[spray-json] Duplicate fields in a JsObject

[Christian Lorenz]

Hi,

when trying to parse a json object with spray-json, multiple field names seems to be ok.

E.g.

val x = JsonParser("""{"obj":{"field":"value1","field":"value2"}}""")

println(x)

-> {"obj":{"field":"value2"}}

According to the Json specification this seems fine. 

Is there a way to force a parsing error in such a situation? 

Kind regards,

Christian