spark:将list里的数据保存到本地文件案例

spark:将list里的数据保存到本地文件案例

代码：

package sparkQL

import org.apache.spark.sql.SparkSession

object jsonTest {
  case class Person(id:Int,name:String,age:Int)
  def main(args: Array[String]): Unit = {
    
    val spark = SparkSession.builder().master("local").appName("sql").getOrCreate()
    
    import spark.implicits._
    

    //把内容写入文件
    val list = List(new Person(1,"zhangsan",20),new Person(2,"lisi",20),new Person(3,"zhangwu",50),new Person(4,"limazi",25),new Person(5,"wangermazi",30))

    val df = list.toDF()
    df.write.parquet("D://wc//123")

  }
}