[Rocketmq-Spark] how can I get what I send to the consumer

I try the command "mvn clean install dependency:copy-dependencies" but it failed .
Did anyone else have the same problem?
**"Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test (default-test)
on project rocketmq-spark: There are test failures."**
I send Message successfully, but I can't get the content what in the message. I tried to use `getBody().toString`,but it turned out that the task can't be serialize. I think maybe the Message class is not a serialized class ,but does it is.So does anyone solve it?

Start by reproducing `mvn clean install dependency:copy-dependencies` and inspect the Maven Surefire test-failure output. Then trace the RocketMQ-Spark consumer path around `getBody().toString()` and message serialization; done means the sent message content can be read by the consumer and the relevant tests pass.

Written by the indexing model from the issue text.