解决如下:
pom.xml 增加:
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>3.0.5</version>
</dependency>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-digest</artifactId>
<version>1.0</version>
</dependency>