Comments on: Tutorial : Using JSON with Flex 2 and ActionScript 3

By: Joseph Zibara

Joseph Zibara — Thu, 09 Oct 2008 18:46:58 +0000

Can Someone paste the json file, cause I have a feeling it’s not being found.

By: Jesse Donat

Jesse Donat — Thu, 28 Aug 2008 17:43:37 +0000

Same problem as anoop

By: Nathan Pillai

Nathan Pillai — Tue, 08 Jul 2008 22:22:04 +0000

I have a Flex / JSON / DWR issue :

private function onJSONLoad(event:ResultEvent):void
{
var params:Object = {};
params["callCount"] = “1″;
params["page"] = “/index.jsp”;
params["c0-scriptName"] = “Suggest”;
params["c0-methodName"] = “search”;
params["c0-id"] = “0″;

params["c0-param0"] = “string:search-term”;
params["c0-param1"] = “string:goodman group%7C”;
params["c0-param2"] = “number:10″;
params["batchId"] = “0″;
params["scriptSessionId"] = “Nathan-DeskTop”;

trace(params);

trace(”service call begin”);

service.send(params);

trace(”service call end”);
}

The above Action script POSTs data to a Servlet below well :

It fails to post data to a JSON/DWR based service below :

The response from the DWR service is below :
//#DWR-REPLY

if (window.dwr) dwr.engine._remoteHandleBatchException({ name:’org.directwebremoting.extend.ServerException’, message:’The specified call count is not a number: null’ });

else if (window.parent.dwr) window.parent.dwr.engine._remoteHandleBatchException({ name:’org.directwebremoting.extend.ServerException’, message:’The specified call count is not a number: null’ });

Based on the error ‘The specified call count is not a number: null’ – I guess the params["callCount"] = “1″; is not posted to the server. Probably nothing gets posted to the server in the JSON format.

I tried these below, no luck

//service.send( JSON.encode(params) );

//var encoder:JSONEncoder = new JSONEncoder(params);

//service.send( encoder.getString() );

Wondering how to post JSON data, could you please help ?

By: anoop

anoop — Wed, 25 Jun 2008 16:39:59 +0000

how remove the error “call to possibly undefined method JSONDecoder”
i import all the classes like
import com.adobe.serialization.json.JSONDecoder;
but in that after typing import.com.adobe. ,i get only sourceview,does not get serialization in that how to get that…i am flex beginner…if u helping means its a great thing…….

By: Sreeks

Sreeks — Tue, 10 Jun 2008 10:57:39 +0000

Hi Mike,

I am getting the following error when tried to use the code provided in this blog. I appreciate any help is provided to me to sort out this issue.

Error: Unexpected o encountered
at com.adobe.serialization.json::JSONTokenizer/parseError()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONTokenizer.as:546]
at com.adobe.serialization.json::JSONTokenizer/getNextToken()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONTokenizer.as:171]
at com.adobe.serialization.json::JSONDecoder/nextToken()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONDecoder.as:86]
at com.adobe.serialization.json::JSONDecoder/parseObject()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONDecoder.as:142]
at com.adobe.serialization.json::JSONDecoder/parseValue()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONDecoder.as:199]
at com.adobe.serialization.json::JSONDecoder()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONDecoder.as:64]
at com.adobe.serialization.json::JSON$/decode()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSON.as:81]
at TestJSON/onJSONLoad()[D:\Other\Workplace\Flex\SampleProject\src\TestJSON.mxml:15]
at TestJSON/__xmlRpc_result()[D:\Other\Workplace\Flex\SampleProject\src\TestJSON.mxml:34]
at flash.events::EventDispatcher/dispatchEventFunction()

Awaiting for your reply.

Thanks for your precious time.
Sreekanth S

By: Bill

Bill — Mon, 02 Jun 2008 20:48:53 +0000

I’m having the same issue as John Hall. It seems to be an issue with Flex 3 and the corelib ActionScript 3 library.

Anyone found a solution to this?

