org.apache.rocketmq rocketmq-all 4.0.0-incubating 4.0.0 jar rocketmq-example rocketmq-example ${project.version} ${project.groupId} rocketmq-client ${project.groupId} rocketmq-srvutil ch.qos.logback logback-classic ch.qos.logback logback-core org.javassist javassist