阿里云短信服务发送短信验证码（JAVA开发此功能）

package com.st;

import java.util.Random;

import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.dysmsapi.model.v20170525.SendSmsRequest;
import com.aliyuncs.dysmsapi.model.v20170525.SendSmsResponse;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;

public class SendSmsCode {

    //产品名称:云通信短信API产品,开发者无需替换
    static final String product = "Dysmsapi";
    //产品域名,开发者无需替换
    static final String domain = "dysmsapi.aliyuncs.com";

    // TODO 此处需要替换成开发者自己的AK(在阿里云访问控制台寻找)
    static final String accessKeyId = "yourAccessKeyId";
    static final String accessKeySecret = "yourAccessKeySecret";

    public static SendSmsResponse sendSms(String phone, String code) throws ClientException {

        //可自助调整超时时间
        System.setProperty("sun.net.client.defaultConnectTimeout", "10000");
        System.setProperty("sun.net.client.defaultReadTimeout", "10000");

        //初始化acsClient,暂不支持region化
        IClientProfile profile = DefaultProfile.getProfile("cn-hangzhou", accessKeyId, accessKeySecret);
        DefaultProfile.addEndpoint("cn-hangzhou", "cn-hangzhou", product, domain);
        IAcsClient acsClient = new DefaultAcsClient(profile);

        //组装请求对象-具体描述见控制台-文档部分内容
        SendSmsRequest request = new SendSmsRequest();
        //必填:待发送手机号
        request.setPhoneNumbers(phone);
        //必填:短信签名-可在短信控制台中找到
        request.setSignName("自定义短信签名");
        //必填:短信模板-可在短信控制台中找到
        request.setTemplateCode("SMS_100000000");
        //可选:模板中的变量替换JSON串,如模板内容为"您的验证码为${code}"...时,此处的值为
        request.setTemplateParam("{\"code\":\""+code+"\"}");

        //选填-上行短信扩展码(无特殊需求用户请忽略此字段)
        //request.setSmsUpExtendCode("90997");

        //可选:outId为提供给业务方扩展字段,最终在短信回执消息中将此值带回给调用者
        request.setOutId("yourOutId");

        //hint 此处可能会抛出异常，注意catch
        SendSmsResponse sendSmsResponse = acsClient.getAcsResponse(request);

        return sendSmsResponse;
    }
    
    public static synchronized String genUniqueKey(){
        Random random = new Random();
        Integer number = random.nextInt(9000) + 1000;
        return String.valueOf(number);
    }
    
    public static void main(String[] args) {
        try {
            String code = KeyUtil.genUniqueKey();
            SendSmsCode.sendSms("待发送短信的手机号", code);
            System.out.println("发送短信验证码成功："+code);
        } catch (ClientException e) {
            e.printStackTrace();
        }
    }
    
    
}