Schema validation of all the fields in json

https://stackoverflow.com/questions/39355149/how-to-read-json-with-schema-in-spark-dataframes-spark-sql

You can try the following code to read the JSON file based on Schema in Spark 2.2

import org.apache.spark.sql.types.{DataType, StructType}

//Read Json Schema and Create Schema_Json
val schema_json=spark.read.json("/user/Files/ActualJson.json").schema.json

//add the schema
val newSchema=DataType.fromJson(schema_json).asInstanceOf[StructType]

//read the json files based on schema
val df=spark.read.schema(newSchema).json("Json_Files/Folder Path")