Pourquoi ne puis-je pas accéder aux nœuds XML avec des espaces de noms?
https://stackoverflow.com/questions/809722
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03-07-2019 - |
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Je frappe ma tête sur mon bureau depuis des heures pour essayer de comprendre pourquoi je ne peux pas accéder au contenu du dossier entry.author.name? J'ai essayé tous les moyens possibles d'y accéder mais j'ai échoué.
Mais lorsque je parcours tous les nœuds avec xml.children, je vois le nœud auteur.
Je vois que le nœud auteur est en dehors de l'espace de noms atom, mais il n'a pas d'espace de noms similaire aux autres espaces de noms.
package {
import flash.display.Sprite;
public class Gdata extends Sprite
{
private var xml:XML = <entry xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/"
xmlns:gd="http://schemas.google.com/g/2005" xmlns:yt="http://gdata.youtube.com/schemas/2007">
http://www.w3.org/2005/Atom,http://search.yahoo.com/mrss/,http://schemas.google.com/g/2005, http://gdata.youtube.com/schemas/2007
<id>
http://gdata.youtube.com/feeds/api/videos/bwbZJw-C4Jk
</id>
<published>
2009-04-17T19:11:48.000Z
</published>
<updated>
2009-04-29T10:19:50.000Z
</updated>
<category scheme="http://gdata.youtube.com/schemas/2007/categories.cat" term="News" label="News & Politics"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Garofalo"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Olbermann"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="commentary"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Janeane"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="news"/>
<category scheme="http://schemas.google.com/g/2005#kind" term="http://gdata.youtube.com/schemas/2007#video"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Keith"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="analysis"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Party"/>
<category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat" term="Tea"/>
<title type="text">
Janeane Garofalo Calls Tea Party Protesters Racists
</title>
<content type="text">
Janeane Garofalo: http://tinyurl.com/cr6rt8
EPA: http://tinyurl.com/clpyqo
Veterans: http://tinyurl.com/ckbhb6
DHS: http://tinyurl.com/cctf54
DHS2: http://tinyurl.com/dahaxr
John Ziegler: http://tinyurl.com/d7qbo4
Teabagging: http://tinyurl.com/ddskjo
</content>
<link rel="alternate" type="text/html" href="http://www.youtube.com/watch?v=bwbZJw-C4Jk"/>
<link rel="http://gdata.youtube.com/schemas/2007#video.responses" type="application/atom+xml" href="http://gdata.youtube.com/feeds/api/videos/bwbZJw-C4Jk/responses"/>
<link rel="http://gdata.youtube.com/schemas/2007#video.related" type="application/atom+xml" href="http://gdata.youtube.com/feeds/api/videos/bwbZJw-C4Jk/related"/>
<link rel="http://gdata.youtube.com/schemas/2007#mobile" type="text/html" href="http://m.youtube.com/details?v=bwbZJw-C4Jk"/>
<link rel="self" type="application/atom+xml" href="http://gdata.youtube.com/feeds/api/videos/bwbZJw-C4Jk"/>
<author>
<name>
HowTheWorldWorks
</name>
<uri>
http://gdata.youtube.com/feeds/api/users/howtheworldworks
</uri>
</author>
<gd:comments>
<gd:feedLink href="http://gdata.youtube.com/feeds/api/videos/bwbZJw-C4Jk/comments" countHint="2249"/>
</gd:comments>
<media:group>
<media:category label="News & Politics" scheme="http://gdata.youtube.com/schemas/2007/categories.cat">
News
</media:category>
<media:content url="http://www.youtube.com/v/bwbZJw-C4Jk&f=videos&app=youtube_gdata" type="application/x-shockwave-flash" medium="video" isDefault="true" expression="full" duration="236" yt:format="5"/>
