HttpEntity转换Inputstream（红色）加XmlPull解析

package com.bawei.xml;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import com.bawei.vo.Good;

import android.os.Bundle;
import android.app.Activity;
import android.util.Xml;
import android.view.Menu;

public class MainActivity extends Activity {
    private String URL = "http://www.sciencenet.cn/xml/iphoneInterface.aspx?type=news&nums=20&pass=";
    private InputStream st;
    private List<Good> list;
    

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        new Thread() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                HttpGet get = new HttpGet(URL);
                HttpParams params = new BasicHttpParams();
                HttpConnectionParams.setConnectionTimeout(params, 5 * 1000);
                HttpConnectionParams.setSoTimeout(params, 5 * 1100);
                HttpClient client = new DefaultHttpClient(params);
                try {
                    HttpResponse res = client.execute(get);
                    if (res.getStatusLine().getStatusCode() == 200) {
                        HttpEntity entity = res.getEntity();
                        st = entity.getContent();
                        System.out.println(st);
                        


                        list = new ArrayList<Good>();
                        XmlPullParser parser = Xml.newPullParser();
                        try {
                            try {
                                parser.setInput(st, "utf-8");
                            } catch (Exception e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                        
                            int eventType = parser.getEventType();
                            String tagName = "";
                            Good good =null;
                            while (eventType != XmlPullParser.END_DOCUMENT) {

                                switch (eventType) {
                                case XmlPullParser.START_DOCUMENT:
                                   break;

                                case XmlPullParser.START_TAG:
                                 tagName = parser.getName();
                                if("item".equals(tagName)){
                                     good = new Good();
                                    
                                 }
                                    break;
                                case XmlPullParser.TEXT:
                                   String text = parser.getText();
                                   if("title".equals(tagName)){
                                     good.setTitle(text);
                                     
                                   }else  if("link".equals(tagName)){
                                     good.setLink(text);
                                     
                                   }else  if("imgs".equals(tagName)){
                                     good.setImgs(text);
                                     
                                   }else  if("description".equals(tagName)){
                                     good.setDescription(text);
                                     
                                   }else  if("copyright".equals(tagName)){
                                     good.setCopyright(text);
                                     
                                   }else  if("pubDate".equals(tagName)){
                                     good.setPubDate(text);
                                     
                                   }else  if("comments".equals(tagName)){
                                     good.setComments(text);
                                     
                                   }else 
                                       
                                    break;
                                case XmlPullParser.END_TAG:
                             tagName=    parser.getName();
                            if("item".equals(tagName)){
                                list.add(good);
                                System.out.println(list.toString());
                                good=null;
                            }    
                            tagName="";
                             break;

                                }
                              //继续
                                eventType=parser.next();
                            }
                        } catch (XmlPullParserException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        } catch (IOException 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();
                }
            }
        }.start();


        

    }

}