如何使用SAX解析rss-feed，解析其他方法？

我想解析多个属性，但没有成功。如何使用SAX解析rss-feed，解析其他方法？

这些属性我很解析得好：

<id>..</id> 
<published>..</published> 
<content>..</content> 
<title>..</title>

我在解析XML和数据，我需要的图像： enter image description here 但我需要与标签的属性：

<media:thumbnail url='http://ww.../> </media:thumbnail> 
<media:content url='http://ww.../> </<media:content>

我在某处读到萨克斯解析不支持这样做，我不明白这是真的。

我使用的代码进行解析：

public class YoutubePARSER { 
    private static final String LOGTAG = "LogsAndroid"; 
    private ArrayList<YoutubeVO> videos = new ArrayList<YoutubeVO>(); 
    private YoutubeVO video; 
    private URL rssUrl; 
    final String myString = "http://www.w3.org/2005/Atom"; 

    SAXParserFactory parser = SAXParserFactory.newInstance(); 

public YoutubePARSER(String url) 
{ 
    try 
    { 
     this.rssUrl = new URL(url); 
    } 
    catch (MalformedURLException e) 
    { 
     throw new RuntimeException(e); 
    } 
} 

public ArrayList<YoutubeVO> parse() 
{ 
    RootElement root = new RootElement(myString, "feed"); 
      Element itemPlace = root.getChild(myString, "entry"); 
      itemPlace.setStartElementListener(new StartElementListener(){ 
       public void start(Attributes attrs){ 
        video = new YoutubeVO(); 
       } 
      }); 

     itemPlace.setEndElementListener(new EndElementListener(){ 
      public void end() { 
       videos.add(video); 
      } 
     }); 

     itemPlace.getChild(myString, "id").setEndTextElementListener(
       new EndTextElementListener(){ 
        public void end(String body) { 
         video.setId(body); 
        } 
      }); 

     itemPlace.getChild(myString, "published").setEndTextElementListener(
    new EndTextElementListener(){ 
     public void end(String body) { 
      video.setPublished(body); 
     } 
});

我试图解析下列方式领域，没有成功：

itemPlace.getChild(myString, "media:thumbnail").setEndTextElementListener(
itemPlace.getChild(myString, "media").setEndTextElementListener(
itemPlace.getChild(myString, "thumbnail").setEndTextElementListener(
itemPlace.getChild(myString, "media:thumbnail url").setEndTextElementListener(

任何解决方案？

谢谢！

来源

2012-08-23 jlopez

我的解决方案：

public class DomParserSampleActivity extends Activity { 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     ScrollView mScrView1 = new ScrollView(this); 

     /** Create a new layout to display the view */ 
     LinearLayout layout = new LinearLayout(this); 
     layout.setOrientation(1); 

     /** Create a new textview array to display the results */ 
     TextView id[]; 
     TextView published[]; 
     TextView content[]; 
     TextView title[]; 

     TextView mediacontent[]; 
     TextView mediathumbnail[]; 

     try { 
      URL url = new URL(
        "http://gdata.youtube.com/feeds/api/users/estudiosabiertostv/uploads"); 
      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
      DocumentBuilder db = dbf.newDocumentBuilder(); 
      Document doc = db.parse(new InputSource(url.openStream())); 
      doc.getDocumentElement().normalize(); 

      NodeList nodeList = doc.getElementsByTagName("entry"); 

      /** Assign textview array length by arraylist size */ 
      id = new TextView[nodeList.getLength()]; 
      published = new TextView[nodeList.getLength()]; 
      content = new TextView[nodeList.getLength()]; 
      title = new TextView[nodeList.getLength()]; 
      mediacontent = new TextView[nodeList.getLength()]; 
      mediathumbnail = new TextView[nodeList.getLength()]; 

      for (int i = 0; i < nodeList.getLength(); i++) { 

       Node node = nodeList.item(i); 

       id[i] = new TextView(this); 
       published[i] = new TextView(this); 
       content[i] = new TextView(this); 
       title[i] = new TextView(this); 

       Element fstElmnt = (Element) node; 

