计算从前某个时间距离现在经过了多久时间

- 日理万妓 2023-02-10 01:18 4阅读 0赞

### 文章目录 ###

*   *  摘要
     *  一、实现

## 摘要 ##

计算过去某个时间距离现在经过了多久时间。

## 一、实现 ##

package com.mtons.mblog.modules.template.method;
    
    import freemarker.template.TemplateModelException;
    import com.mtons.mblog.modules.template.BaseMethod;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.time.LocalDate;
    import java.time.Month;
    import java.util.Date;
    import java.util.List;
    
    /** * 计算从前某个时间距离现在经过了多久时间 * Created by langhsu on 2017/11/14. */
    public class TimeAgoMethod extends BaseMethod { 
        private static final long ONE_MINUTE = 60000L;
        private static final long ONE_HOUR = 3600000L;
        private static final long ONE_DAY = 86400000L;
        private static final long ONE_WEEK = 604800000L;
    
        private static final String ONE_SECOND_AGO = "秒前";
        private static final String ONE_MINUTE_AGO = "分钟前";
        private static final String ONE_HOUR_AGO = "小时前";
        private static final String ONE_DAY_AGO = "天前";
        private static final String ONE_MONTH_AGO = "月前";
        private static final String ONE_YEAR_AGO = "年前";
        private static final String ONE_UNKNOWN = "未知";
    
        @Override
        public Object exec(List arguments) throws TemplateModelException { 
            Date time = getDate(arguments, 0);
            return format(time);
        }
    
        public static String format(Date date) { 
            if (null == date) { 
                return ONE_UNKNOWN;
            }
            long delta = new Date().getTime() - date.getTime();
            if (delta < 1L * ONE_MINUTE) { 
                long seconds = toSeconds(delta);
                return (seconds <= 0 ? 1 : seconds) + ONE_SECOND_AGO;
            }
            if (delta < 45L * ONE_MINUTE) { 
                long minutes = toMinutes(delta);
                return (minutes <= 0 ? 1 : minutes) + ONE_MINUTE_AGO;
            }
            if (delta < 24L * ONE_HOUR) { 
                long hours = toHours(delta);
                return (hours <= 0 ? 1 : hours) + ONE_HOUR_AGO;
            }
            if (delta < 48L * ONE_HOUR) { 
                return "昨天";
            }
            if (delta < 30L * ONE_DAY) { 
                long days = toDays(delta);
                return (days <= 0 ? 1 : days) + ONE_DAY_AGO;
            }
            if (delta < 12L * 4L * ONE_WEEK) { 
                long months = toMonths(delta);
                return (months <= 0 ? 1 : months) + ONE_MONTH_AGO;
            } else { 
                long years = toYears(delta);
                return (years <= 0 ? 1 : years) + ONE_YEAR_AGO;
            }
        }
    
        private static long toSeconds(long date) { 
            return date / 1000L;
        }
    
        private static long toMinutes(long date) { 
            return toSeconds(date) / 60L;
        }
    
        private static long toHours(long date) { 
            return toMinutes(date) / 60L;
        }
    
        private static long toDays(long date) { 
            return toHours(date) / 24L;
        }
    
        private static long toMonths(long date) { 
            return toDays(date) / 30L;
        }
    
        private static long toYears(long date) { 
            return toMonths(date) / 365L;
        }
    
    
        public static void main(String[] args) throws ParseException { 
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
            Date pDate = dateFormat.parse("2016-12-01");
            System.out.println(format(pDate));
        }
    }