问Android HTTP post问题

EN

public class SignIn extends Activity {

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        try {
            HttpClient client = new DefaultHttpClient();  
            String postURL = "http://test2.icerge.com/testpoint/user";
            HttpPost post = new HttpPost(postURL);
                List<NameValuePair> params = new ArrayList<NameValuePair>();
                params.add(new BasicNameValuePair("account[name]", "Bob Kelso"));
                params.add(new BasicNameValuePair("account[pass]", "awefulawefulman"));
                params.add(new BasicNameValuePair("account[mail]", "bobkelso@sacredheart.org"));
                UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
                post.setEntity(ent);
                HttpResponse responsePOST = client.execute(post);  
                HttpEntity resEntity = responsePOST.getEntity();  
                if (resEntity != null) {    
                    Log.i("RESPONSE",EntityUtils.toString(resEntity));
                }
        } catch (Exception e) {
            e.printStackTrace();
            Log.i("ERROR",e.toString());
        }
    }
}