android 使用现成做get请求

       //接受子线程发来的消息       Handler    hanler = new Handler() {            @Override            public void handleMessage(Message msg) {                // //执行接收到的通知，更新UI 此时执行的顺序是按照队列进行，即先进先出                super.handleMessage(msg);                Bundle B=msg.getData();            }

//创建一个子线程
Thread thread = new Thread(new Runnable() {            @Override            public void run() {                // TODO Auto-generated method stub                String str = "1";                HttpGet get = new HttpGet(                        "http://api.map.baidu.com/geoconv/v1/?coords=114.21892734521,29.575429778924;114.21892734521,29.575429778924&ak=E4805d16520de693a3fe707cdc962045&output=json");                try {                    DefaultHttpClient client = new DefaultHttpClient();                    HttpResponse respon = client.execute(get);                    if (respon.getStatusLine().getStatusCode() == 200) {                        str = EntityUtils.toString(respon.getEntity());                    }                } catch (ClientProtocolException e) {                    Toast.makeText(getApplicationContext(), "错误1",                            Toast.LENGTH_SHORT).show();                } catch (IOException e) {                    Toast.makeText(getApplicationContext(), "错误2",                            Toast.LENGTH_SHORT).show();                }                Message message = new Message();                message.what = 1;                Bundle b = new Bundle();                b.putString("h", str);                message.setData(b);　　　　　　　　　//通知 Hanler                hanler.sendMessage(message);            }        });        thread.start();

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