httpclient域名验证码

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class HttpClientExample {
    public static void main(String[] args) {
        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
            HttpGet request = new HttpGet("http://yourdomain.com/.well-known/pki-validation/file.txt");
            HttpResponse response = httpClient.execute(request);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                String result = EntityUtils.toString(entity);
                System.out.println("Response: " + result);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}