public static String durationFormat(Integer totalSeconds) { if (totalSeconds == null || totalSeconds < 1) { return "00:01"; } //将秒格式化成HH:mm:ss //这里应该用Duration更合理,但它不能格式化成字符串 //而使用LocalTime,在时间超过24小时后格式化也会有问题(!) int hours = totalSeconds / 3600; int rem = totalSeconds % 3600; int minutes = rem / 60; int seconds = rem % 60; if (hours <= 0) { return String.format("%02d:%02d", minutes, seconds); } return String.format("%02d:%02d:%02d", hours, minutes, seconds); }