pom.xml:

    
    
        org.springframework.boot
        spring-boot-starter-redis
    
    
        redis.clients
        jedis
        2.6.2
    
    
        org.springframework.data
        spring-data-redis
        1.5.0.RELEASE
    

RedisCacheConfig.java:

   
   @Bean(name="jedisConnectionFactory")
    JedisConnectionFactory jedisConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        return factory;
    }

    @Bean
    RedisTemplate redisTemplate() {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(jedisConnectionFactory());
        return redisTemplate;
    }

工具类：

@SuppressWarnings("unchecked")
@Component
public class RedisUtil {
    @SuppressWarnings("rawtypes")
    
    @Autowired
    private RedisTemplate redisTemplate;
    
    public void test() {
         redisTemplate.opsForValue().set("q", 123);//这里的redisTemplate=null 不知为何？                          
    }
}

调用test()方法  报java.lang.NullPointerException  求指点明灯