时间工具类

最新推荐文章于 2024-04-10 14:45:39 发布

转载最新推荐文章于 2024-04-10 14:45:39 发布 · 265 阅读

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public class TimeUtil {

    /** 
     * 格式化时间 
     * @param time 
     * @return 
     */  
    private static String formatDateTime(String time) {  
        SimpleDateFormat sformat = new SimpleDateFormat("yyyy-MM-dd HH:mm");   
        if(time==null ||"".equals(time)){  
            return "";  
        }  
        Date date = null;  
        try {  
            date = sformat.parse(time);  
        } catch (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);  
        current.setTime(date);  
        if(current.after(today)){  
            return "今天 "+time.split(" ")[1];  
        }else if(current.before(today) && current.after(yesterday)){  
            return "昨天 "+time.split(" ")[1];  
        }else{  
        	String dateString = sformat.format(date);
            return dateString;  
        }  
    }  
    
    public static void main(String[] args) {  
        String time = formatDateTime("2016-08-11 24:01");  
        System.out.println("time:"+time);  
        time = formatDateTime("2016-12-16 15:45");  
        System.out.println("time:"+time);  
    }  
}