如何使用Blackberry模拟器从localhost服务器获取数据

我想使用Blackberry模拟器从服务器localhost获取数据。我的服务器将数据提供给JSON文件。如何在Blackberry模拟器中显示数据，以及如何将JSON解析为String。我希望有人能帮我。

这是我的服务器源代码。

<?php
    require('db.php');
    $query="select*from penarikan";
    $hasil=mysql_query($query);
    if(mysql_num_rows($hasil)>0)
    {
        while($data=mysql_fetch_array($hasil))
        {
            $x[]=$data;
        }
    }
    echo(json_encode($x));
?>

这是我的黑莓源代码

package com.irwan.bb.pa;
import java.io.InputStream;
import java.io.InputStreamReader;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;
import org.json.me.JSONObject;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;
public class ScreenViewPenarikan extends MainScreen {
    HttpConnection httpconnection;
    InputStream inputStream;

    public ScreenViewPenarikan() {
        super(MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR);
        runJson();
    }
    public void runJson()
    {
        try {
            String url="http://127.0.0.1:80/proyek_akhir/view_penarikan.php;deviceside=true";
            System.out.println(url);
            //connect to server
            httpconnection=(HttpConnection)Connector.open(url);
            inputStream=httpconnection.openDataInputStream();
            if(httpconnection.getResponseCode()==HttpConnection.HTTP_OK)
            {
                //add(new LabelField("Ada konesksi"));
                InputStreamReader reader= new InputStreamReader(inputStream,"UTF-8");
                int readCharacter;
                StringBuffer responseBuffer = new StringBuffer();
                while ((readCharacter = reader.read()) != -1) {
                    responseBuffer.append((char) readCharacter);
                    httpconnection.close();
                    inputStream.close();
                    reader.close();
                    String responseMessage = new String(responseBuffer);
                    JSONObject object = new JSONObject(responseMessage);
                    add(new LabelField(object));

                }
            }
            else{
                //add(new LabelField("Koneksi tidak ada"));
            }
        } catch (Exception e) {
            // TODO: handle exception
        }
    }
}