【Java】PrettyTime

package test;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Created by luan on 2015/9/15.
 */
public class PrettyTime{

    private final static long minute = 60 * 1000;// 1分钟
    private final static long hour = 60 * minute;// 1小时
    private final static long day = 24 * hour;// 1天
    private final static long month = 31 * day;// 月
    private final static long year = 12 * month;// 年

    public static void main(String[] args) throws ParseException {

        String m = "2015-09-15 09:35:01";

        System.out.printf(getTimeFormatText(m));

    }

    /**
     * 返回文字描述的日期
     * @param date
     * @return
     */
    public static String getTimeFormatText(String date) {
        SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        Date d;
        try {
            d = f.parse(date);
        } catch (ParseException e) {
            return date;
        }

        return getTimeFormatText(d);
    }

    /**
     * 返回文字描述的日期
     *
     * @param date
     * @return
     */
    public static String getTimeFormatText(Date date) {
        if (date == null) {
            return null;
        }
        long diff = new Date().getTime() - date.getTime();
        long r = 0;
        if (diff > year) {
            r = (diff / year);
            return r + "年前";
        }
        if (diff > month) {
            r = (diff / month);
            return r + "个月前";
        }
        if (diff > day) {
            r = (diff / day);
            return r + "天前";
        }
        if (diff > hour) {
            r = (diff / hour);
            return r + "个小时前";
        }
        if (diff > minute) {
            r = (diff / minute);
            return r + "分钟前";
        }
        return "刚刚";
    }

}