/**
 * 发送短信验证码
 *
 * @param mobile
 * @return
 */
public String sendSms(String mobile) {
    //连接阿里云
    DefaultProfile profile = DefaultProfile.getProfile(this.aliyunSMSConfig.getRegionId(),
            this.aliyunSMSConfig.getAccessKeyId(), this.aliyunSMSConfig.getAccessKeySecret());
    IAcsClient client = new DefaultAcsClient(profile);

    String code = RandomUtils.nextInt(100000, 999999) + "";
    //当要调用的某个产品的API没有提供SDK时，可以采用泛用型的API调用方式（CommonRequest）。使用CommonRequest调用方式可实现任意Open API接口的调用。
    //构建请求
    CommonRequest request = new CommonRequest();
    request.setSysMethod(MethodType.POST);
    request.setSysDomain(this.aliyunSMSConfig.getDomain());
    request.setSysVersion("2017-05-25");
    request.setSysAction("SendSms");
    //自定义参数
    request.putQueryParameter("RegionId", this.aliyunSMSConfig.getRegionId());
    request.putQueryParameter("PhoneNumbers", mobile); //目标手机号
    request.putQueryParameter("SignName", this.aliyunSMSConfig.getSignName()); //签名名称
    request.putQueryParameter("TemplateCode", this.aliyunSMSConfig.getTemplateCode()); //短信模板code
    request.putQueryParameter("TemplateParam", "{\"code\":\"" + code + "\"}");//模板中变量替换
    try {
        //CommonResponse类定义了通用请求响应。
        CommonResponse response = client.getCommonResponse(request);
        String data = response.getData();
        if (StringUtils.contains(data, "\"Message\":\"OK\"")) {
            return code;
        }
        log.info("发送短信验证码失败~ data = " + data);
    } catch (Exception e) {
        log.error("发送短信验证码失败~ mobile = " + mobile, e);
    }
    return null;
}