日期时间工具

引包参考
import org.springframework.stereotype.Component;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.Locale;
import java.util.Random;
分钟转小时
public static String minuteToHour(long minutes) {
long hours = (long) Math.floor(minutes / 60);
long minute = minutes % 60;
if (0 == minute) {
return hours + "小时";
} else if (hours > 0) {
return hours + "小时" + minute + "分钟";
} else {
return minute + "分钟";
}
}
获取当天开始/结束时间
public static Date getDayBegin(){
// 开始
Calendar cal=Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 0);//0点
cal.set(Calendar.MINUTE, 0);//0分
cal.set(Calendar.SECOND, 0);//0秒
cal.set(Calendar.MILLISECOND, 0);//0毫秒
return cal.getTime();

// 结束
Calendar cal=Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, 23);//23点
cal.set(Calendar.MINUTE, 59);//59分
cal.set(Calendar.SECOND, 59);//59秒
return cal.getTime();

}
获取昨天开始/结束时间
public static Date getBeginDayOfYesterday(){
// 开始
Calendar cal=Calendar.getInstance();
cal.setTime(getDayBegin());//当天开始时间
cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
return cal.getTime();

// 结束
Calendar cal=Calendar.getInstance();
cal.setTime(getDayEnd());//当天结束时间
cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
return cal.getTime();

}
获取明天开始/结束时间
public static Date getBeginDayOfTomorrow(){
// 开始
Calendar cal=Calendar.getInstance();
cal.setTime(getDayBegin());//当天开始时间
cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
return cal.getTime();

// 结束
Calendar cal=Calendar.getInstance();
cal.setTime(getDayEnd());//当天结束时间
cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
return cal.getTime();

}
获取某个日期的开始/结束时间
public static Timestamp getDayStartTime(Date d) {
// 开始
Calendar calendar=Calendar.getInstance();
if(null!=d){
calendar.setTime(d);
}
calendar.set(calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH),
calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
calendar.set(Calendar.MILLISECOND, 0);
return new Timestamp(calendar.getTimeInMillis());

// 结束
 Calendar calendar=Calendar.getInstance();
if(null!=d){
    calendar.setTime(d);
}
calendar.set(calendar.get(Calendar.YEAR),
             calendar.get(Calendar.MONTH),
             calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
calendar.set(Calendar.MILLISECOND, 999);
return new Timestamp(calendar.getTimeInMillis());

}
获取本周的开始/结束时间
public static Date getBeginDayOfWeek(){
// 开始
Date date=new Date();
if(date==null){
return null;
}
Calendar cal=Calendar.getInstance();
cal.setTime(date);
int dayOfWeek=cal.get(Calendar.DAY_OF_WEEK);
if(dayOfWeek==1){
dayOfWeek+=7;
}
cal.add(Calendar.DATE, 2-dayOfWeek);
return getDayStartTime(cal.getTime());

// 结束
Calendar cal=Calendar.getInstance();
cal.setTime(getBeginDayOfWeek());
cal.add(Calendar.DAY_OF_WEEK, 6);
Date weekEndSta = cal.getTime();
return getDayEndTime(weekEndSta);

}
获取上周开始/结束时间
public static Date getBeginDayOfLastWeek() {
// 开始
Date date=new Date();
if (date==null) {
return null;
}
Calendar cal=Calendar.getInstance();
cal.setTime(date);
int dayofweek=cal.get(Calendar.DAY_OF_WEEK);
if (dayofweek==1) {
dayofweek+=7;
}
cal.add(Calendar.DATE, 2-dayofweek-7);
return getDayStartTime(cal.getTime());

// 结束
Calendar cal=Calendar.getInstance();
cal.setTime(getBeginDayOfLastWeek());
cal.add(Calendar.DAY_OF_WEEK, 6);
Date weekEndSta = cal.getTime();
return getDayEndTime(weekEndSta);

}
获取今年是哪一年
public static Integer getNowYear(){
Date date = new Date();
GregorianCalendar gc=(GregorianCalendar)Calendar.getInstance();
gc.setTime(date);
return Integer.valueOf(gc.get(1));
}
获取本月是哪一月
public static int getNowMonth() {
Date date = new Date();
GregorianCalendar gc=(GregorianCalendar)Calendar.getInstance();
gc.setTime(date);
return gc.get(2) + 1;
}
获取本月的开始/结束时间
public static Date getBeginDayOfMonth() {
// 开始
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-1, 1);
return getDayStartTime(calendar.getTime());

