日期操作工具類集合
今天有空遂整理了下最近做項目用到的日期操作工具類，做下記錄，也供大家參考和指正。
注意：
本工具類為非線程安全的，多線程調用請根據實際情況自行修改。
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* @author will
* @2019/2/25 14:52
* 檔案說明：日期時間操作工具類
*/
@Slf4j
public class TimeUtils {
/**
* 字元串轉日期
*
* @param dateStr 日期字元串
* @param format 格式，比如yyyy-MM-dd HH:mm:ss、yyyy-MM-dd
* @return
*/
public static Date formatDate(String dateStr, String format) {
Date result = null;
try {
if (StringUtils.isBlank(dateStr)) {
throw new Exception("日期字元串不能為空");
}
if (StringUtils.isBlank(format)) {
throw new Exception("日期格式化格式不能為空");
}
SimpleDateFormat sdf = new SimpleDateFormat(format);
result = sdf.parse(dateStr);
} catch (Exception e) {
log.error("字元串轉日期異常 {}", e);
}
return result;
}
/**
* 日期轉字元串
*
* @param dateStr 日期
* @param format 格式，比如yyyy-MM-dd HH:mm:ss、yyyy-MM-dd
* @return
*/
public static String formatSting(Date dateStr, String format) {
String result = null;
try {
if (null == dateStr) {
throw new Exception("日期不能為空");
}
if (StringUtils.isBlank(format)) {
throw new Exception("日期格式化格式不能為空");
}
SimpleDateFormat sdf = new SimpleDateFormat(format);
result = sdf.format(dateStr);
} catch (Exception e) {
log.error("日期轉字元串異常 {}", e);
}
return result;
}
/**
* 擷取目前時間的上幾周或者下幾周某天日期
*
* @param n n為推遲的周數，0本周，-1向前推遲一周，1下周，依次類推
* @param week 想周幾，這裡就傳幾,請使用Calendar的常量，如Calendar.MONDAY（TUESDAY、WEDNESDAY...）
* @param date 日期
* @return
*/
public static String getBeforeAfterWeek(int n, int week, Date date) {
String monday = null;
try {
if (date == null) {
throw new Exception("日期不能為空");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.add(Calendar.DATE, n * 7);
cal.set(Calendar.DAY_OF_WEEK, week);
monday = formatSting(cal.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取上周或下周某天日期失敗 {}", e);
}
return monday;
}
/**
* 擷取傳入日期傳回當月的最後一天的日期，如傳入2018-6-11傳回2018-6-30
*
* @param date 日期
* @return
*/
public static String getThisMothLastDay(Date date) {
String lastDayOfMonth = null;
try {
if (date == null) {
throw new Exception("日期不能為空");
}
Calendar thisMonthDayNum = Calendar.getInstance();
thisMonthDayNum.setTime(date);
//把日期設定為當月第一天
thisMonthDayNum.set(Calendar.DATE, 1);
//日期復原一天，也就是最後一天
thisMonthDayNum.roll(Calendar.DATE, -1);
int lastDay = thisMonthDayNum.get(Calendar.DAY_OF_MONTH);
//設定月曆中月份的最大天數
thisMonthDayNum.set(Calendar.DAY_OF_MONTH, lastDay);
//格式化日期
lastDayOfMonth = formatSting(thisMonthDayNum.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取傳入日期當月最後一天異常 {}", e);
}
return lastDayOfMonth;
}
/**
* 擷取傳入日期傳回當月第一天的日期，如傳入2018-6-11傳回2018-6-01
*
* @param date 日期
* @return
*/
public static String getThisMothFirstDay(Date date) {
String lastDayOfMonth = null;
try {
if (date == null) {
throw new Exception("日期不能為空");
}
Calendar thisMonthDayNum = Calendar.getInstance();
thisMonthDayNum.setTime(date);
//把日期設定為當月第一天
thisMonthDayNum.set(Calendar.DATE, 1);
lastDayOfMonth = formatSting(thisMonthDayNum.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取傳入日期當月第一天異常 {}", e);
}
return lastDayOfMonth;
}
/**
* 擷取傳入日期上個月的最後一天，如傳入2018-6-11傳回2018-5-31
*
* @param date
* @return
*/
public static String getLastOneMothLastDay(Date date) {
String lastMonthStr = null;
try {
if (date == null) {
throw new Exception("日期不能為空");
}
Calendar lastMonthDay = Calendar.getInstance();
lastMonthDay.setTime(date);
lastMonthDay.set(Calendar.DAY_OF_MONTH, 1);
lastMonthDay.add(Calendar.DAY_OF_YEAR, -1);
lastMonthStr = DateFormatUtils.format(lastMonthDay, "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取傳入日期上個月最後一天異常 {}", e);
}
return lastMonthStr;
}
/**
* 擷取傳入日期上個月的第一天，如傳入2018-6-11傳回2018-5-1
*
* @param date
* @return
*/
public static String getLastOneMothFirstDay(Date date) {
String lastMonthStr = null;
try {
if (date == null) {
throw new Exception("日期不能為空");
}
Calendar lastMonthDay = Calendar.getInstance();
lastMonthDay.setTime(date);
lastMonthDay.set(Calendar.DAY_OF_MONTH, 1);
lastMonthDay.add(Calendar.DAY_OF_YEAR, -1);
//把日期設定為當月第一天
lastMonthDay.set(Calendar.DATE, 1);
