pom.xml文件中，添加自定义参数Properties

<properties>
    <powermock.version>1.6.6</powermock.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.powermock</groupId>
        <artifactId>powermock-module-junit4</artifactId>
        <version>${powermock.version}</version>
        <scope>test</scope>
    </dependency>
</dependencies>