环境利用Spark处理 json 文件至SQL

package Eva.Day_06

import org.apache.spark.sql.SparkSession
/**
  * Created by Administrator on 2019/10/22.
  */
//2.0 spark sql统一的入口
object SparkSessionTest {
  def main(args: Array[String]): Unit = {

    System.setProperty("hadoop.home.dir", "E:\\hadoop-2.6.0-cdh5.15.0")

    val ss = SparkSession
      .builder()
      .appName(" spark 2.0")
      .master("local")
      .getOrCreate()

    //获取 SparkContext
    val sc = ss.sparkContext

    //获取 SqlContext
    val ssc = ss.sqlContext



    val df = ss.read.json("D:\\a.json")

    df.createTempView("t_person")

    ss.sql("select * from t_person").show()

  }
}