• 开通短信服务（可参考博主的“手机短信验证码”）
• 如果开通不成功，就只能借下别人已经开通好的短信，如果不想重复，可在其下创建一个新的模板管理
• 这里只是介绍如何使用

<!--aliyun-->
<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>aliyun-java-sdk-core</artifactId>
    <version>4.5.1</version>  
</dependency>
<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>aliyun-java-sdk-dysmsapi</artifactId>
    <version>1.1.0</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.62</version> 
</dependency>

package com.xsha.msmservice.utils;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Random;

public class RandomUtil {

	private static final Random random = new Random();

	private static final DecimalFormat fourdf = new DecimalFormat("0000");

	private static final DecimalFormat sixdf = new DecimalFormat("000000");

	public static String getFourBitRandom() {
		return fourdf.format(random.nextInt(10000));
	}

	public static String getSixBitRandom() {
		return sixdf.format(random.nextInt(1000000));
	}

	/**
	 * 给定数组，抽取n个数据
	 * @param list
	 * @param n
	 * @return
	 */
	public static ArrayList getRandom(List list, int n) {

		Random random = new Random();

		HashMap<Object, Object> hashMap = new HashMap<Object, Object>();

		// 生成随机数字并存入HashMap
		for (int i = 0; i < list.size(); i++) {

			int number = random.nextInt(100) + 1;

			hashMap.put(number, i);
		}

		// 从HashMap导入数组
		Object[] robjs = hashMap.values().toArray();

		ArrayList r = new ArrayList();

		// 遍历数组并打印数据
		for (int i = 0; i < n; i++) {
			r.add(list.get((int) robjs[i]));
			System.out.print(list.get((int) robjs[i]) + "\t");
		}
		System.out.print("\n");
		return r;
	}
}

• 这里可以创建常量类读取配置文件的阿里云密钥等信息（可参考博主的“对象存储”）

  package com.xsha.msmservice.service.impl;
  
  import com.alibaba.fastjson.JSONObject;
  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.exceptions.ServerException;
  import com.aliyuncs.profile.DefaultProfile;
  import com.baomidou.mybatisplus.core.toolkit.StringUtils;
  import com.xsha.msmservice.service.MsmService;
  import com.xsha.msmservice.utils.RandomUtil;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.data.redis.core.RedisTemplate;
  import org.springframework.stereotype.Service;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.TimeUnit;
  
  @Service
  public class MsmServiceImpl implements MsmService {
  
      // 注入redis缓存对象
      @Autowired
      private RedisTemplate<String, String> redisTemplate;
  
      @Override
      public boolean sendMessage(String phone) {
          if(StringUtils.isEmpty(phone)) return false;
          // 先获取手机号对应的验证码（该验证码没过期）
          String code = redisTemplate.opsForValue().get(phone);
          if(!StringUtils.isEmpty(code)) {
              return true;
          }
          // 过期则生成随机验证码，并在发送之后向redis中存入手机号对应的验证码
          code = RandomUtil.getFourBitRandom();
          Map<String, Object> map = new HashMap<>();
          map.put("code", code);
  
          // 设置短信配置
          DefaultProfile profile = DefaultProfile.getProfile("your region", "your accessId", "your accessSecret");
  
          IAcsClient client = new DefaultAcsClient(profile);
  
          SendSmsRequest request = new SendSmsRequest();
          request.setPhoneNumbers(phone);//接收短信的手机号码
          request.setSignName("your signature name");//短信签名名称
          request.setTemplateCode("your template");//短信模板CODE
          request.setTemplateParam(JSONObject.toJSONString(map));//短信模板变量对应的实际值
  
          try {
              SendSmsResponse response = client.getAcsResponse(request);
              // 发送短信，尽量打印出来是否发送成功
              new Gson().toJson(response);
              // 将验证码放置在redis缓存中，并设置5分钟有效时间，最后一个参数是单位
              redisTemplate.opsForValue().set(phone, code, 5, TimeUnit.MINUTES);
          } catch (ServerException e) {
              e.printStackTrace();
              return false;
          } catch (ClientException e) {
              e.printStackTrace();
              return false;
          }
          return true;
      }
  }