mockito-core.jar现在依赖于：
                            byte-buddy.jar
                            byte-buddy-agent.jar
                            objenesis.jar
pom.xml加：                         
                     
<dependency>
   <groupId>net.bytebuddy</groupId>
   <artifactId>byte-buddy</artifactId>
   <version>1.8.21</version>
</dependency>
<dependency>
   <groupId>net.bytebuddy</groupId>
   <artifactId>byte-buddy-agent</artifactId>
   <version>1.8.21</version>
   <scope>test</scope>
</dependency>
<dependency>
   <groupId>org.objenesis</groupId>
   <artifactId>objenesis</artifactId>
   <version>2.6</version>
   <scope>test</scope>
</dependency>
<dependency>
   <groupId>org.mockito</groupId>
   <artifactId>mockito-core</artifactId>
   <version>2.21.0</version>
   <scope>test</scope>
</dependency>