见下面代码实现
import org.apache.spark.SparkConf
import org.apache.spark.SparkContext
import org.apache.spark.sql.SQLContext
import org.apache.spark.sql.Row
import org.apache.spark.sql.types.DataTypes
import org.apache.spark.sql.types.StructType
import org.apache.spark.sql.types.StringType
import org.apache.spark.sql.types.StructField
/**
* scala sql版本的单词统计
*/
object WordCount {
def main(args:Array[String]):Unit={
//1\获取context
val sc=new SparkContext(new SparkConf().setAppName("word").setMaster("local[1]"))
//2\获取sqlContext
val sqlContext=new SQLContext(sc)
//3\加载RDD
val lines=sc.textFile("dataframeword.txt")
//