安卓访问项目ip转域名

ping www.example.com
nslookup www.example.com

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        OkHttpClient client = new OkHttpClient.Builder()
                .dns(new Dns() {
                    @Override
                    public List<InetAddress> lookup(String hostname) throws UnknownHostException {
                        return Dns.SYSTEM.lookup(hostname);
                    }
                })
                .build();

        Request request = new Request.Builder()
                .url("https://www.example.com")
                .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (response.isSuccessful()) {
                    final String myResponse = response.body().string();
                    MainActivity.this.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            // Update UI with myResponse
                        }
                    });
                }
            }
        });
    }
}