帮我写一个用阿里云定时发送短信的java代码

这里是一个用阿里云定时发送短信的Java代码示例：

import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.exceptions.ServerException;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;
import com.aliyuncs.sms.model.v20160927.SendSmsRequest;
import com.aliyuncs.sms.model.v20160927.SendSmsResponse;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

public class SendSmsDemo {

    public static void main(String[] args) {
        // 设置好账号的AccessKeyId和AccessKeySecret
        final String accessKeyId = "yourAccessKeyId";
        final String accessKeySecret = "yourAccessKeySecret";

        // 初始化IAcsClient
        IClientProfile profile = DefaultProfile.getProfile("cn-hangzhou", accessKeyId, accessKeySecret);
        DefaultProfile.addEndpoint("cn-hangzhou", "cn-hangzhou", "Sms", "sms.aliyuncs.com");
        IAcsClient acsClient = new DefaultAcsClient(profile);

        // 构造请求对象
        SendSmsRequest request = new SendSmsRequest();
        // 设置短信接收号码，多个号码以逗号分隔
        request.setPhoneNumbers("yourPhoneNumbers");
        // 设置短信签名
        request.setSignName("yourSignName");
        // 设置短信模板ID
        request.setTemplateCode("yourTemplateCode");
        // 设置短信发送时间，格式为yyyyMMddHHmmss，例如"20220614123800"
        SimpleDateFormat dateFormatGmt = new SimpleDateFormat("yyyyMMddHHmmss");
        dateFormatGmt.setTimeZone(TimeZone.getTimeZone("GMT"));
        request.setScheduleSendTime(dateFormatGmt.format(new Date()));

        try {
            // 发送请求并获取响应
            SendSmsResponse response = acsClient.getAcsResponse(request);
            System.out.println("RequestId：" + response.getRequestId());
            System.out.println("Code：" + response.getCode());
            System.out.println("Message：" + response.getMessage());
            System.out.println("BizId：" + response.getBizId());
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            e.printStackTrace();
        }
    }
}

需要注意的是，需要将 `yourAccessKeyId`、`yourAccessKeySecret`、`yourPhoneNumbers`、`yourSignName`、`yourTemplateCode` 替换为你自己的相关信息。另外，要在阿里云短信服务中设置好签名和模板。