Java操作时间工具

我就是我 2023-06-15 09:56 91阅读 0赞

package com.jhkj.application.common.utils;
    
    import java.text.DateFormat;
    import java.text.ParseException;
    import java.text.ParsePosition;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Date;
    
    public class DateUtils { 
        
        public static final String DATE_FORMAT_STR = "yyyy-MM-dd HH:mm:ss";
        public static final String DATE_FORMAT_PAR = "yyyy-MM-dd";
        
        public static final SimpleDateFormat formatLongDate = new SimpleDateFormat(
                "yyyy-MM-dd HH:mm:ss");
        public static final SimpleDateFormat format = new SimpleDateFormat(
                "yyyy-MM-dd");
        
        public static final SimpleDateFormat formatDate = new SimpleDateFormat(
                "yyyyMMddHHmmss");
        
        public static final SimpleDateFormat formatDate1 = new SimpleDateFormat(
                "yyyyMMdd");
        
        /** * 将短时间格式字符串yyyyMMddHHmmss转换为时间 * * @param strDate * @return */
        public static Date strToDate(String strDate) { 
            ParsePosition pos = new ParsePosition(0);
            Date strtodate = formatDate.parse(strDate, pos);
            return strtodate;
        }
        
        /** * 将短时间格式字符串yyyy-MM-dd转换为时间 * * @param strDate * @return */
        public static Date strToDate2(String strDate) { 
            ParsePosition pos = new ParsePosition(0);
            Date strtodate = format.parse(strDate, pos);
            return strtodate;
        }
    
        /** * * @param date * @return * @throws ParseException */
        public static Date parseStr2Date(String date) throws ParseException { 
            synchronized (formatLongDate) { 
                return formatLongDate.parse(date);
            }
        }
        
        /** * 将指定时间格式字符串转换为时间 * * @param strDate * @return */
        public static Date strToDate(String strDate, String pattern) { 
            ParsePosition pos = new ParsePosition(0);
            SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
            Date strtodate = dateFormat.parse(strDate, pos);
            return strtodate;
        }
        
        /** * 显示年月日 格式yyyyMMddHHmmss */
        public static String getDateFromString(Date date) { 
            return formatDate.format(date);
        }
    
    
        // 得到一个时间延后或前移几天的时间
        public static String getCountedDay(String strDate, Integer delay) { 
            try { 
                String mdate = "";
                Date d = strToDate2(strDate);
                long myTime = (d.getTime() / 1000) + delay * 24 * 60 * 60;
                d.setTime(myTime * 1000);
                mdate = format.format(d);
                return mdate;
            } catch (Exception e) { 
                return "";
            }
        }
        
        /** * 判断两个日期之间差了多少天，不足一天，则按一天计算，即20.01天也算21天 */
        public static int dateDiff(Date date1, Date date2) { 
            if (date1 == null || date2 == null)
                return 0;
            long baseNum = 3600 * 1000 * 24;
            long absNum = Math.abs(date1.getTime() - date2.getTime());
            long mod = absNum % baseNum;
            int num = (int) (absNum / baseNum);
            if (mod > 0)
                num++;
            return num;
        }
        
        /** * 判断两个日期之间差了多少天，不足一天，则按一天计算，即20.01天也算21天 */
        public static int dateDiff1(Date date1, Date date2) { 
            if (date1 == null || date2 == null)
                return 0;
            long baseNum = 3600 * 1000 * 24;
            long absNum = date1.getTime() - date2.getTime();
            long mod = absNum % baseNum;
            int num = (int) (absNum / baseNum);
            if (mod > 0)
                num++;
            return num;
        }
    
        /** * 得到一个日期接下来一年的天数 */
        public static int getYearDay(Date date) { 
            if (date == null)
                return 0;
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.YEAR,1);
    // calendar.add(Calendar.DATE,-1);
            Date endDate = calendar.getTime();
            long baseNum = 3600 * 1000 * 24;
            long absNum = endDate.getTime() - date.getTime();
            long mod = absNum % baseNum;
            int num = (int) (absNum / baseNum);
            if (mod > 0)
                num++;
            return num;
        }
    
    
        /** * 得到一个时间延后或前移几月的时间 * * @param strDate * @param delay * @return */
        public static String getCountedMonth(String strDate, Integer delay) { 
            try { 
                Date dd = strToDate(strDate);
                Calendar currentDate = Calendar.getInstance();
                currentDate.setTime(dd);
                currentDate.add(Calendar.MONDAY, delay);
                return formatDate.format(currentDate.getTime());
            } catch (Exception e) { 
                return "";
            }
        }
        
