一、pom.xml引入依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
</dependency>

二、application.yml配置连接redis-sentinel集群：

spring:
  redis:
    lettuce:
      pool:
        max-active: 8
        max-idle: 8
        max-wait: -1ms
        min-idle: 0
    sentinel:
      master: mymaster
      nodes: 192.168.64.132:26379,192.168.64.132:26380,192.168.64.132:26381

三、java类如下：

package com.example.redisdemo;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;
import java.util.concurrent.TimeUnit;

@Repository
public class RedisDao {

    @Resource
    private RedisTemplate<String, Object> redisTemplate;

    /**
     * 往Redis存数据
     * @param key 主键
     * @param value 值
     * @param seconds 过期时间为秒
     */
    public void put(String key, Object value, long seconds){
        redisTemplate.opsForValue().set(key, value, seconds, TimeUnit.SECONDS);
    }

    /**
     * 获取Redis内存中的数据
     * @param key 主键
     * @return
     */
    public Object get(String key){
        return redisTemplate.opsForValue().get(key);
    }
}