国内短信服务

import org.json.JSONObject;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.URI;

public class Sms {
  /**
   * 发送文本短信
   * @param account API账号，登录控制台获取
   * @param password API密码，登录控制台获取
   * @param phone 接收的手机号；多个手机号使用英文逗号间隔，一次不要超过1000个
   * @param msg 短信内容
   */
  public static void sendSMS(String account, String password, String phone, String msg) {
      try {
          JSONObject params = new JSONObject();
          params.put("account", account);
          params.put("password", password);
          params.put("phone", phone);
          params.put("msg", msg);

          HttpClient client = HttpClient.newHttpClient();
          HttpRequest request = HttpRequest.newBuilder()
              .uri(URI.create("https://smssh1.253.com/msg/v1/send/json"))
              .header("Content-Type", "application/json")
              .POST(HttpRequest.BodyPublishers.ofString(params.toString()))
              .build();

          HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
          System.out.println("返回结果: " + response.body());
      } catch (Exception e) {
          e.printStackTrace();
      }
  }
}