dataframe行变换为列

新建一个 dataFrame ：

val conf = new SparkConf().setAppName("TTyb").setMaster("local")
val sc = new SparkContext(conf)
val spark: SQLContext = new SQLContext(sc)
import org.apache.spark.sql.functions.explode
import org.apache.spark.sql.functions.split
import spark.implicits._
val dataFrame = spark.createDataFrame(Seq(
  (1, "example1", "a|b|c"),
  (2, "example2", "d|e")
)).toDF("id", "name", "content")val conf = new SparkConf().s