How to respond with a pretty-printed JSON object using play framework?
Play framework has pretty printing support built-in:
import play.api.libs.json.JsonJson.prettyPrint(aJsValue)So in your case, it would be sufficient to do the following:
def handleGET(path:String) = Action { implicit request => val json = doSomethingThatReturnsAJson(path, request) request.getQueryString("pretty") match { case Some(_) => Ok(Json.prettyPrint(json)).as(ContentTypes.JSON) case None => Ok(json) }}
You can use Gson to pretty print Json string, don't know about scala; but here is a Java example which you can convert to scala and use it:
Gson gson = new GsonBuilder().setPrettyPrinting().create();String jsonStr = gson.toJson(obj);System.out.println(jsonStr);