[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.3:compile (default-compile) on project JavaWebSocket: Fatal error compiling: 无效的目标发行版: 1.8 -> [Help 1]

//本地测试模式           
    LocalCluster cluster = new LocalCluster();
    cluster.submitTopology("firstTopo", conf, builder.createTopology());
    Utils.sleep(100000);
    cluster.killTopology("firstTopo");
    cluster.shutdown();
//集群提交模式
    StormSubmitter.submitTopology("firstTopo", conf, builder.createTopology());

//本地测试模式           
LocalCluster cluster = new LocalCluster();
    cluster.submitTopology("firstTopo", conf, builder.createTopology());
    Utils.sleep(100000);
    cluster.killTopology("firstTopo");
    cluster.shutdown();
    //集群提交模式
    StormSubmitter.submitTopology("firstTopo", conf, builder.createTopology());

kafka中的topic不新建也可以使用
如果不执行 ./kafka-topics.sh --create --zookeeper hadoop01:2181 --replication-factor 1 --partitions 1 --topic test
直接执行下述两条命令：
kafka生产者客户端命令
./kafka-console-producer.sh --broker-list hadoop01:9092 --topic test
kafka消费者客户端命令
./kafka-console-consumer.sh -zookeeper hadoop01:2181 --from-beginning --topic test
也可以起到新建topic的目的