web services - How to retrieve JSON result after file upload via actionscript -

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i know how upload file using action script

see upload zip file using http post via actionscript 3.0 details.

code replicated here:

var urlrequest:urlrequest = new urlrequest(publish_zip_file_url); // set method=post urlrequest.method = urlrequestmethod.post;  var params:urlvariables = new urlvariables();  params['data[file][title]'] = 'title1'; params['data[file][description]'] = 'desc';  // include non file params , data urlrequest.data = params;   // upload file // how set form field expected file upload file.upload(urlrequest, "data[file][filename]");

the web app responsible accepting file upload return json string containing details such file size, id number, etc.

how access json result string in actionscript?

from filereference docs, need add handler filereference instance uploadcompletedata event:

import flash.events.*;  // upload file // how set form field expected file upload file.addeventlistener(dataevent.upload_complete_data, uploadcompletedatahandler); file.upload(urlrequest, "data[file][filename]");  private function uploadcompletedatahandler(event:dataevent):void   {      trace("uploadcompletedata data: " + event.data); }

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