencies>
 6     <dependency>
 7         <groupId>org.powermock</groupId>
 8         <artifactId>powermock-module-junit4</artifactId>
 9         <version>${powermock.version}</version>
10         <scope>test</scope>
11     </dependency>
12 </dependencies>
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原文地址：https://www.cnblogs.com/acm-bingzi/p/mavenPomProperties.html