lastMonthStr = DateFormatUtils.format(lastMonthDay, "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取傳入日期上個月第一天異常 {}", e);
}
return lastMonthStr;
}
/**
* 擷取年某某月有多少天
*
* @param year
* @param month
* @return
*/
public static Integer dayNum(Integer year, Integer month) {
Integer day = null;
try {
Calendar c = Calendar.getInstance();
//輸入類型為int類型
c.set(year, month, 0);
return c.get(Calendar.DAY_OF_MONTH);
} catch (NumberFormatException e) {
log.error("擷取年某某月有多少天異常 {}", e);
}
return day;
}
/**
* 獲得本周一與目前日期相差的天數
*
* @return
*/
public static int getMondayPlus() {
Calendar cd = Calendar.getInstance();
int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK);
if (dayOfWeek == 1) {
return -6;
} else {
return 2 - dayOfWeek;
}
}
/**
* 獲得目前周周一的日期
*
* @return
*/
public static String getCurrentMonday() {
int mondayPlus = getMondayPlus();
GregorianCalendar currentDate = new GregorianCalendar();
currentDate.add(GregorianCalendar.DATE, mondayPlus);
Date monday = currentDate.getTime();
String preMonday = formatSting(monday, "yyyy-MM-dd");
return preMonday;
}
/**
* 獲得目前周周日的日期
*
* @return
*/
public static String getPreviousSunday() {
int mondayPlus = getMondayPlus();
GregorianCalendar currentDate = new GregorianCalendar();
currentDate.add(GregorianCalendar.DATE, mondayPlus + 6);
Date monday = currentDate.getTime();
String preMonday = formatSting(monday, "yyyy-MM-dd");
return preMonday;
}
/**
* 擷取目前系統前一天日期
*
* @return
*/
public static String getBeforeOneDay() {
Date date = new Date();
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DAY_OF_MONTH, -1);
date = calendar.getTime();
String day = DateFormatUtils.format(date, "yyyy-MM-dd");
return day;
}
/**
* 獲得指定日期的前一天
*
* @param specifiedDay
* @return
* @throws Exception
*/
public static String getSpecifiedDayBefore(String specifiedDay) {
String dayBefore = null;
try {
Calendar c = Calendar.getInstance();
Date date = null;
date = formatDate(specifiedDay, "yy-MM-dd");
c.setTime(date);
int day = c.get(Calendar.DATE);
c.set(Calendar.DATE, day - 1);
dayBefore = formatSting(c.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("獲得指定日期的前一天異常 {}", e);
}
return dayBefore;
}
/**
* 獲得指定日期本周一的日期
*
* @param time
* @return
*/
public static String getWeekFirst(String time) {
String data1 = null;
try {
Calendar cal = Calendar.getInstance();
cal.setTime(formatDate(time, "yyyy-MM-dd"));
int d = 0;
if (cal.get(Calendar.DAY_OF_WEEK) == 1) {
d = -6;
} else {
d = 2 - cal.get(Calendar.DAY_OF_WEEK);
}
cal.add(Calendar.DAY_OF_WEEK, d);
// 所在周開始日期
data1 = formatSting(cal.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("獲得指定日期周一異常 {}", e);
}
return data1;
}
/**
* 獲得指定日期本周日的日期
*
* @param time
* @return
*/
public static String getWeekLast(String time) {
String imptimeMi = null;
try {
Calendar cal = Calendar.getInstance();
cal.setTime(formatDate(time, "yyyy-MM-dd"));
//判斷要計算的日期是否是周日，如果是則減一天計算周六的，否則會出問題，計算到下一周去了
//獲得目前日期是一個星期的第幾天
int dayWeek = cal.get(Calendar.DAY_OF_WEEK);
if (1 == dayWeek) {
cal.add(Calendar.DAY_OF_MONTH, -1);
}
//設定一個星期的第一天，按中國的習慣一個星期的第一天是星期一
cal.setFirstDayOfWeek(Calendar.MONDAY);
//獲得目前日期是一個星期的第幾天
int day = cal.get(Calendar.DAY_OF_WEEK);
//根據月曆的規則，給目前日期減去星期幾與一個星期第一天的內插補點
cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);
cal.add(Calendar.DATE, 6);
imptimeMi = formatSting(cal.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("獲得指定日期本周日的日期異常 {}", e);
}
return imptimeMi;
}
/**
* 獲得指定日期周一，動态加減天數
*
* @param time
* @param num 加減天數,減則為-
* @return
*/
public static String getTuesday(String time, int num) {
String imptimeMi = null;
try {
Calendar cal = Calendar.getInstance();
cal.setTime(formatDate(time, "yyyy-MM-dd"));
//判斷要計算的日期是否是周日，如果是則減一天計算周六的，否則會出問題，計算到下一周去了
//獲得目前日期是一個星期的第幾天
int dayWeek = cal.get(Calendar.DAY_OF_WEEK);
if (1 == dayWeek) {
cal.add(Calendar.DAY_OF_MONTH, -1);
}
//設定一個星期的第一天，按中國的習慣一個星期的第一天是星期一
cal.setFirstDayOfWeek(Calendar.MONDAY);
//獲得目前日期是一個星期的第幾天
int day = cal.get(Calendar.DAY_OF_WEEK);
//根據月曆的規則，給目前日期減去星期幾與一個星期第一天的內插補點
cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - day);