By: Keith

Keith — Tue, 20 May 2008 17:55:13 +0000

http://weblogs.macromedia.com/mesh/mashedpotato.json seems to be missing, although my application runs fine…

Thanks

By: John Hall

John Hall — Tue, 13 May 2008 20:15:40 +0000

I followed the instructions, even pasted in the code (after notepading it to make sure it’s plain text) and still get the following error … ideas?:

Error: Unexpected < encountered
at com.adobe.serialization.json::JSONTokenizer/parseError()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONTokenizer.as:546]
at com.adobe.serialization.json::JSONTokenizer/getNextToken()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONTokenizer.as:171]
at com.adobe.serialization.json::JSONDecoder/nextToken()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONDecoder.as:86]
at com.adobe.serialization.json::JSONDecoder()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSONDecoder.as:63]
at com.adobe.serialization.json::JSON$/decode()[C:\Development\ContractProjects\Adobe\as3corelib\src\com\adobe\serialization\json\JSON.as:81]
at main/onJSONLoad()[C:\Documents and Settings\Cactusware\My Documents\dspro\JSON Example\src\main.mxml:18]
at main/__service_result()[C:\Documents and Settings\Cactusware\My Documents\dspro\JSON Example\src\main.mxml:32]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.rpc.http.mxml::HTTPService/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\http\mxml\HTTPService.as:275]
at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::resultHandler()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:191]
at mx.rpc::Responder/result()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\Responder.as:41]
at mx.rpc::AsyncRequest/acknowledge()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:74]
at DirectHTTPMessageResponder/completeHandler()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\messaging\channels\DirectHTTPChannel.as:381]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()

By: Armando Leopoldo Keller

Armando Leopoldo Keller — Tue, 06 May 2008 19:05:17 +0000

Hello, when i save the json string(Object -> String) in one database, and i`m trying to get the object (String -> Object), but have and error :
the String = [{"cargo":"teste","tipo":"Químico","epis":"[{"eficaz":"Sim","caepi":"7676","gfip":"76"},{"eficaz":"Sim","caepi":"76763","gfip":"763"}]“,”intensidade”:”67587″,”empresa”:”kmmedicina”,”tecnica”:”68756897″,”fatorderisco”:”7698rg”}]

my code:
var objAt:Object = (re[i] as Object);
trace(objAt)
var id:int = int(objAt.id);
var str:String = String(objAt.riscos);
trace(”STR: “,str);
var tobj:Array = (JSON.decode(str) as Array);

and the error:
Error: Unexpected e encountered
at com.adobe.serialization.json::JSONTokenizer/parseError()[C:\Actionscript\com\adobe\serialization\json\JSONTokenizer.as:546]
at com.adobe.serialization.json::JSONTokenizer/getNextToken()[C:\Actionscript\com\adobe\serialization\json\JSONTokenizer.as:171]
at com.adobe.serialization.json::JSONDecoder/nextToken()[C:\Actionscript\com\adobe\serialization\json\JSONDecoder.as:86]
at com.adobe.serialization.json::JSONDecoder/parseObject()[C:\Actionscript\com\adobe\serialization\json\JSONDecoder.as:169]
at com.adobe.serialization.json::JSONDecoder/parseValue()[C:\Actionscript\com\adobe\serialization\json\JSONDecoder.as:199]
at com.adobe.serialization.json::JSONDecoder/parseArray()[C:\Actionscript\com\adobe\serialization\json\JSONDecoder.as:111]
at com.adobe.serialization.json::JSONDecoder/parseValue()[C:\Actionscript\com\adobe\serialization\json\JSONDecoder.as:202]
at com.adobe.serialization.json::JSONDecoder()[C:\Actionscript\com\adobe\serialization\json\JSONDecoder.as:64]
at com.adobe.serialization.json::JSON$/decode()[C:\Actionscript\com\adobe\serialization\json\JSON.as:81]
at Janelas.Riscos::CadastrarRiscos/recebeTodos()[C:\Users\adm\Documents\Flex Builder 3\Teste KM\src\Janelas\Riscos\CadastrarRiscos.mxml:216]

do you have any idea, of what is this ?

thank you.

By: Jason

Jason — Wed, 16 Apr 2008 19:47:22 +0000

LOL, you know how it is … as soon as you post asking for help you figure it out. Here is the solution for the Flickr JSON feed

private function onJSONLoad(event:ResultEvent):void
{
//get the raw JSON data and cast to String
var rawData:String = String(event.result);

// Rip off the Flickr header
rawData = rawData.split(”jsonFlickrFeed(”).join(”");

//decode the data to ActionScript using the JSON API
var obj:Object = JSON.decode(rawData);

// Access the items node to get the array of items
var arr:Array = (obj.items as Array);

//create a new ArrayCollection passing the de-serialized Array
//ArrayCollections work better as DataProviders, as they can
//be watched for changes.
var dp:ArrayCollection = new ArrayCollection(arr);

//pass the ArrayCollection to the DataGrid as its dataProvider.
grid.dataProvider = dp;

}