邓博泽 java最全的DateUtil工具类

package com.kld.yijie.web.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;

/**
 * Created by shanks on 15/4/21.
 */
public class  DateUtil {
   private static Logger logger = LoggerFactory.getLogger(DateUtil.class);
   private static String defaultDatePattern = "yyyy-MM-dd";
   public static String secondDatePattern = "yyyy-MM-dd HH:mm:ss";
   /**
    * 格式：yyyy-MM-dd
    */
   public static final int FMT_DATE_YYYY_MM_DD = 1;

   /**
    * 格式：yyyyMMdd
    */
   public static final int FMT_DATE_YYYYMMDD = 2;

   /**
    * 格式：yyMMdd
    */
   public static final int FMT_DATE_YYMMDD = 3;

   /**
    * 格式：yyyy
    */
   public static final int FMT_DATE_YYYY = 4;

   /**
    * 格式：yyMM
    */
   public static final int FMT_DATE_YYMM = 5;

   /**
    * 格式：yyyyMM
    */
   public static final int FMT_DATE_YYYYMM = 6;

   /**
    * 格式：yyyy-MM-dd HH:mm:ss
    */
   public static final int FMT_DATE_YYYYMMDDHHmmss = 7;

   /**
    * 格式：yyyyMMddHHmmss
    */
   public static final int FMT_DATE_YYYYMMDDHHmmss1 = 8;

   /**
    * 格式：yyyy/MM/dd
    */
   public static final int FMT_DATE_YYYYMMDD9 = 9;

   /**
    * 格式：HH:mm:ss
    */
   public static final int FMT_DATE_HHMMSS = 10;

   /**
    * 格式：yyyy年MM月dd日
    */
   public static final int FMT_DATE_YYYY_MM_DD_CN = 11;

   /**
    * 格式：yyyy年MM月dd日 HH时mm分ss秒
    */
   public static final int FMT_DATE_YYYYMMDDHHmmss_CN = 12;

   /**
    * 格式：yyyy年MM月
    */
   public static final int FMT_DATE_YYYY_MM_CN = 13;

   /**
    * 格式：yyyy-MM-dd HH:mm
    */
   public static final int FMT_DATE_YYYY_MM_DDHHMM = 14;
   /**
    * 获得默认的 date pattern
    */
   public static String getDatePattern() {
      return defaultDatePattern;
   }
   /**
    * 使用参数Format格式化Date成字符串
    */
   public static String format(Date date, String pattern) {
      String returnValue = "";

      if (date != null) {
         SimpleDateFormat df = new SimpleDateFormat(pattern);
         returnValue = df.format(date);
      }

      return (returnValue);
   }
   /**
    * 根椐时间和格式获得时间
    *
    * @return String
    */
   public static String formatDate(Date date, int nFmt) {
      if (date == null) {
         return "";
      }
      SimpleDateFormat fmtDate = null;
      switch (nFmt) {
         default:
         case DateUtil.FMT_DATE_YYYY_MM_DD:
            fmtDate = new SimpleDateFormat("yyyy-MM-dd");
            break;
         case DateUtil.FMT_DATE_YYYYMMDD:
            fmtDate = new SimpleDateFormat("yyyyMMdd");
            break;
         case DateUtil.FMT_DATE_YYMMDD:
            fmtDate = new SimpleDateFormat("yyMMdd");
            break;
         case DateUtil.FMT_DATE_YYYY:
            fmtDate = new SimpleDateFormat("yyyy");
            break;
         case DateUtil.FMT_DATE_YYMM:
            fmtDate = new SimpleDateFormat("yyMM");
            break;
         case DateUtil.FMT_DATE_YYYYMM:
            fmtDate = new SimpleDateFormat("yyyyMM");
            break;
         case DateUtil.FMT_DATE_YYYYMMDDHHmmss:
            fmtDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            break;
         case DateUtil.FMT_DATE_YYYYMMDDHHmmss1:
            fmtDate = new SimpleDateFormat("yyyyMMddHHmmss");
            break;
         case DateUtil.FMT_DATE_YYYYMMDD9:
            fmtDate = new SimpleDateFormat("yyyy/MM/dd");
            break;
         case DateUtil.FMT_DATE_HHMMSS:
            fmtDate = new SimpleDateFormat("HH:mm:ss");
            break;
         case DateUtil.FMT_DATE_YYYY_MM_DD_CN:
            fmtDate = new SimpleDateFormat("yyyy年MM月dd日");
            break;
         case DateUtil.FMT_DATE_YYYYMMDDHHmmss_CN:
            fmtDate = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");
            break;
         case DateUtil.FMT_DATE_YYYY_MM_CN:
            fmtDate = new SimpleDateFormat("yyyy年MM月");
            break;
         case DateUtil.FMT_DATE_YYYY_MM_DDHHMM:
            fmtDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:");
            break;
      }
      return fmtDate.format(date);
   }
   /**
    * 使用预设格式将字符串转为Date
    */
   public static Date parse(String strDate) {
      return parse(strDate, getDatePattern());
   }

   /**
    * 使用参数Format将字符串转为Date
    */
   public static Date parse(String strDate, String pattern) {
      SimpleDateFormat df = new SimpleDateFormat(pattern);
      try {
         return df.parse(strDate);
      } catch (ParseException e) {
         logger.error(e.getMessage());
         return null;
      }
   }
   /**
    * 在日期上增加数个整月
    */
   public static Date addMonth(Date date, int n) {
      Calendar cal = Calendar.getInstance();
      cal.setTime(date);
      cal.add(Calendar.MONTH, n);
      return cal.getTime();
   }

   /**
    * 获得给定日期当前月份的第一天的日期
    * @param date
    * @return
    */
   public static Date getFirstDayOfMonth(Date date) {
      Calendar calendar = Calendar.getInstance();
      calendar.setTime(date);

      calendar.set(Calendar.DAY_OF_MONTH, 1);

      return calendar.getTime();
   }

   /**
    *  获得给定日期当前月份的最后一天的日期
    * @param date
    * @return
    */
   public static Date getLastDayOfMonth(Date date) {
      Date resultDate = getFirstDayOfMonth(addMonth(date, 1));

      Calendar calendar = Calendar.getInstance();
      calendar.setTime(resultDate);

      calendar.add(Calendar.DAY_OF_YEAR, -1);

      return calendar.getTime();
   }
   /**
    * 得到系统当前的日期和时间 格式为YYYY-MM-DD hh:mm:ss
    * @return
    */
   public static final String getSystemCurrentDateTime() {
      Calendar newCalendar = Calendar.getInstance();
      newCalendar.setTimeInMillis(System.currentTimeMillis());
      int year = newCalendar.get(Calendar.YEAR);
      int month = newCalendar.get(Calendar.MONTH) + 1;
      int day = newCalendar.get(Calendar.DAY_OF_MONTH);
      int hour = newCalendar.get(Calendar.HOUR_OF_DAY);
      int minute = newCalendar.get(Calendar.MINUTE);
      int second = newCalendar.get(Calendar.SECOND);
      return doTransform(year, month, day, hour, minute, second);
   }
   /**
    * 返回格式为YYYY-MM-DD hh:mm:ss
    *
    * @param year-年
    * @param month-月
    * @param day-日
    * @param hour-小时
    * @param minute-分钟
    * @param second-秒
    * @return
    */
   private static final String doTransform(int year, int month, int day, int hour, int minute, int second) {
      StringBuffer result = new StringBuffer();
      result.append(String.valueOf(year)).append("-").append(month < 10 ? "0" + String.valueOf(month) : String.valueOf(month)).append("-").append(day < 10 ? "0" + String.valueOf(day) : String.valueOf(day)).append(" ").append(hour < 10 ? "0" + String.valueOf(hour) : String.valueOf(hour)).append(
            ":").append(minute < 10 ? "0" + String.valueOf(minute) : String.valueOf(minute)).append(":").append(second < 10 ? "0" + String.valueOf(second) : String.valueOf(second));
      return result.toString();
   }
   /**
    * 根据转换格式，把Timestamp日期转换为字符串日期
    * @param Timestamp
    * @param nFmt
    * @return
    */
   public static String timestampToString(Timestamp Timestamp, int nFmt) {
      if (Timestamp == null) {
         return "";
      }
      java.util.Date d = new java.util.Date(Timestamp.getTime());
      return formatDate(d, nFmt);
   }
   /**
    * 根椐系统时间和格式获得时间
    *
    * @param nFmt
    * @return
    */
   public static String getSystemDate(int nFmt) {
      Calendar calendar = Calendar.getInstance();
      return formatDate(calendar.getTime(), nFmt);
   }
   /**
    * 使用预设Format格式化Date成字符串
    */
   public static String format(Date date) {
      return format(date, getDatePattern());
   }
   /**
    * 返回预设Format的当前日期字符串
    */
   public static String getToday() {
      Date today = new Date();
      return format(today);
   }
   /**
    *  返回量日期相差的天数
    *  date1:起始时间；date2截止时间;systemDate 系统当前时间
    * @throws ParseException
    * */
   public static String getSubDays(String stratDate) throws ParseException{
      long day;
      Date strDate = new SimpleDateFormat("yyyy-MM-dd").parse(stratDate);
      Date sysDate = new SimpleDateFormat("yyyy-MM-dd").parse(getSystemDate(1));
      day=(strDate.getTime()-sysDate.getTime())/(24*60*60*1000);
      return String.valueOf(day);
   }
   /**
    * ORA标准时间格式
    */
   private static final SimpleDateFormat ORA_DATE_TIME_FORMAT = new SimpleDateFormat("yyyyMMddHHmm");

   /**
    * 带时分秒的ORA标准时间格式
    *
    */
   private static final SimpleDateFormat ORA_DATE_TIME_EXTENDED_FORMAT = new SimpleDateFormat("yyyyMMddHHmmss");

   /**
    * 创建一个标准ORA时间格式的克隆
    *
    * @return 标准ORA时间格式的克隆
    */
   @SuppressWarnings("unused")
   private static synchronized DateFormat getOraDateTimeFormat() {
      SimpleDateFormat theDateTimeFormat = (SimpleDateFormat) ORA_DATE_TIME_FORMAT.clone();
      theDateTimeFormat.setLenient(false);
      return theDateTimeFormat;
   }
   /**
    * 创建一个带分秒的ORA时间格式的克隆
    *
    * @return 标准ORA时间格式的克隆
    */
   private static synchronized DateFormat getOraExtendDateTimeFormat() {
      SimpleDateFormat theDateTimeFormat = (SimpleDateFormat) ORA_DATE_TIME_EXTENDED_FORMAT.clone();
      theDateTimeFormat.setLenient(false);
      return theDateTimeFormat;
   }
   /**
    * 返回格式为YYYY-MM-DD hh:mm:ss
    *
    * @param date-输入格式为ORA标准时间格式
    * @return
    */
   private static String doTransform(String date) {
      StringBuffer buffer = new StringBuffer();
      buffer.append(date.substring(0, 4));
      buffer.append("-");
      buffer.append(date.substring(4, 6));
      buffer.append("-");
      buffer.append(date.substring(6, 8));
      buffer.append(" ");
      buffer.append(date.substring(8, 10));
      buffer.append(":");
      buffer.append(date.substring(10, 12));
      buffer.append(":");
      buffer.append(date.substring(12, 14));

      return buffer.toString();
   }
   /**
    * 将输入格式为2004-8-13 12:31:22类型的字符串转换为标准的Date类型
    *
    * @param dateStr
    * @return
    */
   public static synchronized Date toDate(String dateStr) {
      String[] list0 = dateStr.split(" ");
      String date = list0[0];
      String time = list0[1];
      String[] list1 = date.split("-");
      int year = new Integer(list1[0]).intValue();
      int month = new Integer(list1[1]).intValue();
      int day = new Integer(list1[2]).intValue();
      String[] list2 = time.split(":");
      int hour = new Integer(list2[0]).intValue();
      int min = new Integer(list2[1]).intValue();
      int second = new Integer(list2[2]).intValue();
      Calendar cale = Calendar.getInstance();
      cale.set(year, month - 1, day, hour, min, second);
      return cale.getTime();
   }
   public static String dateToStringFirst(Date date) {
      Calendar c = Calendar.getInstance();
      c.setTime(date);

      String dateToStr = c.get(Calendar.YEAR) + "-" + (c.get(Calendar.MONTH) + 1) + "-" + "01" + " 00:00:00";
      return dateToStr;
   }

   public static String dateToStringLast(Date date) {
      Calendar c = Calendar.getInstance();
      c.setTime(date);
      String dateToStr = c.get(Calendar.YEAR) + "-" + (c.get(Calendar.MONTH) + 1) + "-" + c.getActualMaximum(Calendar.DAY_OF_MONTH) + " 23:59:59";
      return dateToStr;
   }
   /*
     *获取当天是本年第几周
     */
    public static int getCurrentWeek(){

        Calendar calendar = Calendar.getInstance();
        calendar.setFirstDayOfWeek(Calendar.MONDAY);
        calendar.setTime(new Date());
      return   calendar.get(Calendar.WEEK_OF_YEAR)-2;
    }

    public static int getStartDate(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, -1);
        date = calendar.getTime();
        SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
        return Integer.parseInt(df.format(date));

    }

    public static int getendDate(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, -1);
        date = calendar.getTime();
        SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
        return Integer.parseInt(df.format(date));

    }
    //获取当前日期的字符串表达式
    public static String getCurrentDate(){
        Calendar calendar = Calendar.getInstance();
        Date date=calendar.getTime();
        SimpleDateFormat df = new SimpleDateFormat("yyMMdd");
        String sdate=df.format(date);
        return sdate;
    }
   //获取当前日期的字符串表达式
   public static String getCurrentDateFormat(String format){
      Calendar calendar = Calendar.getInstance();
      Date date=calendar.getTime();
      SimpleDateFormat df = new SimpleDateFormat(format);
      String sdate=df.format(date);
      return sdate;
   }
   public static String getCurrentDate2(){
      Calendar calendar = Calendar.getInstance();
      Date date=calendar.getTime();
      SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
      String sdate=df.format(date);
      return sdate;
   }
  //获取当前日期的字符串表达式
    public static Date getDate(){
        Calendar calendar = Calendar.getInstance();
        Date date=calendar.getTime();
        return date;
    }
   //指定日期格式与日期参数，格式化日期
   public static Date formatDate(String format,Date date){
      SimpleDateFormat df = new SimpleDateFormat(format);
      String d=df.format(date);
      try {
         date = df.parse(d);
      } catch (ParseException e) {

         e.printStackTrace();
      }
      return date;
   }
    //指定日期格式参数，给定字符串的日期参数，转换成该格式的日期
    public static Date toDate(String format,String time){
           SimpleDateFormat df = new SimpleDateFormat(format);
           System.out.println(format);
           Date date=null;

         if(time==null||"".equals(time)){
            return null;
         }
         try {
         date = df.parse(time);
      } catch (ParseException e) {

         e.printStackTrace();
      }
           return date;
    }
   //根据指定时间与时间分量、时间分量值计算日期
   public static Date countDate(String unit,int value,Date date){
      Calendar calendar =Calendar.getInstance();
      calendar.setTime(date);
      if("year".equals(unit)){
         calendar.set(calendar.YEAR, calendar.get(calendar.YEAR)+value);
      }else if("month".equals(unit)){
         calendar.set(calendar.MONTH,calendar.get(calendar.MONTH)+value);
      }else if("day".equals(unit)){
         calendar.set(calendar.DAY_OF_MONTH,calendar.get(calendar.DAY_OF_MONTH)+value);
      }else if("hour".equals(unit)){
         calendar.set(calendar.HOUR_OF_DAY,value);
      }else if("minute".equals(unit)){
         calendar.set(calendar.MINUTE,calendar.get(calendar.MINUTE)+value);
      }else if("second".equals(unit)){
         calendar.set(calendar.SECOND,value);
      }
      return calendar.getTime();
   }
   //根据指定时间与时间分量、时间分量值计算日期
   public static Date operDate(String operObj, Integer operNum, Date operDate) {
      Date date = null;
      try {
         Calendar calendar = Calendar.getInstance();
         if (operDate != null) {
            calendar.setTime(operDate);
         } else {
            calendar.setTime(new Date());
         }
         if (operObj.equals("year")) {
            int year = calendar.get(Calendar.YEAR);
            calendar.set(Calendar.YEAR, year + operNum.intValue());

