Spray marshalling adding backslashes

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Bharath Kumar Reddy

Sep 14, 2016, 10:10:57 PM9/14/16
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Am using actor-per-request model to process some requests. Until before spray completes the request, messages are fine. After spray serves the request, backslashes are added into the resulting output.

implicit val errorFormat = jsonFormat1(Error)

implicit object StringFormat extends RootJsonFormat[String] {
  override def read(json: JsValue): String = json.compactPrint

  override def write(obj: String): JsValue = JsString(obj)

def receive = {
  case Response(payload) => {
    println("payload: " + new String(payload, Charset.forName("UTF-8")))
    complete(OK, new String(payload, Charset.forName("UTF-8")))
  case ReceiveTimeout   => complete(GatewayTimeout, Error("Request timeout"))

`println` shows correct value, but after completion backslashes are present in the output:


Need help!

Thanks in advance.

Bharath Kumar Reddy

Sep 14, 2016, 10:15:48 PM9/14/16
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Missed complete block above:

def complete[T <: AnyRef : RootJsonFormat](status: StatusCode, obj: T) = {
  r.complete((status, obj))

Age Mooij

Sep 18, 2016, 8:47:39 AM9/18/16
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Your special String format is circular. It turns a raw input into a rendered String of that input (i.e. the String representation of the JSON, which requires escaped quotes)  and then, when writing back to JSON, that rendered String is just wrapped in a JString again.

I'm also very confused by your use raw byte arrays in creating Strings. What is this Response class for?


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Bharath Kumar Reddy

Sep 21, 2016, 1:11:29 AM9/21/16
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I ran into the issue described here. 

I removed `SprayJsonSupport` and it was giving the right result.

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