// 结束
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-1, 1);
int day = calendar.getActualMaximum(5);
calendar.set(getNowYear(), getNowMonth()-1, day);
return getDayEndTime(calendar.getTime());

}
获取上月的开始/结束时间
public static Date getBeginDayOfLastMonth() {
// 开始
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-2, 1);
return getDayStartTime(calendar.getTime());

// 结束
Calendar calendar=Calendar.getInstance();
calendar.set(getNowYear(), getNowMonth()-2, 1);
int day = calendar.getActualMaximum(5);
calendar.set(getNowYear(), getNowMonth()-2, day);
return getDayEndTime(calendar.getTime());

}
获取本年的开始/结束时间
public static java.util.Date getBeginDayOfYear() {
// 开始
Calendar cal=Calendar.getInstance();
cal.set(Calendar.YEAR, getNowYear());
cal.set(Calendar.MONTH, Calendar.JANUARY);
cal.set(Calendar.DATE, 1);
return getDayStartTime(cal.getTime());

// 结束
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, getNowYear());
cal.set(Calendar.MONTH, Calendar.DECEMBER);
cal.set(Calendar.DATE, 31);
return getDayEndTime(cal.getTime());

}
两个日期相减得到的天数/毫秒数
public static int getDiffDays(Date beginDate, Date endDate) {
// 相差天数
if(beginDate==null||endDate==null) {
throw new IllegalArgumentException("getDiffDays param is null!");
}
long diff=(endDate.getTime()-beginDate.getTime())/(10006060*24);
int days = new Long(diff).intValue();
return days;

// 相差毫秒数
long date1ms=beginDate.getTime();
long date2ms=endDate.getTime();
return date2ms-date1ms;

}
获取当前日期前/后几个月的日期
Date dNow = new Date(); //当前时间
Calendar calendar = Calendar.getInstance(); //得到bai日历
calendar.setTime(dNow);//把当前时间赋给日du历
calendar.add(Calendar.MONTH, -3); //设置为前3月
Date dBefore = calendar.getTime(); //得到前3月的时间
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //设置时间格zhi式
String defaultStartDate = sdf.format(dBefore); //格式化前3月的时间
String defaultEndDate = sdf.format(dNow); //格式化当前时间
获取两个日期中的最大/最小日期
public static Date max(Date beginDate, Date endDate) {
// 最大
if(beginDate==null) {
return endDate;
}
if(endDate==null) {
return beginDate;
}
if(beginDate.after(endDate)) {//beginDate日期大于endDate
return beginDate;
}
return endDate;

// 最小
if(beginDate==null) {
    return endDate;
}
if(endDate==null) {
    return beginDate;
}
if(beginDate.after(endDate)) {
    return endDate;
}
return beginDate;

}
获取某月该季度的第一个月
public static Date getFirstSeasonDate(Date date) {
final int[] SEASON={ 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 };
Calendar cal=Calendar.getInstance();
cal.setTime(date);
int sean = SEASON[cal.get(Calendar.MONTH)];
cal.set(Calendar.MONTH, sean*3-3);
return cal.getTime();
}
获取某个日期之后/之前几天的日期
public static Date getNextDay(Date date, int i) {
// 之后几天
Calendar cal=new GregorianCalendar();
cal.setTime(date);
cal.set(Calendar.DATE,cal.get(Calendar.DATE)+i);
return cal.getTime();

// 之前几天
Calendar cal=new GregorianCalendar();
cal.setTime(date);
cal.set(Calendar.DATE, cal.get(Calendar.DATE)-i);
return cal.getTime();

}
Date转String
public static String dateFormat(Date date) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateString = formatter.format(date);
return dateString;
}
String转Date
/**

• 将"2015-08-31 21:08:06"型字符串转化为Date
• @param str
• @return
• @throws ParseException
  /
  public static Date StringToDate(String str) throws ParseException{
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  Date date = (Date) formatter.parse(str);
  return date;
  }
  CST时间类型字符串格式化输出
  /*
• 将CST时间类型字符串进行格式化输出
• @param str
• @return
• @throws ParseException
  /
  public static String CSTFormat(String str) throws ParseException{
  SimpleDateFormat formatter = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
  Date date = (Date) formatter.parse(str);
  return dateFormat(date);
  }
  long转Date
  public static Date LongToDare(long str) throws ParseException{
  return new Date(str 1000);
  }
  当前日期是否在[startDate, endDate]区间
  /**
• 判断当前日期是否在[startDate, endDate]区间
  *
• @param startDate 开始日期
• @param endDate 结束日期
• @return
  */
  public static boolean isEffectiveDate(Date startDate, Date endDate){
  if(startDate == null || endDate == null){

    return false;
  