         } else if (operObj.equals("month")) {
            int month = calendar.get(Calendar.MONTH);
            calendar.set(Calendar.MONTH, month + operNum.intValue());
         } else if (operObj.equals("day")) {
            int day = calendar.get(Calendar.DAY_OF_YEAR);
            calendar.set(Calendar.DAY_OF_YEAR, day + operNum.intValue());
         } else if (operObj.equals("hour")) {
            int hour = calendar.get(Calendar.HOUR_OF_DAY);
            calendar.set(Calendar.HOUR_OF_DAY, hour + operNum.intValue());
         } else if (operObj.equals("minute")) {
            int hour = calendar.get(Calendar.MINUTE);
            calendar.set(Calendar.MINUTE, hour + operNum.intValue());
         }
         date = calendar.getTime();
      } catch (Exception e) {

      }
      return date;
   }
   //根据时间分量计算以后时间
    public static Date countDate(String unit,Date date){
       if(unit.equals("年卡")){
          Calendar calendar =Calendar.getInstance();
          calendar.setTime(date);
          calendar.set(calendar.YEAR, calendar.get(calendar.YEAR)+1);
          System.out.println("执行了年卡");
          return calendar.getTime();
       }else if(unit.equals("季卡")){
          Calendar calendar =Calendar.getInstance();
          calendar.setTime(date);
          calendar.set(calendar.MONTH, calendar.get(calendar.MONTH)+3);
          System.out.println("执行了季卡");
          return calendar.getTime();
       }else{
          Calendar calendar =Calendar.getInstance();
          calendar.setTime(date);
          calendar.set(calendar.MONTH, calendar.get(calendar.MONTH)+1);
          System.out.println("执行了月卡");
          return calendar.getTime();
       }
    }
   //对日期天数的计算
   public static Date countDay(int day,Date date){
      Calendar calendar = Calendar.getInstance();
      calendar.setTime(date);
      calendar.set(calendar.DAY_OF_MONTH, calendar.get(calendar.DAY_OF_MONTH) + day);
      return calendar.getTime();
   }
   //根据当前时间计算当前的月份
   public static int getCurrentMoth(){
      Calendar calendar =Calendar.getInstance();
      return calendar.get(calendar.MONTH)+1;
   }
   //根据指定时间计算指定时间的月份
   public static int getMonthByDate(Date date){
      Calendar calendar =Calendar.getInstance();
      calendar.setTime(date);
      return calendar.get(calendar.MONTH)+1;
   }
   //根据月份返回对应的中文，比如1返回一月
   public static String getChineseMonth(int num){
      switch (num){
         case 1:return "一月";
         case 2:return "二月";
         case 3:return "三月";
         case 4:return "四月";
         case 5:return "五月";
         case 6:return "六月";
         case 7:return "七月";
         case 8:return "八月";
         case 9:return "九月";
         case 10:return "十月";
         case 11:return "十一月";
         default :return "十二月";
      }
   }
   //根据参数计算日期
   public static Date countDateByParam(int num){
      Calendar calendar =Calendar.getInstance();
      calendar.add(Calendar.MONTH,num);
      //calendar.set(Calendar.MONTH.MONTH,num);
      Date date=calendar.getTime();
      System.out.println(toString(date,"yyyy-MM-dd HH:mm:ss"));
      return calendar.getTime();
   }
   //计算指定日期的月份的第一天
   public static Date countDateFirstDay(Date date){
      Calendar calendar =Calendar.getInstance();
      calendar.setTime(date);
      final  int firstDay=calendar.getActualMinimum(calendar.DAY_OF_MONTH);
      Date firstDate=calendar.getTime();
      firstDate.setDate(firstDay);
      return firstDate;
   }
   //计算指定日期的月份的最后一天
   public static Date countDateLastDay(Date date){
      Calendar calendar =Calendar.getInstance();
      calendar.setTime(date);
