joda-time处理常用日期操作
鉴于Date,Calendar对于日期的操作复杂性，joda-time在时间日期操作上简单化常理化，已经在java8中添加去类。
ＤateTime.parse()方法，在老版本中不存在。
public class DateJodaTimeUtils {
public static final int WEEK_DAYS = 7;
private static final String format_default = "yyyy-MM-dd HH:mm:ss";
private static final String format_yMd = "yyyy-MM-dd";
public static DateTime calendarToDateTime(Calendar c) {
return new DateTime(c);
}
public static String calendarToString(Calendar c, String... format) {
String pattern = format_default;
if (isNotEmpty(format)) {
pattern = format[0];
}
return calendarToDateTime(c).toString(pattern);
}
public static DateTime dateToDateTime(Date date) {
return new DateTime(date);
}
public static String dateToString(Date date, String... format) {
String pattern = format_default;
if (isNotEmpty(format)) {
pattern = format[0];
}
return dateToDateTime(date).toString(pattern);
}
public static DateTime stringToDateTime(String time) {
return DateTime.parse(time, DateTimeFormat.forPattern(format_default));
}
public static Calendar stringToCalendar(String time) {
return stringToDateTime(time).toCalendar(Locale.getDefault());
}
/**
* 二时间差值
*
* @param startCal
* @param endCal
* @param key
* d:天数，h:小时，m:分钟，s:秒数，默认:毫秒
* @return
*/
public static long compareCalendarByType(Calendar startCal, Calendar endCal, char... type) {
char key = 'd';
if (type != null && type.length > 0) {
key = type[0];
}
long diffNum = 0;
DateTime begin = setDateTimeToStart(calendarToDateTime(startCal), key);
DateTime end = setDateTimeToStart(calendarToDateTime(endCal), key);
Duration duration = new Duration(begin, end);
switch (key) {
case 'd':
diffNum = duration.getStandardDays();
break;
case 'h':
diffNum = duration.getStandardHours();
break;
case 'm':
diffNum = duration.getStandardMinutes();
break;
case 's':
diffNum = duration.getStandardSeconds();
break;
default:
diffNum = duration.getMillis();
break;
}
return diffNum;
}
/**
* 设置时间：月日时分秒为2000-01-01 00:00:00
*
* @param dateTime
* @param type
* y:年 Ｍ:月 d:天 h:小时 m:分钟
* @return
*/
public static DateTime setDateTimeToStart(DateTime dateTime, char key) {
if (dateTime == null) {
dateTime = DateTime.now();
}
switch (key) {
case 'y':
dateTime = dateTime.withMonthOfYear(1).withDayOfMonth(1).withHourOfDay(0).withMinuteOfHour(0).withSecondOfMinute(0);
break;
case 'M':
dateTime = dateTime.withDayOfMonth(1).withHourOfDay(0).withMinuteOfHour(0).withSecondOfMinute(0);
break;
case 'd':
dateTime = dateTime.withHourOfDay(0).withMinuteOfHour(0).withSecondOfMinute(0);
break;
case 'h':
dateTime = dateTime.withMinuteOfHour(0).withSecondOfMinute(0);
break;
case 'm':
dateTime = dateTime.withSecondOfMinute(0);
break;
}
return dateTime;
}
/**
* 加时间
*
* @param num
* @param key
* @param c
* @return
*/
public static Calendar plusNumToCalendar(int num, char key, Calendar... c) {
Calendar calendar = null;
if (isNotEmpty(c)) {
calendar = c[0];
} else {
calendar = Calendar.getInstance();
}
return plusNumToDateTime(num, key, calendarToDateTime(calendar)).toCalendar(Locale.getDefault());
}
public static DateTime plusNumToDateTime(int num, char key, DateTime... dt) {
DateTime dateTime = DateTime.now();
if (isNotEmpty(dt)) {
dateTime = dt[0];
}
switch (key) {
case 'y':
dateTime = dateTime.plusYears(num);
break;
case 'M':
dateTime = dateTime.plusMonths(num);
break;
case 'w':
dateTime = dateTime.plusWeeks(num);
break;
case 'd':
dateTime = dateTime.plusDays(num);
break;
case 'h':
dateTime = dateTime.plusHours(num);
break;
case 'm':
dateTime = dateTime.plusMinutes(num);
break;
case 's':
dateTime = dateTime.plusSeconds(num);
break;
}
return dateTime;
}
/**
* 返回23:59:59
*
* @param c
* @return
*/
public static Calendar getCalendarMidnight(Calendar c) {
return getDateTimeMidnight(c).toCalendar(Locale.getDefault());
}
public static DateTime getDateTimeMidnight(Calendar c) {
DateTime dateTime = calendarToDateTime(c);
dateTime = dateTime.withHourOfDay(23).withMinuteOfHour(59).withSecondOfMinute(59);
return dateTime;
}
/**
* 一周中的第几天。周一：１ 周二：２ ...
