java判断今天,昨天,前天,不能用秒间隔的简单实例

实例如下：

一 json optstring 解析的timestamp string

二 long datesec = (long) (double.valueof(timestamp) * 1000);

三 date date=new date(datesec);

四 gettimestampstring(date);

public static string gettimestampstring(date paramdate) {
    string str = null;
    long l = paramdate.gettime();
    calendar localcalendar = gregoriancalendar.getinstance();
    localcalendar.settime(paramdate);
    int year = localcalendar.get(calendar.year);
    if(! issameyear(year)){ //去年，直接返回
      string paramdate2str = new simpledateformat("yyyy mm dd", locale.china).format(paramdate);
      return paramdate2str;
    }


    if (issameday(l)) {
      int i = localcalendar.get(calendar.hour_of_day);
      if (i > 17) {
        str = "晚上 hh:mm";//hh表示24小时,hh表示12小时进制，
      } else if ((i >= 0) && (i <= 6)) {
        str = "凌晨 hh:mm";
      } else if ((i > 11) && (i <= 17)) {
        str = "下午 hh:mm";
      } else {
        str = "上午 hh:mm";
      }
    } else if (isyesterday(l)) {
      str = "昨天 hh:mm";
    } else if (isbeforeyesterday(l)) {
      str = "前天 hh:mm";
    } else {
      str = "m月d日 hh:mm";
    }
    string paramdate2str = new simpledateformat(str, locale.china).format(paramdate);
    return paramdate2str;
  }

。。。

//  获取 今天开始结束 时间

 public static timeinfo gettodaystartandendtime() {

    calendar localcalendar1 = calendar.getinstance();
    localcalendar1.set(calendar.hour_of_day, 0);
    localcalendar1.set(calendar.minute, 0);
    localcalendar1.set(calendar.second, 0);
    localcalendar1.set(calendar.millisecond, 0);
    date localdate1 = localcalendar1.gettime();

    long l1 = localdate1.gettime();




    calendar localcalendar2 = calendar.getinstance();
    localcalendar2.set(calendar.hour_of_day, 23);
    localcalendar2.set(calendar.minute, 59);
    localcalendar2.set(calendar.second, 59);
    localcalendar2.set(calendar.millisecond, 999);
    date localdate2 = localcalendar2.gettime();

    long l2 = localdate2.gettime();




    timeinfo localtimeinfo = new timeinfo();
    localtimeinfo.setstarttime(l1);
    localtimeinfo.setendtime(l2);
    return localtimeinfo;

  }




//  获取 昨天开始结束 时间


  public static timeinfo getyesterdaystartandendtime() {
    calendar localcalendar1 = calendar.getinstance();
    localcalendar1.add(calendar.day_of_month, -1);//5
    localcalendar1.set(calendar.hour_of_day, 0);//11
    localcalendar1.set(calendar.minute, 0);//12
    localcalendar1.set(calendar.second, 0);//13
    localcalendar1.set(calendar.millisecond, 0);//calendar.millisecond
    date localdate1 = localcalendar1.gettime();
    long l1 = localdate1.gettime();


    calendar localcalendar2 = calendar.getinstance();
    localcalendar2.add(calendar.day_of_month, -1);//5
    localcalendar2.set(calendar.hour_of_day, 23);//11
    localcalendar2.set(calendar.minute, 59);//12
    localcalendar2.set(calendar.second, 59);//13
    localcalendar2.set(calendar.millisecond, 999);//calendar.millisecond
    date localdate2 = localcalendar2.gettime();
    long l2 = localdate2.gettime();


    timeinfo localtimeinfo = new timeinfo();
    localtimeinfo.setstarttime(l1);
    localtimeinfo.setendtime(l2);
    return localtimeinfo;
  }





//  获取 前天开始结束 时间


  public static timeinfo getbeforeyesterdaystartandendtime() {
    calendar localcalendar1 = calendar.getinstance();
    localcalendar1.add(calendar.day_of_month, -2);
    localcalendar1.set(calendar.hour_of_day, 0);
    localcalendar1.set(calendar.minute, 0);
    localcalendar1.set(calendar.second, 0);
    localcalendar1.set(calendar.millisecond, 0);
    date localdate1 = localcalendar1.gettime();
    long l1 = localdate1.gettime();


    calendar localcalendar2 = calendar.getinstance();
    localcalendar2.add(calendar.day_of_month, -2);
    localcalendar2.set(calendar.hour_of_day, 23);
    localcalendar2.set(calendar.minute, 59);
    localcalendar2.set(calendar.second, 59);
    localcalendar2.set(calendar.millisecond, 999);
    date localdate2 = localcalendar2.gettime();
    long l2 = localdate2.gettime();
    timeinfo localtimeinfo = new timeinfo();
    localtimeinfo.setstarttime(l1);
    localtimeinfo.setendtime(l2);
    return localtimeinfo;
  }





  private static boolean issameday(long paramlong) {
    timeinfo localtimeinfo = gettodaystartandendtime();
    return (paramlong > localtimeinfo.getstarttime()) && (paramlong < localtimeinfo.getendtime());
  }


  private static boolean isyesterday(long paramlong) {
    timeinfo localtimeinfo = getyesterdaystartandendtime();
    return (paramlong > localtimeinfo.getstarttime()) && (paramlong < localtimeinfo.getendtime());
  }





  private static boolean isbeforeyesterday(long paramlong) {
    timeinfo localtimeinfo = getbeforeyesterdaystartandendtime();
    return (paramlong > localtimeinfo.getstarttime()) && (paramlong < localtimeinfo.getendtime());
  }








  public static boolean issameyear(int year) {
    calendar cal = calendar.getinstance();
    int curyear = cal.get(calendar.year);
//    log.e("","curyear="+curyear);//2015
    return curyear==year;
  }


。。。。。。

public class timeinfo {
  private long starttime;
  private long endtime;


  public long getstarttime() {
    return this.starttime;
  }


  public void setstarttime(long paramlong) {
    this.starttime = paramlong;
  }


  public long getendtime() {
    return this.endtime;
  }


  public void setendtime(long paramlong) {
    this.endtime = paramlong;
  }
}

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