      final int lastDay=calendar.getActualMaximum(calendar.DAY_OF_MONTH);
      Date lastDate=calendar.getTime();
      lastDate.setDate(lastDay);
      return  lastDate;
   }
   //根据月份计算当前是第几季度
   public static int getCurrentQuarter(int month){
      int quarter;
      if(month%3==0){
         quarter=month/3;
      }else{
         quarter=month/3+1;
      }
      return quarter;
   }
   //根据月份与消费需求类型（季2、月3、周4）计算日期范围
   public static HashMap<String,Date> getStartAndEndTime(int consumeType){
      int month= DateUtil.getCurrentMoth();
      Calendar calendar =Calendar.getInstance();
      //calendar.setTime(new Date());
      HashMap<String,Date> time=new HashMap<String,Date>();
      Date startTime;
      Date endTime;
      if(consumeType==2){
         int quarter=getCurrentQuarter(month);
         if(quarter==1){
            startTime=calendar.getTime();
            calendar.set(calendar.get(Calendar.YEAR),0,1);
            calendar.set(calendar.MONTH,2);
            int lastDay=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
            calendar.set(calendar.get(Calendar.YEAR),2,lastDay);
            endTime=calendar.getTime();
            time.put("startTime",startTime);
            time.put("endTime",endTime);
         }else if(quarter==2){
            calendar.set(calendar.get(Calendar.YEAR),3,1);
            startTime=calendar.getTime();
            calendar.set(calendar.MONTH,5);
            int lastDay=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
            calendar.set(calendar.get(Calendar.YEAR),5,lastDay);
            endTime=calendar.getTime();
            time.put("startTime", startTime);
            time.put("endTime",endTime);
         }else if(quarter==3){
            calendar.set(calendar.get(Calendar.YEAR),6,1);
            startTime=calendar.getTime();
            calendar.set(calendar.MONTH,8);
            int lastDay=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
            calendar.set(calendar.get(Calendar.YEAR),8,lastDay);
            endTime=calendar.getTime();
            time.put("startTime", startTime);
            time.put("endTime",endTime);
         }else if(quarter==4){
            calendar.set(calendar.get(Calendar.YEAR),9,1);
            startTime=calendar.getTime();
            calendar.set(calendar.MONTH,11);
            int lastDay=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
            calendar.set(calendar.get(Calendar.YEAR),11,lastDay);
            endTime=calendar.getTime();
            time.put("startTime", startTime);
            time.put("endTime",endTime);
         }
      }else if(consumeType==3){
         calendar.set(calendar.get(Calendar.YEAR),month-1,1);
         startTime=calendar.getTime();
         int lastDay=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
         calendar.set(calendar.get(Calendar.YEAR),month-1,lastDay);
         endTime=calendar.getTime();
         time.put("startTime", startTime);
         time.put("endTime",endTime);
      }else if(consumeType==4){
         int week=calendar.get(Calendar.DAY_OF_WEEK)-1;
         System.out.println("week:"+week);
         calendar.add(Calendar.DAY_OF_MONTH, -week+1);
         startTime=calendar.getTime();
         Calendar c=Calendar.getInstance();
         c.add(Calendar.DAY_OF_MONTH, 7-week);
         endTime=c.getTime();
         time.put("startTime", startTime);
         time.put("endTime",endTime);
      }
      return time;
   }

    public static String toString(Date date, String formatString){
       if(null == date)return null;
       SimpleDateFormat df = new SimpleDateFormat(formatString);
      return df.format(date);
    }
}