得到“；org.apache.http.conn.httphostconnectexception连接到http://x

我已经使用xampp设置了一个MySql服务器，我正在创建一个android应用程序来连接到数据库。我可以在场外使用MYSQL工作台和ODBC连接器进行连接，并且能够无错误地推送/提取数据。当连接到模拟电话时，我得到"org.apache.http.conn.httphostconnectexception连接到http://x.x.x.x:88/mobile.php拒绝"。知道为什么会发生这种情况吗？？

允许Internet没有打开…它现在，只是验证，清理和重新启动，现在我得到"ClientProtocolException"。

public void getData() {
    String result = "";
    InputStream isr = null;
    try {
        HttpClient httpclient = new DefaultHttpClient();
        ///external ip address not local host or trying inside a local network
        HttpPost httpost = new HttpPost("http://x.x.x.x:88/mobile.php");
        HttpResponse response = httpclient.execute(httpost);
        HttpEntity entity = response.getEntity();
        isr = entity.getContent();
    } catch (Exception e) {
        Log.e("log.tag", "Error in http connection  " + e.toString());
        resultView.setText("Could not connect to Database");
    }
    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                isr, "iso=8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "'n");
        }
        isr.close();
        result = sb.toString();
    } catch (Exception e) {
        Log.e("log.tag", "Error converting result  " + e.toString());
    }
    try {
        String s = "";
        JSONArray jArray = new JSONArray(result);
        for (int i = 0; i < jArray.length(); i++) {
            JSONObject json = jArray.getJSONObject(i);
            s = s + "User :" + json.getString("UserName");
        }
        resultView.setText(s);
    } catch (Exception e) {
        Log.e("log.tag", "Error Parsing Data " + e.toString());
    }
}