Java中redisTemplate注入失败NullPointerException异常问题解决

@Resource
private RedisTemplate redisTemplate;

    @Resource
    private RedisTemplate<String, T> redisTemplate;
    public static RedisTemplate redis;
    @PostConstruct
    public void getRedisTemplate() {
        redis = this.redisTemplate;
    }

public class RedisUtil<T> {
    @Resource
    private RedisTemplate<String, T> redisTemplate;
    public static RedisTemplate redis;
    @PostConstruct
    public void getRedisTemplate() {
        redis = this.redisTemplate;
    }
    /**
     * 将对象的列表数据存入redis中的双向列表中
     */
    public void savaDataListToRedisList(String key, List<T> list) {
        // 设置Key的String序列化
        redis.setKeySerializer(RedisSerializer.string());
        redis.opsForList().leftPushAll(key, list);
    }
    /**
     * 将对象的列表数据从redis中的双向列表中获取出来，通过分页进行获取
     */
    public List<T> getDataListFromRedisList(String key, Class<T> clazz) {
        // 设置Key的String序列化
        redis.setKeySerializer(RedisSerializer.string());
        return redis.opsForList().range(key, 0, -1);
    }
}