spring-samples-for-all/spring-boot/spring-boot-kafka/README.md

java.time.Duration类下: private static final Pattern PATTERN = Pattern.compile("([-+]?)P(?:([-+]?[0-9]+)D)?" + "(T(?:([-+]?[0-9]+)H)?(?:([-+]?[0-9]+)M)?(?:([-+]?[0-9]+)(?:.,)?S)?)?", Pattern.CASE_INSENSITIVE);

1s 1.5s 0s 0.001S 1h 2d