Java时间处理(...年前、...天前、...小时前)

这个功能还是挺实用的，比如我们发布了一条信息，以后再看这条信息，如要显示当前时间距离发布时间的时间间隔，备注一下： public static Date getDateByString(String time) {
Date date = null;
if(time == null) {
return date;
}

String pattern = "yyyy-MM-dd HH:mm:ss";
SimpleDateFormat format = new SimpleDateFormat(pattern);
try {
date = format.parse(time);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}

public static String getShortTime(String time) {
String shortString = null;
long now = Calendar.getInstance().getTimeInMillis();
Date date = getDateByString(time);
if(date == null) {
return shortString;
}
long delTime = (now - date.getTime()) / 1000;
if (delTime > 365 * 24 * 60 * 60) {
shortString = (int) (delTime / (365 * 24 * 60 * 60)) + "年前";
} else if (delTime > 24 * 60 * 60) {
shortString = (int) (delTime / (24 * 60 * 60)) + "天前";
} else if (delTime > 60 * 60) {
shortString = (int) (delTime / (60 * 60)) + "小时前";
} else if (delTime > 60) {
shortString = (int) (delTime / (60)) + "分前";
} else if (delTime > 1) {
shortString = delTime + "秒前";
} else {
shortString = "1秒前";
}
return shortString;
}调用

String time = "2012-02-28 10:40:55";
System.out.println(getShortTime(time));