相同id的数据，进行温度值累加 5.输出当前传感器最新的温度 +10，而时间戳是上一次数据的时间戳 +1，并将结果打印到控制台；

package com.api

import org.apache.flink.api.scala._
object SensorFlinkTemperature {
  def main(args: Array[String]): Unit = {
    val env = ExecutionEnvironment.getExecutionEnvironment
    //    获取文本路径
    val stream = env.readTextFile("D:\\IDEA_Maven\\XiaoWu_Worksoace\\flink_pi_liuchuli\\src\\main\\resources\\temperature")
    val dataSteam = stream.filter(_.nonEmpty).map(data => {
      val dataArr : Array[String] = data.split(",")
      SensorReading(dataArr(0).trim,dataArr(1).trim.toLong,dataArr(2).trim.toDouble)
    })

    dataSteam.map(x=>(x.id,x.temperature)).groupBy(0).sum(1).print()
    dataSteam.map(x=>SensorReading(x.id,x.timestamp+1,x.temperature+10)).print()
  }
}
case class SensorReading(id:String,timestamp:Long,temperature:Double)