在Android中使用简单的Xml解析器解析

Question

我在使用Web服务时遇到了麻烦。我想用simple xml parser解析数据。如果有人使用这个简单的XML解析器，那么请帮忙。 在此先感谢... :)

Answer 1

创建解析器并从主活动发送您的URL。

public class GoogleXmlParser { 
    private static final String ns=null; 

    public List<Entry>parse(InputStream in) throws XmlPullParserException,IOException 
    { 
     try { 
      XmlPullParser parser=Xml.newPullParser(); 
      parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false); 
      parser.setInput(in,null); 
      parser.nextTag(); 
      return reedFeed(parser); 
     }finally{ 
      in.close(); 
     } 
    } 

    private List<Entry>reedFeed(XmlPullParser parser) throws XmlPullParserException,IOException 
    { 
     List<Entry> entries = new ArrayList<Entry>(); 
     parser.require(XmlPullParser.START_TAG, ns, "rss"); 
     //String name1=parser.getName(); 
     System.out.println(parser.getName()); 
     //String tag=; 
     while (parser.nextTag()!=XmlPullParser.END_TAG) { 

      if(parser.getEventType()!=XmlPullParser.START_TAG){ 
       continue; 
      } 
      String name=parser.getName(); 

      if(name.equals("channel")){ 
       String tag=parser.getName(); 
       System.out.println("tag"+tag); 
      } 
      else if(name.equals("item")){ 
       System.out.println("tag"+parser.getName()); 
       entries.add(readEntry(parser)); 
      }else{ 
       skip(parser); 
      } 
     } 
     return entries; 
    } 

    public static class Entry 
    { 
     public String title=null; 
     public String link=null; 
     public String description=null; 
     private Entry(String title, String description, String link) { 
      this.title = title; 
      this.description = description; 
      this.link = link; 
     } 
    } 
    private Entry readEntry(XmlPullParser parser) throws XmlPullParserException,IOException 
    { 
     parser.require(XmlPullParser.START_TAG, ns, "item"); 
     System.out.println(parser.getDepth()); 
     String title = null; 
     String description = null; 
     String link = null; 
     while (parser.next()!=XmlPullParser.END_TAG) { 
      if(parser.getEventType()!=XmlPullParser.START_TAG){ 
       continue; 
      } 
      String name=parser.getName(); 
      if(name.equals("title")){ 
       title = readTitle(parser); 
      }else if (name.equals("link")) { 
       link = readLink(parser); 
      }else if(name.equals("description")){ 
       description = readSummary(parser); 
      }else{ 
       skip(parser); 
      } 
     } 
     return new Entry(title, description, link); 
    } 
    private String readTitle(XmlPullParser parser)throws IOException,XmlPullParserException 
    { 
     //parser.require(XmlPullParser.START_TAG, ns, "item"); 
     //parser.next(); 
     parser.require(XmlPullParser.START_TAG, ns, "title"); 
     String title = readText(parser); 
     parser.require(XmlPullParser.END_TAG, ns, "title"); 
     return title; 
    } 
    private String readLink(XmlPullParser parser)throws IOException,XmlPullParserException 
    { 
     String link=""; 
     parser.require(XmlPullParser.START_TAG, ns, "link"); 
     link=parser.nextText(); 
     parser.require(XmlPullParser.END_TAG, ns, "link"); 
     return link; 

    } 
    private String readText(XmlPullParser parser) throws IOException, XmlPullParserException { 
     String result = ""; 
     if (parser.next() == XmlPullParser.TEXT) { 
      result = parser.getText(); 
      parser.nextTag(); 
     } 
     return result; 
    } 
    private String readSummary(XmlPullParser parser) throws IOException, XmlPullParserException { 
     parser.require(XmlPullParser.START_TAG, ns, "description"); 
     String summary = readText(parser); 
     //System.out.println(summary); 
     parser.require(XmlPullParser.END_TAG, ns, "description"); 
     return summary; 
    } 
    private void skip(XmlPullParser parser) throws XmlPullParserException, IOException { 
     if (parser.getEventType() != XmlPullParser.START_TAG) { 
      throw new IllegalStateException(); 
     } 
     int depth = 1; 
     while (depth != 0) { 
      switch (parser.next()) { 
      case XmlPullParser.END_TAG: 
        depth--; 
        break; 
      case XmlPullParser.START_TAG: 
        depth++; 
        break; 
      } 
     } 
    } 
}