*
* @param c
* @return
*/
public static int getDayInWeek(Calendar... c) {
Calendar calendar = null;
if (isNotEmpty(c)) {
calendar = c[0];
} else {
calendar = Calendar.getInstance();
}
return new DateTime(calendar).getDayOfWeek();
}
/**
* 时间段内 日期列表
*
* @param c1
* @param c2
* @param format
* @return
*/
public static List
List
String pattern = format_yMd;
if (isNotEmpty(format)) {
pattern = format[0];
}
long days = compareCalendarByType(c1, c2, 'd');
DateTime start = calendarToDateTime(c1);
for (int i = 0; i <= days; i++) {
list.add(plusNumToDateTime(i, 'd', start).toString(pattern));
}
return list;
}
/**
* 日期在年中第几周
*
* @param c
* @return
*/
public static int getWeekInYear(Calendar... c) {
Calendar calendar = Calendar.getInstance();
if (isNotEmpty(c)) {
calendar = c[0];
}
return new DateTime(calendar).getWeekOfWeekyear();
}
public static int getWeekOfYMD(int year, int monthOfYear, int dayOfMonth) {
LocalDate date = new LocalDate(year, monthOfYear, dayOfMonth);
return date.weekOfWeekyear().get();
}
/**
* 某年某周第一天
*
* @param year
* @param weekOfWeekyear
* @return
*/
public static DateTime getFirstDayOfYearWeek(int year, int weekOfWeekyear) {
DateTime dateTime = DateTime.now();
dateTime = dateTime.withYear(year).withWeekOfWeekyear(weekOfWeekyear).dayOfWeek().withMinimumValue();
return dateTime;
}
public static DateTime getLastDayOfYearWeek(int year, int weekOfWeekyear) {
return DateTime.now().withYear(year).withWeekOfWeekyear(weekOfWeekyear).dayOfWeek().withMaximumValue();
}
public static DateTime getFirstDayInNowWeek() {
return DateTime.now().dayOfWeek().withMinimumValue();
}
public static DateTime getLastDayInNowWeek() {
return DateTime.now().dayOfWeek().withMaximumValue();
}
public static DateTime getLastDayOfYearMonth(int year, int monthOfYear) {
return DateTime.now().withYear(year).withMonthOfYear(monthOfYear).dayOfMonth().withMaximumValue();
}
public static DateTime getLastDayOfNowMonth() {
return DateTime.now().dayOfMonth().withMaximumValue();
}
/**
* 某周的七天日期
*
* @param year
* @param week
* @return
*/
public static Map
DateTime dateTime = DateTime.now();
return getDateOfWeekMap(dateTime.getYear(), dateTime.getWeekOfWeekyear(), format);
}
public static Map
String pattern = format_yMd;
if (isNotEmpty(format)) {
pattern = format[0];
}
Map
DateTime dateTime = DateTime.now().withYear(year).withWeekOfWeekyear(week).dayOfWeek().withMinimumValue();
for (int i = 0; i < WEEK_DAYS; i++) {
map.put((i + 1) + "", dateTime.plusDays(i).toString(pattern));
}
return map;
}
public static Map
return getWeekAssertDateMap(2, true, format);
}
public static Map
return getWeekAssertDateMap(type, true, format);
}
/**
* 今日起一周内对应日期
*
* @param type
* １：数字(1-7) 2:周几 default:星期几
* @param isChangeWeekToDate
* 默认true{key:type，value:日期}; false:{key:日期，value:type}
* @param format
* @return
*/
public static Map
Map
String pattern = "yyMMdd";
if (isNotEmpty(format)) {
pattern = format[0];
}
String[] weekArr = new String[] {};
switch (type) {
case 1:
weekArr = new String[] { "1", "2", "3", "4", "5", "6", "7" };
break;
case 2:
weekArr = new String[] { "周一", "周二", "周三", "周四", "周五", "周六", "周日" };
break;
default:
weekArr = new String[] { "星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日" };
break;
}
DateTime dateTime = DateTime.now();
for (int i = 0; i < weekArr.length; i++) {
int day = dateTime.getDayOfWeek();
if (isChangeWeekToDate) {
map.put(weekArr[day - 1], dateTime.toString(pattern));
} else {
map.put(dateTime.toString(pattern), weekArr[day - 1]);
}
dateTime = dateTime.plusDays(1);
}
return map;
}
public static
if (obj != null && obj.length > 0 && obj[0] != null) {
if (obj[0] instanceof String) {
if (StringUtils.isBlank(obj[0].toString())) {
return false;
}
}
return true;
}
return false;
}
}
若有功能不完，实现方法不简洁的，请多指点。