java.net.UnknownHostException：无法解析主机“svt-srv-41”：没有与主机名关联的地址

Question

我收到了未知主机异常的错误。

我的api代码是：

public String makeServiceCall(String url, int method,
            List<NameValuePair> params) {
        try {
            // http client
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpEntity httpEntity = null;
            HttpResponse httpResponse = null;

            // Checking http request method type
            if (method == POST) {
                HttpPost httpPost = new HttpPost(url);
                // adding post params
                if (params != null) {
                    httpPost.setEntity(new UrlEncodedFormEntity(params));
                }

                httpResponse = httpClient.execute(httpPost);

            } else if (method == GET) {
                // appending params to url
                if (params != null) {
                    String paramString = URLEncodedUtils
                            .format(params, "utf-8");
                    url += "?" + paramString;
                }
                HttpGet httpGet = new HttpGet(url);

                //httpGet.addHeader(BasicScheme.authenticate(new UsernamePasswordCredentials("test-user@example.com", "Password!"), "UTF-8", false));

                httpResponse = httpClient.execute(httpGet);

            }
            httpEntity = httpResponse.getEntity();
            response = EntityUtils.toString(httpEntity);

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return response;

    }

我还在Manisest文件中提供了互联网权限，

网络服务呼叫的逻辑是否存在任何问题，或者网站方面存在任何问题，我不知道我在做什么，请帮助我。

请帮我解决这个问题。提前谢谢。