        
        /** * 得到一个时间延后或前移几月的时间 * * @param strDate * @param delay * @return */
        public static String getCountedMonthAll(String strDate, Integer delay) { 
            try { 
                Date dd = strToDate(strDate);
                Calendar currentDate = Calendar.getInstance();
                currentDate.setTime(dd);
                currentDate.add(Calendar.MONDAY, delay);
                return formatDate.format(currentDate.getTime());
            } catch (Exception e) { 
                return "";
            }
        }
        
        
        /** * 日期转毫秒 * * @param expireDate * @return */
        public static Long getSecondsFromDate(String expireDate) { 
            if (expireDate == null || expireDate.trim().equals(""))
                return 0l;
            Date date = null;
            try { 
                date = formatDate.parse(expireDate);
                return date.getTime();
            } catch (ParseException e) { 
                e.printStackTrace();
                return 0l;
            }
        }
        
        
        public static String formatDateStr(Date date) { 
            return formatDate.format(date);
        }
        
        public static String formatDateStr1(Date date) { 
            return formatDate1.format(date);
        }
        
        public static String formatDateStr2(Date date) { 
            return format.format(date);
        }
        
        public static String formatDateStr3(Date date) { 
            return formatLongDate.format(date);
        }
        
        
        public static Date parseStr2Date1(String date) throws ParseException { 
            return formatDate.parse(date);
        }
        
        
        /** * 根据身份编号获取生日Date * * @param idCard 身份编号 * @return 生日(yyyyMMdd) */
        public static Date getBirthByIdCard(String idCard) { 
            Date date = null;
            try { 
                DateFormat format = new SimpleDateFormat("yyyyMMdd");
                date = format.parse(idCard.substring(6, 14));
            } catch (ParseException e) { 
                e.printStackTrace();
            }
            return date;
        }
        
        /** * 获取当前时间字符串 */
        public static String getDateStr(Date date, String timePattern) { 
            String dateStr = null;
            try { 
                SimpleDateFormat sdf = new SimpleDateFormat(timePattern);
                dateStr = sdf.format(date);
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return dateStr;
        }
        
        /** * 获取当前时间下一个整点时间 */
        public static Date getNextNSecond(Date date, Integer n) { 
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.SECOND, n);
            return calendar.getTime();
        }
        
        /** * 获取当前时间下一个整点时间 */
        public static Date getNextHour(Date date) { 
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.HOUR, 1);
            return calendar.getTime();
        }
        
        
        /** * 获取当前时间后N天 */
        public static Date getNextNDay(Date date, Integer n) { 
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.DATE, n);
            return calendar.getTime();
        }
        
        /** * 获取当前时间后N年 */
        public static Date getNextNYear(Date date, Integer n) { 
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.YEAR, n);
            return calendar.getTime();
        }
        
        
        /** * 获取当前时间小时数（24小时制） */
        public static Integer getDateHour(Date date) { 
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            return calendar.get(Calendar.HOUR_OF_DAY);
        }
        
        /** * 根据生日计算年龄 * * @param birthday * @return */
        public static int getAgeByBirth(Date birthday) { 
            int age = 0;
            try { 
                Calendar cal = Calendar.getInstance();
                
                if (cal.before(birthday)) { 
                    return 0;
                }
                int yearNow = cal.get(Calendar.YEAR);
                int monthNow = cal.get(Calendar.MONTH);
                int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);
                cal.setTime(birthday);
                
                int yearBirth = cal.get(Calendar.YEAR);
                int monthBirth = cal.get(Calendar.MONTH);
                int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);
                
                age = yearNow - yearBirth;
                
                if (monthNow <= monthBirth) { 
                    if (monthNow == monthBirth) { 
                        if (dayOfMonthNow < dayOfMonthBirth) age--;
                    } else { 
                        age--;
                    }
                }
                return age;
                
            } catch (Exception e) { //兼容性更强,异常后返回数据
                return 0;
            }
        }
        
        /** * 根据身份编号获取年龄 * * @param idCard 身份编号 * @return 生日(yyyyMMdd) */
        public static int getAgeByIdCard(String idCard) { 
            Date date = null;
            try { 
                DateFormat format = new SimpleDateFormat("yyyyMMdd");
                date = format.parse(idCard.substring(6, 14));
                return getAgeByBirth(date);
            } catch (ParseException e) { 
                e.printStackTrace();
                return -1;
            }
        }
        
        /** * * 将时间戳转换为时间 * * @param stamp * @param rex * @return */
        public static String stampToDate(String stamp, String rex) { 
            String res;
    // SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat(rex);
            long lt = new Long(stamp);
            Date date = new Date(lt);
            res = simpleDateFormat.format(date);
            return res;
        }
        
    }