  }
  long currentTime = new Date().getTime();
  if(currentTime >= startDate.getTime()

   && currentTime <= endDate.getTime()){
    return true;
  

  }
  return false;
  }
  两个日期间的间隔天数
  /**
• 得到二个日期间的间隔天数
• @param secondString：后一个日期
• @param firstString：前一个日期
• @return
  */
  public static String getTwoDay(String secondString, String firstString) {
  SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
  long day = 0;
  try {

    java.util.Date secondTime = myFormatter.parse(secondString);
    java.util.Date firstTime = myFormatter.parse(firstString);
    day = (secondTime.getTime() - firstTime.getTime()) / (24 * 60 * 60 * 1000);
  

  } catch (Exception e) {

    return "";
  

  }
  return day + "";
  }
  闰年判断
  /**
• 判断是否闰年
• @param ddate
• @return
  /
  public static boolean isLeapYear(String ddate) {
  /*

     * 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
     * 3.能被4整除同时能被100整除则不是闰年
     */
  

  Date d = strToDate(ddate);
  GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
  gc.setTime(d);
  int year = gc.get(Calendar.YEAR);
  if ((year % 400) == 0){

    return true;
  

  }else if ((year % 4) == 0){

    if ((year % 100) == 0){
        return false;
    }else{
        return true;
    }
  

  }else{

    return false;
  

  }
  }
  美国时间格式
  /**
• 返回美国时间格式
• @param str
• @return
  /
  public static String getEDate(String str) {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  ParsePosition pos = new ParsePosition(0);
  Date strtodate = formatter.parse(str, pos);
  String j = strtodate.toString();
  String[] k = j.split(" ");
  return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);
  }
  两个日期是否在同一周
  /*
• 判断二个时间是否在同一个周
• @param date1
• @param date2
• @return
  */
  public static boolean isSameWeekDates(Date date1, Date date2) {
  Calendar cal1 = Calendar.getInstance();
  Calendar cal2 = Calendar.getInstance();
  cal1.setTime(date1);
  cal2.setTime(date2);
  int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
  if(0 == subYear) {

    if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){
        return true;
    }
  

  }else if(1 == subYear && 11 == cal2.get(Calendar.MONTH)) {

    // 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
    if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){
        return true;
    }
  

  }else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {

    if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)){
        return true;
    }
  

  }
  return false;
  }
  获取星期几
  /**
• 根据一个日期，返回是星期几的字符串
• @param sdate
• @return
  */
  public static String getWeek(String sdate) {
  // 再转换为时间
  Date date = strToDate(sdate);
  Calendar c = Calendar.getInstance();
  c.setTime(date);
  // int hour=c.get(Calendar.DAY_OF_WEEK);
  // hour中存的就是星期几了，其范围 1~7
  // 1=星期日 7=星期六，其他类推
  return new SimpleDateFormat("EEEE").format(c.getTime());
  }

/**

• 根据一个日期，返回是星期几的字符串
• @param sdate
• @return
  */
  public static String getWeekStr(String sdate){
  String str = "";
  str = getWeek(sdate);
  if("1".equals(str)){

    str = "星期日";
  

  }else if("2".equals(str)){

    str = "星期一";
  

  }else if("3".equals(str)){

    str = "星期二";
  

  }else if("4".equals(str)){

    str = "星期三";
  

  }else if("5".equals(str)){

    str = "星期四";
  

  }else if("6".equals(str)){

    str = "星期五";
  

  }else if("7".equals(str)){

    str = "星期六";
  

  }
  return str;
  }
  两个时间之间的天数
  /**
• 两个时间之间的天数
• @param date1
• @param date2
• @return
  */
  public static long getDays(String date1, String date2) {
  if (date1 == null || date1.equals(""))

    return 0;
  

  if (date2 == null || date2.equals(""))

    return 0;
  

  // 转换为标准时间
  SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
  java.util.Date date = null;
  java.util.Date mydate = null;
  try {

    date = myFormatter.parse(date1);
    mydate = myFormatter.parse(date2);
  

  } catch (Exception e) {
  }
  long day = (date.getTime() - mydate.getTime()) / (24 60 60 * 1000);
  return day;
  }