原文件：

{"name":"Michael"}
{"name":"Andy", "age":30}
{"name":"Justin", "age":19}

java

package com.dt.sparkApps.sql;

import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaSparkContext;
import org.apache.spark.sql.DataFrame;
import org.apache.spark.sql.SQLContext;

public class DataFrameOps {

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  
  SparkConf conf=new SparkConf().setAppName("DataFrameOps").setMaster("local");
  
  JavaSparkContext sc=new JavaSparkContext(conf);
  
  SQLContext sqlContext=new SQLContext(sc);
  
  //DataFrame df=sqlContext.read().json("hdfs://master:9000/library/people.json");
  DataFrame df=sqlContext.read().json("G://IMFBigData