Flink (1.13.0) 有界流处理WordCount

import org.apache.flink.streaming.api.scala.{StreamExecutionEnvironment, createTypeInformation}

/**
 * DATE:2022/10/3 13:13
 * AUTHOR：GX
 */
object boundedStreamProcessing {
  def main(args: Array[String]): Unit = {
    val env = StreamExecutionEnvironment.getExecutionEnvironment

    //读取文本文件数据
    val lineDataStream = env.readTextFile("H:\\javademo\\demo\\Flink1.13.0\\src\\main\\resources\\hello.text")
    
    val boundedStream = lineDataStream.flatMap(_.split(" "))
      .map(x => (x, 1))
      .keyBy(0)
      .sum(1)
    boundedStream.print()
    env.execute("boundedStreamProcessing")
  }
}