cal.add(Calendar.DATE, num);
imptimeMi = formatSting(cal.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("獲得指定日期周一，動态加減天數，異常 {}", e);
}
return imptimeMi;
}
/**
* 擷取某個日期當天的開始時間，2019-05-10 00:00:00.0
*
* @param d
* @return
*/
public static Timestamp getDayStartTime(Date d) {
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());
}
/**
* 擷取某個日期當天的結束時間，2019-05-10 23:59:59.999
*
* @param d
* @return
*/
public static Timestamp getDayEndTime(Date d) {
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());
}
/**
* 擷取指定日期上周的開始時間
*
* @param time
* @return
*/
public static String getBeginDayOfLastWeek(String time) {
String r = null;
try {
if (time == null) {
throw new Exception("日期不能為空");
}
Calendar cal = Calendar.getInstance();
cal.setTime(formatDate(time, "yyyy-MM-dd"));
int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
if (dayofweek == 1) {
dayofweek += 7;
}
cal.add(Calendar.DATE, 2 - dayofweek - 7);
r = formatSting(cal.getTime(), "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取指定日期上周的開始時間異常 {}", e);
}
return r;
}
/**
* 擷取指定日期上周的結束時間
*
* @param time
* @return
*/
public static String getEndDayOfLastWeek(String time) {
String day = null;
try {
if (time == null) {
throw new Exception("日期不能為空");
}
Calendar cal = Calendar.getInstance();
cal.setTime(formatDate(getBeginDayOfLastWeek(time), "yyyy-MM-dd"));
cal.add(Calendar.DAY_OF_WEEK, 6);
Date weekEndSta = cal.getTime();
day = formatSting(weekEndSta, "yyyy-MM-dd");
} catch (Exception e) {
log.error("擷取指定日期上周的結束時間異常 {}", e);
}
return day;
}
/**
* 給定某日期，判斷是星期幾
*
* @param date
* @return
*/
public static String getTimeToWeek(String date) {
SimpleDateFormat sdw = null;
Date d = null;
try {
if (date == null) {
throw new Exception("日期不能為空");
}
sdw = new SimpleDateFormat("E");
d = null;
d = formatDate(date, "yyyy-MM-dd");
} catch (Exception e) {
log.error("給定某日期，判斷是星期幾異常 {}", e);
}
return sdw.format(d);
}
/**
* 通過時間秒毫秒數判斷兩個時間的間隔
*
* @param date1
* @param date2
* @return
*/
public static int differentDaysByMillisecond(Date date1, Date date2) {
int days = (int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24));
return days;
}
/**
* 擷取兩個日期之間的日期，包括開始結束日期
*
* @param start 開始日期
* @param end 結束日期
* @return 日期集合
*/
public static List<Date> getBetweenDates(Date start, Date end) {
List<Date> result = new ArrayList<Date>();
Calendar tempStart = Calendar.getInstance();
tempStart.setTime(start);
tempStart.add(Calendar.DAY_OF_YEAR, 1);
Calendar tempEnd = Calendar.getInstance();
tempEnd.setTime(end);
result.add(start);
while (tempStart.before(tempEnd)) {
result.add(tempStart.getTime());
tempStart.add(Calendar.DAY_OF_YEAR, 1);
}
result.add(end);
return result;
}
/**
* 日期轉時間戳
*
* @param date
* @return
*/
public static Integer transForMilliSecond(Date date) {
try {
if (date == null) throw new Exception("日期不能為空");
} catch (Exception e) {
e.printStackTrace();
}
return (int) (date.getTime() / 1000);
}
/**
* 日期字元串轉時間戳,可動态加減日期
*
* @param dateStr
* @return
*/
public static Integer transForMilliSecond2(String dateStr, int num) {
Date date = TimeUtils.formatDate(dateStr, "yyyy-MM-dd");
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DATE, num);
return date == null ? null : TimeUtils.transForMilliSecond(calendar.getTime());
}
/**
* 日期字元串動态加減日期
*
* @param dateStr
* @return
*/
public static String timeAddSub(String dateStr, int num) {
Date date = TimeUtils.formatDate(dateStr, "yyyy-MM-dd");
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DATE, num);
Date date1 = calendar.getTime();
return TimeUtils.formatSting(date1, "yyyy-MM-dd");
}
/**
* 日期字元串動态加減日期
*
* @param dateStr
* @param num
* @param fomt 格式
* @return
*/
public static String timeAddSub(String dateStr, int num, String fomt) {
Date date = TimeUtils.formatDate(dateStr, fomt);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.DATE, num);
Date date1 = calendar.getTime();
return TimeUtils.formatSting(date1, fomt);
}
}
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