       NodeList idList = fstElmnt.getElementsByTagName("id"); 
       Element idElement = (Element) idList.item(0); 
       idList = idElement.getChildNodes(); 
       id[i].setText("Id is = " 
         + ((Node) idList.item(0)).getNodeValue()); 

       Log.v("TAG","id: "+idList.item(0).getNodeValue()); 

       NodeList publishedList = fstElmnt 
         .getElementsByTagName("published"); 
       Element publishedElement = (Element) publishedList.item(0); 
       publishedList = publishedElement.getChildNodes(); 
       published[i].setText("published is = " 
         + ((Node) publishedList.item(0)).getNodeValue()); 

       Log.v("TAG","published: "+publishedList.item(0).getNodeValue()); 

       NodeList contentList = fstElmnt.getElementsByTagName("content"); 
       Element contentElement = (Element) contentList.item(0); 
       contentList = contentElement.getChildNodes(); 
       content[i].setText("content is = " 
         + ((Node) contentList.item(0)).getNodeValue()); 

       Log.v("TAG","content: "+contentList.item(0).getNodeValue()); 

       NodeList titleList = fstElmnt.getElementsByTagName("title"); 
       Element titleElement = (Element) titleList.item(0); 
       titleList = titleElement.getChildNodes(); 
       title[i].setText("title is = " 
         + ((Node) titleList.item(0)).getNodeValue()); 

       Log.v("TAG","titulo: "+titleList.item(0).getNodeValue()); 

       NodeList nodeList1 = fstElmnt 
         .getElementsByTagName("media:group"); 

       for (int j = 0; j < nodeList1.getLength(); j++) { 
        Node node1 = nodeList1.item(j); 
        mediacontent[j] = new TextView(this); 
        mediathumbnail[j] = new TextView(this); 

        Element secondElmnt = (Element) node1; 

        NodeList mediacontentList = secondElmnt 
          .getElementsByTagName("media:content"); 
        Element mediacontentElement = (Element) mediacontentList 
          .item(0); 
        mediacontent[j].setText("mediacontent url is = " 
          + mediacontentElement.getAttribute("url")); 

        Log.v("TAG","MEDIACONTENT: "+mediacontentElement.getAttribute("url")); 

        NodeList mediathumbnailList = secondElmnt 
          .getElementsByTagName("media:thumbnail"); 
        Element mediathumbnailElement = (Element) mediathumbnailList 
          .item(0); 
        mediathumbnail[j].setText("mediathumbnail url is = " 
          + mediathumbnailElement.getAttribute("url")); 

        Log.v("TAG","MEDIATHUMBNAIL: "+mediathumbnailElement.getAttribute("url")); 

        layout.addView(mediacontent[j]); 
        layout.addView(mediathumbnail[j]); 
       } 

       layout.addView(id[i]); 
       layout.addView(published[i]); 
       layout.addView(content[i]); 
       layout.addView(title[i]); 

      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 

     /** Set the layout view to display */ 

     mScrView1.addView(layout); 
     setContentView(mScrView1); 
    } 
}

不要忘了在一个线程中或做不到这一点，使用这些线的的onCreate（）

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder() 
.permitAll().build(); 
    StrictMode.setThreadPolicy(policy);

来源

2012-08-27 09:14:43 jlopez

后为了能够阅读“这样做媒体：内容“或任何其他”媒体：“元素您需要指定媒体命名空间。

你在代码中设置了错误的名称空间和使用的myString =“http://www.w3.org/2005/Atom”

itemPlace.getChild(myString, "thumbnail").setEndTextElementListener(

将其更改为正确的命名空间将工作像一个魅力：

itemPlace.getChild("http://search.yahoo.com/mrss/", "thumbnail")setElementListener(new ElementListener() { 
     @Override 
     public void end() { 

     } 

     @Override 
     public void start(Attributes attributes) { 
      String urlAttr = attributes.getValue("url"); 
     } 
    });

注意：您不需要指定命名空间前缀，并只使用元素名称（在这种情况下，缩略图）。

来源

2015-07-30 00:52:05 velval

如何使用SAX解析rss-feed，解析其他方法？

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