XML解析

 HttpPost httpRequest=new HttpPost(httpUrl);
          List<NameValuePair> params=new ArrayList<NameValuePair>();
          params.add(new BasicNameValuePair("ID","aa"));
          params.add(new BasicNameValuePair("PWD","aa"));
          try {
     HttpEntity httpentity=new UrlEncodedFormEntity(params,"gb2312");
     httpRequest.setEntity(httpentity);
     HttpClient httpclient=new DefaultHttpClient();
     HttpResponse httpResponse;
     try {
      httpResponse = httpclient.execute(httpRequest);
      HttpEntity entityout = httpResponse.getEntity();
      InputStream is = entityout.getContent();
      is.toString();
      Log.e("ok"+is.toString(), is.toString());
      InputSource source = new InputSource(new InputStreamReader(is,
        HTTP.UTF_8));
      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
      DocumentBuilder db;
      try {
       db = dbf.newDocumentBuilder();
       try {

        Log.e("ok", source.toString());
        Document doc = db.parse(source);
        Log.e("ok1", "ok1");
        NodeList resultValue = doc.getElementsByTagName("user");
        resultValue.getLength();
        Log.e("ok1resultValue.getLength()", resultValue.getLength()+"");
        resultValue.toString();
        Log.e("par"+resultValue.toString(), resultValue.toString());
        Node responseNode = resultValue.item(0);

        Log.e("responseNode",responseNode.toString());
        String serviceResponseID = responseNode.getAttributes()
        
        .getNamedItem("ID").getNodeValue();
                               String serviceResponsePWD = responseNode.getAttributes()
        
        .getNamedItem("PWD").getNodeValue();
        mTextView.setText(serviceResponseID+serviceResponsePWD);
        
       } catch (SAXException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        mTextView.setText("请求错误");
       }
      } catch (ParserConfigurationException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
      }

     } catch (ClientProtocolException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     }
     
    } catch (UnsupportedEncodingException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }