依赖：

             
                 
      
       com.github.qcloudsms
                  
      
       qcloudsms
                  
      
       1.0.6
              
     

代码：

public class SMSUtil {    private static final int appid =xxxxx;    private static final String appkey = "xxxxxx";    public static String send(String phoneNumbers) {        int yzm = random();        String num = Integer.toString(yzm);        SmsSingleSenderResult result = null;        try {            String smsSign = "" + yzm + "为您的登录验证码，请于2分钟内填写。如非本人操作，请忽略本短信。"; // NOTE: 这里的签名"腾讯云"只是一个示例，真实的签名需要在短信控制台中申请，另外签名参数使用的是`签名内容`，而不是`签名ID            SmsSingleSender ssender = new SmsSingleSender(appid, appkey);            result = ssender.send(0, "86", phoneNumbers, smsSign, "", "");            if (result.result == 0) {                //发送成功返回验证码                return num;            }        } catch (HTTPException e) {            //System.out.println("HTTP响应码错误");            return result.toString();        } catch (JSONException e) {            //System.out.println("json解析错误");            return result.toString();        } catch (IOException e) {            //System.out.println(" 网络IO错误");            return result.toString();        } catch (com.github.qcloudsms.httpclient.HTTPException e) {            e.printStackTrace();        }        return result.toString();    }    /*        生成6位验证码     */    private static int random() {        Random r = new Random();        StringBuffer sb = new StringBuffer();        int[] c = new int[6];        for (int i = 0; i < 6; i++) {            c[i] = r.nextInt(9) + 1;            sb.append(c[i]);        }        return Integer.parseInt(sb.toString());    }    public static void main(String[] args) {        String send = SMSUtil.send("这里给手机号码");        System.out.println(send);    }}