JSON extract problem

[alexmnyc]

Guys, something really strange is happening with a basic JSON extract trying to get a zip code value from dispatch's retrieved JSON. I can see that JValue is printing out fine but extract is throwing an exception. I was following the example in lift cookbook http://cookbook.liftweb.net/#FetchURLs

object asJson extends (client.Response => JValue) {

      def apply(r: client.Response) = JsonParser.parse(r.getResponseBody)

    }

val json: Promise[JValue] = Http(url("http://api.ipinfodb.com/v3/" + api.toString + "/?key=" + key + "&ip=" + ipAddress + "&format=" + "json") > asJson)

println(json()) gives this:

JObject(List(JField(statusCode,JString(OK)), JField(statusMessage,JString()), JField(ipAddress,JString(96.56.218.0)), JField(countryCode,JString(US)), J

Field(countryName,JString(UNITED STATES)), JField(regionName,JString(NEW YORK)), JField(cityName,JString(HICKSVILLE)), JField(zipCode,JString(11801)), JField(latitude,JString(4

0.7641)), JField(longitude,JString(-73.519)), JField(timeZone,JString(-04:00))))

case class ZipCode(zipCode: String)

implicit val formats = DefaultFormats

val v = json.map(_.extract[ZipCode])() produces the following stacktrace

net.liftweb.json.MappingException: No usable value for $outer

No usable value for key

Did not find value which can be converted into java.lang.String

        at net.liftweb.json.Meta$.fail(Meta.scala:191)

        at net.liftweb.json.Extraction$.mkValue$1(Extraction.scala:357)

        at net.liftweb.json.Extraction$.net$liftweb$json$Extraction$$build$1(Extraction.scala:317)

        at net.liftweb.json.Extraction$$anonfun$13.apply(Extraction.scala:253)

        at net.liftweb.json.Extraction$$anonfun$13.apply(Extraction.scala:253)

        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)

        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)

        at scala.collection.immutable.List.foreach(List.scala:309)

        at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)

        at scala.collection.AbstractTraversable.map(Traversable.scala:105)

        at net.liftweb.json.Extraction$.instantiate$1(Extraction.scala:253)

        at net.liftweb.json.Extraction$.newInstance$1(Extraction.scala:286)

        at net.liftweb.json.Extraction$.net$liftweb$json$Extraction$$build$1(Extraction.scala:315)

        at net.liftweb.json.Extraction$.net$liftweb$json$Extraction$$extract0(Extraction.scala:366)

        at net.liftweb.json.Extraction$.net$liftweb$json$Extraction$$extract0(Extraction.scala:199)

        at net.liftweb.json.Extraction$.extract(Extraction.scala:43)

        at net.liftweb.json.JsonAST$JValue.extract(JsonAST.scala:300)

        at com.uinsport.model.GeoIP$$anonfun$1.apply(GeoIP.scala:52)

        at com.uinsport.model.GeoIP$$anonfun$1.apply(GeoIP.scala:52)

        at dispatch.Promise$$anon$1.claim(promise.scala:87)

        at dispatch.Promise$$anonfun$result$1.apply(promise.scala:64)

        at scala.util.control.Exception$Catch$$anonfun$either$1.apply(Exception.scala:124)

        at scala.util.control.Exception$Catch$$anonfun$either$1.apply(Exception.scala:124)

        at scala.util.control.Exception$Catch.apply(Exception.scala:102)

        at scala.util.control.Exception$Catch.either(Exception.scala:124)

        at dispatch.Promise$class.result(promise.scala:64)

[alexmnyc]

Lift Version  "2.5-RC5"

Scala 2.10.0

[Richard Dallaway]

Does this help? https://groups.google.com/forum/?fromgroups#!topic/liftweb/2SooiCDVlEg

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[a.mik...@gmail.com]

Yes, thank you! Indeed, this was the very issue.