springboot Unboxing of redisTemplate. may produce NullPointerException

I use springboot(2.3.1) and Lettuce in project

Filter

@Slf4j
@WebFilter(filterName = "requestWrapperFilter", urlPatterns = {"/*"})
public class RequestWrapperFilter implements Filter {
	@Resource
	private RedisTemplate redisTemplate;
	
	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
	...
				if (redisTemplate.hasKey(COMMON_HEAD_TOKEN_NAME + token)) {
					redisTemplate.delete(COMMON_HEAD_TOKEN_NAME + token);
				}
	}
	...
}

the RedisConfig configration like this:

@Configuration
@Component
public class RedisConfig {
	@Bean
	public RedisTemplate<String, Serializable> redisTemplate(LettuceConnectionFactory connectionFactory) {
		RedisTemplate<String, Serializable> redisTemplate = new RedisTemplate<>();
		redisTemplate.setKeySerializer(new StringRedisSerializer());
		redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer(Object.class));
		redisTemplate.setConnectionFactory(connectionFactory);
		return redisTemplate;
	}
}

but when I calling interface , the application shows the following error:

there is WARNING:

Unboxing of 'redisTemplate.hasKey(COMMON_HEAD_TOKEN_NAME + token)' may produce 'NullPointerException' 
Unchecked call to 'hasKey(K)' as a member of raw type 'org.springframework.data.redis.core.RedisTemplate' 

can I ignore ?

The first warning means that the hasKey method returns an object wrapper, but using it inside an if condition implicitly unboxes it (i.e. converts the result of the call to a primitive value). If for some reason the hasKey method returns null, you'll get an error. To be on the safe side, check the presence of the key as follows:

if (Boolean.TRUE.equals(redisTemplate.hasKey(COMMON_HEAD_TOKEN_NAME + token))) {

The second warning means that your redisTemplate field has a raw type, however, the RedisTemplate class is parameterized. To get rid of the warning, define the redisTemplate field in the filter as follows:

@Resource
private RedisTemplate<String, Serializable> redisTemplate;