SpringBoot Can not get environment value to import if the value is a redis URI without the username

Hi, When trying to import a redis URI through the property values, the URI can not be imported when it is in the format:

redis://:password@host:port

result is:

://:@127.0.0.1:6371 

But imports fine when the format:

redis://username:password@host:port

result is:

redis://h:password@127.0.0.1:6371 

To test this I am just logging the value of the String:

@Configuration
@EnableRedisHttpSession(maxInactiveIntervalInSeconds=604800)
public class SessionConfig {
    @Value("${REDIS_URL}")
    private String redisStr2;
    private static final Logger log = LoggerFactory.getLogger(SessionConfig.class);
    @Autowired
    private Environment env;
    @Bean
    public JedisConnectionFactory connectionFactory() throws URISyntaxException {

        log.info(env.getProperty("REDIS_URL"));
        log.info(redisStr2);
        URI redisUri = null;
        if (redisStr.contains("://h:")) {
            redisUri = new URI(redisStr2);
        } else if (redisStr.contains("://:")){
            String newStr =  redisStr2.replace("://:", "://h:");
            log.info(newStr);
            redisUri = new URI(newStr );
        }

        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration(redisUri.getHost(), redisUri.getPort());
        redisStandaloneConfiguration.setPassword(RedisPassword.of(redisUri.getUserInfo().split(":",2)[1]));
        return new JedisConnectionFactory(redisStandaloneConfiguration);    
    }
}

Using:

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
         <version>2.1.15.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>