<media:content url="rtsp://rtsp2.youtube.com/CiILENy73wIaGQmZ4IIPJ9kGbxMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp" type="video/3gpp" medium="video" expression="full" duration="236" yt:format="1"/>
<media:content url="rtsp://rtsp2.youtube.com/CiILENy73wIaGQmZ4IIPJ9kGbxMYESARFEgGUgZ2aWRlb3MM/0/0/0/video.3gp" type="video/3gpp" medium="video" expression="full" duration="236" yt:format="6"/>
<media:description type="plain">
Janeane Garofalo: http://tinyurl.com/cr6rt8
</media:description>
<media:keywords>
Janeane, Garofalo, Keith, Olbermann, Tea, Party, commentary, analysis, news
</media:keywords>
<media:player url="http://www.youtube.com/watch?v=bwbZJw-C4Jk"/>
<media:thumbnail url="http://i.ytimg.com/vi/bwbZJw-C4Jk/default.jpg" height="90" width="120" time="00:01:58"/>
<media:thumbnail url="http://i.ytimg.com/vi/bwbZJw-C4Jk/1.jpg" height="90" width="120" time="00:00:59"/>
<media:thumbnail url="http://i.ytimg.com/vi/bwbZJw-C4Jk/3.jpg" height="90" width="120" time="00:02:57"/>
<media:thumbnail url="http://i.ytimg.com/vi/bwbZJw-C4Jk/0.jpg" height="240" width="320" time="00:01:58"/>
<media:title type="plain">
Janeane Garofalo Calls Tea Party Protesters Racists
</media:title>
<yt:duration seconds="236"/>
</media:group>
<gd:rating average="3.9231105" max="5" min="1" numRaters="2289" rel="http://schemas.google.com/g/2005#overall"/>
<yt:statistics favoriteCount="304" viewCount="33463"/>
</entry>;
namespace atom = "http://www.w3.org/2005/Atom"
namespace media ="http://search.yahoo.com/mrss/";
namespace gd = "http://schemas.google.com/g/2005";
namespace yt = "http://gdata.youtube.com/schemas/2007";
public function Gdata()
{
var atom:Namespace = new Namespace();
trace("0",xml.children()[22]);
trace("1",xml.inScopeNamespaces());
trace("2",xml..media::group);
trace("3",xml..yt::statistics.@favoriteCount);
trace("4",xml..yt::duration.@seconds);
trace("5",xml..author ); // why?????????
trace("6",xml.author ); // why?????????
var x:int = 0;
for each (var i in xml.children())
{
if(i.localName() == 'author')
{
trace("author", i);
}
}
}
}
}
La solution
Essayez ceci ...
public function Gdata()
{
var atom:Namespace = new Namespace("http://www.w3.org/2005/Atom");
var media:Namespace = new Namespace("http://search.yahoo.com/mrss/");
var gd:Namespace = new Namespace("http://schemas.google.com/g/2005");
var yt:Namespace = new Namespace("http://gdata.youtube.com/schemas/2007");
default xml namespace = atom; // IMPORTANT
trace("0",xml.children()[22]);
trace("1",xml.inScopeNamespaces());
trace("2",xml..media::group);
trace("3",xml..yt::statistics.@favoriteCount);
trace("4",xml..yt::duration.@seconds);
trace("5",xml..author ); // why?????????
trace("6",xml.author ); // why?????????
var x:int = 0;
for each (var i in xml.children())
{
if(i.localName() == 'author')
{
trace("author", i);
}
}
}
Autres conseils
vous pouvez aussi simplement supprimer complètement l’espace de noms ... voici la meilleure solution que j’ai trouvée (elle transforme simplement les détails de l’espace de noms en attributs):
public function removeNS(data:XML):XML {
var myXML;
try {
var modified:String = data.toString().replace("xmlns=", "xmlns:default=");
var pattern:RegExp = new RegExp(":(?!/)", "gi");
var transmuted:String = modified.replace(pattern, "_");
myXML = new XML(transmuted);
} catch (e:Error) {
myXML = data;
}
return myXML;
}
Quelque part dans votre fichier mxml, vous avez besoin de l'extrait de code suivant (avant de travailler avec votre document XML)
<mx:Script>
<![CDATA[
private namespace atom = "http://www.w3.org/2005/Atom";
use namespace atom; // This is the important line right here!!!!
]]>
</mx:Script>
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