//连接
                HttpGet request =  new HttpGet(url);
                HttpClient client = new DefaultHttpClient();
                HttpResponse response = null;
                try {
                        response = client.execute(request);                        //4.0 SDK机子运行时会报错,android.os.NetworkOnMainThreadException
                        //访问成功
                        if(response.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
                                //获取返回值
                                result = EntityUtils.toString(response.getEntity()).trim();