Android http和xml解析

于 2014-07-09 20:51:38 发布
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转自 http://www.cnblogs.com/lm3515/archive/2011/03/30/2000335.html

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package  Http.View;
 
import  java.io.IOException;
import  java.io.StringReader;
import  java.util.ArrayList;
import  java.util.Iterator;
import  java.util.List;
 
import  javax.xml.parsers.SAXParserFactory;
 
import  mars.modle.Mp3Info;
 
import  org.apache.http.HttpEntity;
import  org.apache.http.HttpResponse;
import  org.apache.http.HttpStatus;
import  org.apache.http.NameValuePair;
import  org.apache.http.client.ClientProtocolException;
import  org.apache.http.client.HttpClient;
import  org.apache.http.client.entity.UrlEncodedFormEntity;
import  org.apache.http.client.methods.HttpPost;
import  org.apache.http.impl.client.DefaultHttpClient;
import  org.apache.http.message.BasicNameValuePair;
import  org.apache.http.util.EntityUtils;
import  org.xml.sax.InputSource;
import  org.xml.sax.XMLReader;
 
import  android.app.Activity;
import  android.content.Intent;
import  android.os.Bundle;
import  android.view.View;
import  android.widget.Button;
import  android.widget.TextView;
 
public  class  Post extends  Activity {
  TextView mTextView = null ;
  @Override
  protected  void  onCreate(Bundle savedInstanceState)
  {
   // TODO Auto-generated method stub
   super .onCreate(savedInstanceState);
   setContentView(R.layout.post);
      mTextView = (TextView) this .findViewById(R.id.my);
         //http地址
         String httpUrl = "http://wap.51tes.com/i.asmx/c" ;
         //获得的数据
         HttpPost httpRequest = new  HttpPost(httpUrl);
         //使用NameValuePair来保存要传递的Post数据
         List<NameValuePair> params = new  ArrayList<NameValuePair>();
         //添加需要的参数
         params.add( new  BasicNameValuePair( "c1" , "wm" ));
         params.add( new  BasicNameValuePair( "c2" , "240*320" ));
         params.add( new  BasicNameValuePair( "c3" , "1.0" ));
         params.add( new  BasicNameValuePair( "c4" , "6365T" ));
         try
         {
          //设置字符集
          HttpEntity httpentity = new  UrlEncodedFormEntity(params, "utf8" );
          //请求HttpRequest
          httpRequest.setEntity(httpentity);
          //取得默认的HttpClient
          HttpClient httpclient = new  DefaultHttpClient();
          //取得HttpResponse
          HttpResponse httpResponse = httpclient.execute(httpRequest);
          //请求成功
          if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
          {
           //取得返回的字符串
           String strResult = EntityUtils.toString(httpResponse.getEntity());
           mTextView.setText(strResult);
           parse(strResult);
          }
          else
          {
           mTextView.setText( "请求错误" );
          }
         }
         catch (ClientProtocolException e)
         {
          mTextView.setText(e.getMessage().toString());
         }
      catch (IOException e)
      {
       mTextView.setText(e.getMessage().toString());
      }
      catch (Exception e)
      {
       mTextView.setText(e.getMessage().toString());
      }
   //设置按键事件监听
         Button button_Back = (Button)findViewById(R.id.Button_Back_POST);
         /*监听Button的时间信息*/
         button_Back.setOnClickListener( new  Button.OnClickListener()
         {
          public  void  onClick(View v)
          {
           /*新建一个Intent对象*/
           Intent intent = new  Intent();
           /*指定intent要启动的类*/
           intent.setClass(Post. this , Http. class );
           /*启动一个新的Activity*/
           startActivity(intent);
           /*关闭当前的Activity*/
           Post. this .finish();
          }
         });
  }
   private  List<Mp3Info> parse(String xmlStr)
   {
       SAXParserFactory  saxParserFactory = SAXParserFactory.newInstance();
       List<Mp3Info> infos = new  ArrayList<Mp3Info>();
       try
       {
    XMLReader xmlReader = saxParserFactory.newSAXParser().getXMLReader();
    MyContentHandler mp3ListContentHandler = new  MyContentHandler(infos);
    xmlReader.setContentHandler(mp3ListContentHandler);
    xmlReader.parse( new  InputSource( new  StringReader(xmlStr)));
    for (Iterator<Mp3Info> iterator = infos.iterator();iterator.hasNext();)
    {
     Mp3Info mp3Info = iterator.next();
     System.out.println(mp3Info);
    }
       }
       catch (Exception e)
   {
    e.printStackTrace();
   }
   return  infos;
   }
}

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package  Http.View;
 
import  java.util.List;
 
import  mars.modle.Mp3Info;
 
import  org.xml.sax.Attributes;
import  org.xml.sax.SAXException;
import  org.xml.sax.helpers.DefaultHandler;
 
public  class  MyContentHandler extends  DefaultHandler
{
  private  List<Mp3Info> infos = null ;
  public  MyContentHandler(List<Mp3Info> infos)
  {
   super ();
   this .infos = infos;
  }
  public  List<Mp3Info> getInfos()
  {
   return  infos;
  }
  public  void  setInfos(List<Mp3Info> infos)
  {
   this .infos = infos;
  }
  private  Mp3Info mp3Info = null ;
  private  String tagName;
     public  void  startDocument() throws  SAXException
     {
      
     }
     public  void  endDocument() throws  SAXException
     {
      
     }
     public  void  startElement(String nameSpaceURI,String localName, String qName, Attributes attr) throws  SAXException
     {
      this .tagName = localName;
   if (localName.equals( "E" ))
   {
    mp3Info = new  Mp3Info();
   }
     }
     public  void  endElement(String nameSpaceURI,String localName, String qName, Attributes attr) throws  SAXException
     {
   if (qName.equals( "E" ))
   {
    infos.add(mp3Info);
   }
      tagName = null ;
     }
     public  void  characters ( char [] ch, int  start, int  length) throws  SAXException
     {
      String temp = new  String (ch, start, length);
      if (tagName.equals( "E1" ))
      {
       mp3Info.setE1(temp);
      }
      else  if (tagName.equals( "E2" ))
      {
       mp3Info.setE2(temp);
      }
      else  if (tagName.equals( "E3" ))
      {
       mp3Info.setE3(temp);
      }
      else  if (tagName.equals( "E4" ))
      {
       mp3Info.setE4(temp);
      }
      else  if (tagName.equals( "E5" ))
      {
       mp3Info.setE5(temp);
      }
     }
}
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