kafka依赖

<dependency>
   <groupId>org.apache.flink</groupId>
   <artifactId>flink-connector-kafka-0.11_2.12</artifactId>
   <version>1.10.1</version>
</dependency>

核心代码：

import org.apache.flink.api.common.serialization.SimpleStringSchema
import org.apache.flink.streaming.api.scala._
import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer011


import java.util.Properties


/**
* @author shkstart
* @create 2021-07-23 8:06
*/
object Test {
  def main(args: Array[String]): Unit = {
    //1.创建运行环境
    val env = StreamExecutionEnvironment.getExecutionEnvironment


    //2.读取kafka中的数据
    //2.1创建配置对象，这里的对象为java的对象
    val properties = new Properties()
    properties.setProperty("bootstrap.servers","hadoop101:9092")    //hadoop101为自己的kafka地址
    properties.setProperty("group.id","consumer-group")
    val kafavalue = env.addSource(new FlinkKafkaConsumer011[String]("sensor", new SimpleStringSchema(), properties))
    //打印
    kafavalue.print()

    //执行
    env.execute()
  }
}