时间转换工具类

来源：互联网发布：linux怎么编译内核编辑：程序博客网时间：2024/04/29 02:37

public class TimeUtil {   /**    * 把一个时间戳转为描述性的文字    * 如果时间戳代表的时间是今天14：35 返回“14：35”    * 如果时间戳代表的时间是昨天14：35 返回“昨天 14：35”    *    * 如果时间戳代表的时间是更往前的14：35 返回“xxxx-xx-xx 14：35”    *    * @param time 秒值    * @return    */   public static String getTime(long time) {      String result = "";      Calendar calendar = Calendar.getInstance();      int week = calendar.get(Calendar.DAY_OF_WEEK) - 1;      //根据time与当前时间的差距计算差了多少天      long now = System.currentTimeMillis();//毫秒值      //计算差了多少天      int day = (int) (now / 1000 / 3600 / 24 - time / 1000 / 3600 / 24);      if (week!=0){         int dayCha = week - day;         if (day == 0) {            result = new SimpleDateFormat("HH:mm").format(time);            return result;         }         if (day == 1) {            result = "昨天 " + new SimpleDateFormat("HH:mm").format(time);            return result;         }         if (day >=2) {            if (dayCha >= 1 && dayCha <= 6) {               String weekTime = getWeekTime(time);               result = weekTime;               return result;            }else {               result = new SimpleDateFormat("yyyy-MM-dd").format(time);               return result;            }         }      }else {         //周日         week=7;         int dayCha = week - day;         if (day == 0) {            result = new SimpleDateFormat("HH:mm").format(time);            return result;         }         if (day == 1) {            result = "昨天 " + new SimpleDateFormat("HH:mm").format(time);            return result;         }         if (day >=2) {            if (dayCha >= 1 && dayCha <= 6) {               String weekTime = getWeekTime(time);               result = weekTime;               return result;            }else {               result = new SimpleDateFormat("yyyy-MM-dd").format(time);               return result;            }         }      }       return result;   }   private static String getWeekTime(long date) {      SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");      String time = df.format(date);      String Week = "";      Calendar c = Calendar.getInstance();      try {         c.setTime(df.parse(time));         } catch (ParseException e) {         // TODO Auto-generated catch block         e.printStackTrace();         }      int i = c.get(Calendar.DAY_OF_WEEK);      if (i== 1) {         Week += "星期天";         }      if (i ==2) {         Week += "星期一";         }      if (i ==3) {         Week += "星期二";         }      if (i == 4) {         Week += "星期三";         }      if (i == 5) {         Week += "星期四";         }      if (i == 6) {         Week += "星期五";         }      if (i == 7) {         Week += "星期六";         }      return Week;   }   public static String getMyTime(long time){      Calendar calendar=Calendar.getInstance();      String result = "";      int week =calendar.get(Calendar.DAY_OF_WEEK);      //根据time与当前时间的差距计算差了多少天      long now = System.currentTimeMillis();//毫秒值      //计算差了多少天      int day = (int)(now/1000/3600/24-time/1000/3600/24);      switch (day) {         case 0:            result = new SimpleDateFormat("HH:mm").format(time);            break;         case 1:            result = "昨天 "+new SimpleDateFormat("HH:mm").format(time);            break;         case 2:         case 3:         case 4:         case 5:         case 6:            //result = "前天 "+new SimpleDateFormat("HH:mm").format(time*1000);            String weekTime = getWeekTime(time);            result=weekTime;            //显示周几            break;         default:            result = new SimpleDateFormat("yyyy-MM-dd").format(time);            break;      }      return result;   }   public static String getTimestr(Date date){      SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");      String time = format.format(date);      return time;   }   public static String getTimeStrWithSec(Date date){      SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");      String time = format.format(date);      return time;   }   public static Date stringToDate(String dateString) {      ParsePosition position = new ParsePosition(0);      SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");      Date dateValue = simpleDateFormat.parse(dateString, position);      return dateValue;   }   public static long stringToLong(String dateString) {      ParsePosition position = new ParsePosition(0);      SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");      Date dateValue = simpleDateFormat.parse(dateString, position);      return dateValue.getTime();   }   public static long getDateTime(String sTime){      SimpleDateFormat format= new SimpleDateFormat("yyyy.MM");      String time=sTime;      Date date= null;        try {            date = format.parse(time);        } catch (ParseException e) {            e.printStackTrace();        }        if (date!=null){            return date.getTime();        }        System.out.print("Format To times:"+date.getTime());        return date.getTime();   }   public static long getDateTimeForXx(String sTime){      SimpleDateFormat format= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");      String time=sTime;      Date date= null;      try {         date = format.parse(time);      } catch (ParseException e) {         e.printStackTrace();      }      if (date!=null){         return date.getTime();      }      System.out.print("Format To times:"+date.getTime());      return date.getTime();   }}

对于时间的处理，在社交类的app需求最多。

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