scala - Play Framework automatic JSON marshalling -

i'm looking set straight on understanding of how play framework handles conversion of scala objects json , vice versa (specifically restful apis):

i've read on , on again across web using play's json support nothing pleasure. coming spring have built in httpmessageconverter (specifically mappingjacksonhttpmessageconverter) auto marshall requests , responses in controllers hardly effort.

play, on other hand, (it appears) requires write read , write converters every class intend marshal. e.g. (from play docs):

implicit val locationwrites: writes[location] = (   (jspath \ "lat").write[double] ,   (jspath \ "long").write[double] )(unlift(location.unapply)) 

to me seems tedious when compared built in automatic message converting capabilities of spring. understanding play uses jackson under hood can same accomplished scala / play, or perhaps premise flawed?

you can use writes macro:

implicit val locationwrites = json.writes[location] 

i've never used spring, according the docs mappingjacksonhttpmessageconverter, work typed beans , untyped hashmap instances. play! has built in writes instances scala map instances, , writes macro can create instances case classes, functionality similar. however, guess case classes have less boilerplate typed bean, line create implicit writes instance.