判断,日期是是昨天,前天 ,今天

最新推荐文章于 2024-08-16 11:33:05 发布

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最新推荐文章于 2024-08-16 11:33:05 发布

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原文链接：http://www.cnblogs.com/java-g/p/4223827.html

本文介绍了一种时间格式化的方法，能够将毫秒级的时间戳转换为更易读的日期和时间格式，并根据时间与当前日期的关系显示为“今天”、“昨天”等。此外，还提供了一个用于判断两个时间相差天数、小时数和分钟数的功能。

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/**
     * 判断时间    
     * 
     * @param time
     * @return
     */
    public static String formatDateTime(long time) {
        
    
//        
//        SimpleDateFormat format = new java.text.SimpleDateFormat(
//                "yyyy-MM-dd HH:mm");
        if (time == 0 || "".equals(time)) {
            return "";
        }
        Date date = null;
        date= new Date(1000*time);  //转换为妙
        SimpleDateFormat format = new java.text.SimpleDateFormat(
                "yyyy-MM-dd HH:mm");
        String datetime = format.format(date); //时间的 字符串
//        try {
//            date = format.parse(time);
//        } catch (ParseException e) {
//            e.printStackTrace();
//        } catch (java.text.ParseException e) {
//
//            e.printStackTrace();
//        }

        Calendar current = Calendar.getInstance();

        Calendar today = Calendar.getInstance(); // 今天

        today.set(Calendar.YEAR, current.get(Calendar.YEAR));
        today.set(Calendar.MONTH, current.get(Calendar.MONTH));
        today.set(Calendar.DAY_OF_MONTH, current.get(Calendar.DAY_OF_MONTH));
        // Calendar.HOUR——12小时制的小时数 Calendar.HOUR_OF_DAY——24小时制的小时数
        today.set(Calendar.HOUR_OF_DAY, 0);
        today.set(Calendar.MINUTE, 0);
        today.set(Calendar.SECOND, 0);

        Calendar yesterday = Calendar.getInstance(); // 昨天

        yesterday.set(Calendar.YEAR, current.get(Calendar.YEAR));
        yesterday.set(Calendar.MONTH, current.get(Calendar.MONTH));
        yesterday.set(Calendar.DAY_OF_MONTH,current.get(Calendar.DAY_OF_MONTH) - 1);
        yesterday.set(Calendar.HOUR_OF_DAY, 0);
        yesterday.set(Calendar.MINUTE, 0);
        yesterday.set(Calendar.SECOND, 0);
        
        Calendar mintianday = Calendar.getInstance(); // 明天

        mintianday.set(Calendar.YEAR, current.get(Calendar.YEAR));
        mintianday.set(Calendar.MONTH, current.get(Calendar.MONTH));
        mintianday.set(Calendar.DAY_OF_MONTH,current.get(Calendar.DAY_OF_MONTH) +1);
        mintianday.set(Calendar.HOUR_OF_DAY, 0);
        mintianday.set(Calendar.MINUTE, 0);
        mintianday.set(Calendar.SECOND, 0);
        
        Calendar houtianday = Calendar.getInstance(); // 后天

        houtianday.set(Calendar.YEAR, current.get(Calendar.YEAR));
        houtianday.set(Calendar.MONTH, current.get(Calendar.MONTH));
        houtianday.set(Calendar.DAY_OF_MONTH,current.get(Calendar.DAY_OF_MONTH) + 2);
        houtianday.set(Calendar.HOUR_OF_DAY, 0);
        houtianday.set(Calendar.MINUTE, 0);
        houtianday.set(Calendar.SECOND, 0);
        Calendar dahoutianday = Calendar.getInstance(); // da后天

        dahoutianday.set(Calendar.YEAR, current.get(Calendar.YEAR));
        dahoutianday.set(Calendar.MONTH, current.get(Calendar.MONTH));
        dahoutianday.set(Calendar.DAY_OF_MONTH,current.get(Calendar.DAY_OF_MONTH) + 3);
        dahoutianday.set(Calendar.HOUR_OF_DAY, 0);
        dahoutianday.set(Calendar.MINUTE, 0);
        dahoutianday.set(Calendar.SECOND, 0);
        current.setTime(date);

        if (current.after(today)&& current.before(mintianday)) {
            return "今天 " + datetime.split(" ")[1];
        } else if (current.before(today) && current.after(yesterday)) {

            return "昨天 " + datetime.split(" ")[1];
        } else if (current.after(mintianday) && current.before(houtianday)) {

            return "明天 " + datetime.split(" ")[1];
        }  else if (current.after(houtianday) && current.before(dahoutianday)) {

            return "后天 " + datetime.split(" ")[1];
        }else {
            int index = datetime.indexOf("-") + 1;
            return datetime.substring(index, datetime.length());
        }
    }

// 判断 两个时间  ,相差  几天 几小时  ,几分
public static boolean  isYuyue(long deliverydate ){
        deliverydate=deliverydate*1000;
          Date   nows= new   java.util.Date();  
          long nowTime = nows.getTime();
          long cha =  deliverydate-nowTime;
             
          Long day = (cha)/86400000; 
          Long hour = ((cha)%86400000)/3600000; 
          Long min = ((cha)%86400000%3600000)/60000; 
          if(day>0){
              return true;
          }else {
             if(hour>0){
                  return true;
             }else { //day
                 return false; //立即配送
             }
          }
    }