Difficulté d'accès à l'API de recherche Google avec Flex

Question

J'essaie d'obtenir le nombre de liens entrants vers une page via l'API de recherche Google.

Il ne fonctionne pas (juste retour nul)

Voici le code

<?xml version="1.0" encoding="utf-8"?> 
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init();" width="320" height="480" backgroundGradientColors="115115" backgroundGradientAlphas=".2" backgroundAlpha=".2" dropShadowEnabled="false"> 

<mx:Script> 
<![CDATA[ 
    // 
    // Author: Wayne IV Mike 
    // Project: JSwoof - The Flex JSON library. 
    // Description: Formated JSON loaded from txt file. 
    // Date: 31st March 2009. 
    // Contact: wayne.ivor@googlemail.com , dappa2000@blueyonder.co.uk 
    // 

    import json.*; 
    import mx.controls.Alert; 

    public function loadFile4(urlLink:String):void 
    { 
    var request:URLRequest = new URLRequest(urlLink); 
    var urlLoad:URLLoader = new URLLoader(); 

    urlLoad.addEventListener(Event.COMPLETE, fileLoaded4); 
    urlLoad.load(request); 
    } 

    private function fileLoaded4(event:Event):void 
    { 
    var jObj:Object = JParser.decode(event.target.data); //Decode JSON from text file here. 

    var jStr:String = JParser.encode(jObj); 

    if(jStr != null && jStr != "") 
    { 
    var LinkTemp:String = jObj.estimatedResultCount; 

    txtLinks.text = "Google Links " + LinkTemp; 
    trace(event.target.data); 


    } 


    } 

    /********************************************************************/ 

    private function LinkLookup():void 
    { 


    loadFile4("http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=link:twitter.com/" + NameSearch.text); 



} 


]]> 
</mx:Script> 


<mx:TextInput x="17" y="86" id="NameSearch" text="cnnbrk" width="229" height="30" fontSize="16" fontWeight="bold" cornerRadius="10" shadowDirection="center" shadowDistance="5"/> 
<mx:Button x="253" y="85" label="Find" id="GoSearch" click="LinkLookup()" height="31"/> 
<mx:Label text="Links" id="txtLinks" width="233" textAlign="left" color="#FFFFFF" fontSize="14" height="21"/> 

</mx:Application> 

Désolé pour le format laid.

J'ai ajouté une trace (event.target.data); et mis à jour le code ci-dessus.

Ceci est le résultat -

[SWF] C:/Documents and Settings/Robert/My Documents/Flex Builder 3/.metadata/.plugins/com.adobe.flash.profiler/ProfilerAgent.swf - 17,508 bytes after decompression 
[SWF] C:\Documents and Settings\Robert\My Documents\Flex Builder 3\Formated\bin-debug\Formated.swf - 781,950 bytes after decompression 
[Unload SWF] C:/Documents and Settings/Robert/My Documents/Flex Builder 3/.metadata/.plugins/com.adobe.flash.profiler/ProfilerAgent.swf 
{"responseData": {"results":[{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/britishredneck","url":"http://twitter.com/britishredneck","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:4pQXnMQCZA4J:twitter.com","title":"Martyn Jones (BritishRedneck) on Twitter","titleNoFormatting":"Martyn Jones (BritishRedneck) on Twitter","content":"Finally found a free and simple way to expand my reach on Twitter. A nice 20 second process. http://tpq.me/5gbrg #twpq 3:13 PM Jul 18th, 2009 from API \u003cb\u003e...\u003c/b\u003e"},{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/dshlian/favorites","url":"http://twitter.com/dshlian/favorites","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:79qm5Pz7O5QJ:twitter.com","title":"Twitter","titleNoFormatting":"Twitter","content":"Twitter is without a doubt the best way to share and discover what is happening right now."},{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/rosannepeterson","url":"http://twitter.com/rosannepeterson","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:q11IcnW9l30J:twitter.com","title":"Rosanne Peterson (rosannepeterson) on Twitter","titleNoFormatting":"Rosanne Peterson (rosannepeterson) on Twitter","content":"Tx.All is well. Looking forward to the holday. Perhaps after will be time for certification! 8:14 AM Dec 23rd, 2009 from txt; I am also reading \u0026quot;How I \u003cb\u003e...\u003c/b\u003e"},{"GsearchResultClass":"GwebSearch","unescapedUrl":"http://twitter.com/MRSalesTraining","url":"http://twitter.com/MRSalesTraining","visibleUrl":"twitter.com","cacheUrl":"http://www.google.com/search?q\u003dcache:uBNGhud0vfEJ:twitter.com","title":"Medrep (MRSalesTraining) on Twitter","titleNoFormatting":"Medrep (MRSalesTraining) on Twitter","content":"Working away on Cardiovascular Medicine Module - heavy stuff for a Sunday evening!! 11:09 AM Nov 8th, 2009 from web; Today\u0026#39;s Student is tomorrow\u0026#39;s Medical \u003cb\u003e...\u003c/b\u003e"}],"cursor":{"pages":[{"start":"0","label":1},{"start":"4","label":2},{"start":"8","label":3},{"start":"12","label":4},{"start":"16","label":5},{"start":"20","label":6},{"start":"24","label":7},{"start":"28","label":8}],"estimatedResultCount":"64","currentPageIndex":0,"moreResultsUrl":"http://www.google.com/search?oe\u003dutf8\u0026ie\u003dutf8\u0026source\u003duds\u0026start\u003d0\u0026hl\u003den\u0026q\u003dlink%3Atwitter.com%2Fgenericmedlist"}}, "responseDetails": null, "responseStatus": 200} 

Ainsi, le retour de données de la requête est correcte, et la difficulté réside dans l'accès à la « estimatedResultCount » à la fin des données JSON.

Toute aide serait grandement appréciée!

Answer 1

Je n'ai pas utilisé JParser, j'utilise généralement corelib pour l'analyse JSON. Cela dit, vous accédez simplement incorrectement à la valeur. Essayez d'utiliser cette fonction.

private function fileLoaded4(event:Event):void 
{ 
    var jObj:Object = JSON.decode(event.target.data).responseData; 

    if (jObj.results) { 
    var LinkTemp:String = jObj.cursor.estimatedResultCount; 

    txtLinks.text = "Google Links " + LinkTemp; 
    } 
} 

Comme une note de côté, je vous recommande d'utiliser http://code.google.com/p/googleas3api/ pour accéder à Google APIs avec flex.