RedisTemplate注入失败

private static final Logger log = LoggerFactory.getLogger(MybatisRedisCache.class);

// 读写锁
private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock(true);
@Autowired
private StringRedisTemplate redisTemplate;

private String id;

public MybatisRedisCache(final String id) {
    if (id == null) {
        throw new IllegalArgumentException("Cache instances require an ID");
    }
    this.id = id;
}

@Override
public String getId() {
    return this.id;
}

@Override
public void putObject(Object key, Object value) {
    if (value != null) {
        redisTemplate.opsForValue().set(key.toString(), value.toString());
    }
}

@Override
public Object getObject(Object key) {
    try {
        if (key != null) {
            return redisTemplate.opsForValue().get(key.toString());
        }
    } catch (Exception e) {
        log.error("缓存出错 ");
    }
    return null;
}

@Override
public Object removeObject(Object key) {
    if (key != null) {
        redisTemplate.delete(key.toString());
    }
    return null;
}

@Override
public void clear() {
    log.debug("清空缓存");
    Set<String> keys = redisTemplate.keys("*:" + this.id + "*");
    if (!CollectionUtils.isEmpty(keys)) {
        redisTemplate.delete(keys);
    }
}

@Override
public int getSize() {
    Long size = redisTemplate.execute((RedisCallback<Long>) RedisServerCommands::dbSize);
    return size.intValue();
}

@Override
public ReadWriteLock getReadWriteLock() {
    return this.readWriteLock;
}### 问题描述