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Scala Utility class for parsing and writing Json(Write once and use everywhere )
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| import org.json4s._ | |
| import org.json4s.native.{JsonMethods, Serialization} | |
| object JsonUtility { | |
| implicit val formats = DefaultFormats | |
| def write[T <: AnyRef](value: T): String = Serialization.write(value) | |
| def parse(value: String): JValue = JsonMethods.parse(value) | |
| } | |
| case class Person(name: String, email: String, age: Int) | |
| object JsonApp extends App { | |
| import JsonUtility._ | |
| /** | |
| * case class to json conversion | |
| */ | |
| val person: Person = Person("bob", "[email protected]", 21) | |
| val personJson: String = write(person) | |
| println(personJson) // output => {"name":"bob","email":"[email protected]","age":21} | |
| /** | |
| * Json to case class conversion | |
| */ | |
| val jsonData = | |
| """{"name":"rob","email":"[email protected]","age":25}""" | |
| val personFromJson: Person = parse(jsonData).extract[Person] | |
| println(personFromJson) // output => Person(rob,[email protected],25) | |
| /** | |
| * List of case class to json conversion | |
| */ | |
| val persons = List(Person("bob", "[email protected]", 21), Person("rob", "[email protected]", 25), Person("joy", "[email protected]", 35)) | |
| val personsJson = write(persons) | |
| println(personsJson) // output => [{"name":"bob","email":"[email protected]","age":21},{"name":"rob","email":"[email protected]","age":25},{"name":"joy","email":"[email protected]","age":35}] | |
| } | |
| //sbt dependency | |
| // "org.json4s" %% "json4s-native" % "3.5.0" |
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