forked from plusone/plusone-commons
1. 删除 DateTimeTools 中的格式化器的缓存，应由调用方执行负责维护；
2. 新增 toYearString 和 toMonthString 方法。
This commit is contained in:
@@ -21,19 +21,17 @@ import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.time.LocalTime;
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import java.time.Month;
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import java.time.Year;
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import java.time.YearMonth;
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import java.time.ZoneId;
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import java.time.ZonedDateTime;
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import java.time.format.DateTimeFormatter;
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import java.time.chrono.IsoChronology;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.TimeZone;
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import javax.annotation.Nonnull;
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import com.google.common.cache.CacheBuilder;
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import com.google.common.cache.CacheLoader;
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import com.google.common.cache.LoadingCache;
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import com.google.common.base.Strings;
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import com.google.common.collect.Range;
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import xyz.zhouxy.plusone.commons.time.Quarter;
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import xyz.zhouxy.plusone.commons.time.YearQuarter;
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@@ -45,89 +43,32 @@ import xyz.zhouxy.plusone.commons.time.YearQuarter;
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*/
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public class DateTimeTools {
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/**
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* 缓存时间格式化器
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*/
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private static final LoadingCache<String, DateTimeFormatter> DATE_TIME_FORMATTER_CACHE = CacheBuilder.newBuilder()
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.maximumSize(20)
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.build(new CacheLoader<String, DateTimeFormatter>() {
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@Override
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public DateTimeFormatter load(@Nonnull String pattern) throws Exception {
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return DateTimeFormatter.ofPattern(pattern);
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}
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});
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/**
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* 获取时间格式化器
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*
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* @param pattern 时间格式
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* @return 时间格式化器
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*/
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public static DateTimeFormatter getDateTimeFormatter(String pattern) {
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return DATE_TIME_FORMATTER_CACHE.getUnchecked(pattern);
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}
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// #region - toString
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/**
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* 将日期时间转换为指定格式的字符串
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*
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* @param pattern 时间格式
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* @param dateTime 日期时间
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* @return 格式化的字符串
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*/
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public static String toString(String pattern, ZonedDateTime dateTime) {
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return getDateTimeFormatter(pattern).format(dateTime);
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public static String toYearString(int year) {
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return Integer.toString(year);
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}
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/**
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* 将时间戳转换为指定格式的字符串，使用系统默认时区
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*
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* @param pattern 时间格式
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* @param instant 时间戳
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* @return 格式化的字符串
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*/
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public static String toString(String pattern, Instant instant) {
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ZonedDateTime dateTime = instant.atZone(ZoneId.systemDefault());
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return toString(pattern, dateTime);
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public static String toYearString(Year year) {
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return year.toString();
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}
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/**
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* 将时间戳转换为指定格式的字符串，使用指定时区
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*
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* @param pattern 时间格式
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* @param instant 时间戳
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* @param zone 时区
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* @return 格式化的字符串
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*/
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public static String toString(String pattern, Instant instant, ZoneId zone) {
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ZonedDateTime dateTime = instant.atZone(zone);
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return toString(pattern, dateTime);
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public static String toMonthString(int monthValue) {
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return Strings.padStart(Integer.toString(monthValue), 2, '0');
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}
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// #endregion
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// #region - nowStr
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/**
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* 指定格式，返回当前时间戳对应的字符串
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*
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* @param pattern 时间格式
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* @return 格式化的字符串
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*/
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public static String nowStr(String pattern) {
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return toString(pattern, ZonedDateTime.now());
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public static String toMonthString(int monthValue, boolean padStart) {
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return padStart ? toMonthString(monthValue) : Integer.toString(monthValue);
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}
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/**
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* 指定格式，返回当前时间戳对应的字符串，使用指定时区
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*
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* @param pattern 时间格式
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* @param zone 时区
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* @return 格式化的字符串
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*/
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public static String nowStr(String pattern, ZoneId zone) {
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return toString(pattern, Instant.now().atZone(zone));
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public static String toMonthString(Month month) {
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final int monthValue = month.getValue();
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return Strings.padStart(Integer.toString(monthValue), 2, '0');
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}
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public static String toMonthString(Month month, boolean padStart) {
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final int monthValue = month.getValue();
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return padStart ? toMonthString(month) : Integer.toString(monthValue);
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}
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// #endregion
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@@ -708,6 +649,42 @@ public class DateTimeTools {
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// #endregion
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// ================================
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// #region - others
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// ================================
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public static LocalDate startDateOfYear(int year) {
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return LocalDate.ofYearDay(year, 1);
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}
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public static LocalDate endDateOfYear(int year) {
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return LocalDate.of(year, 12, 31);
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}
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public static LocalDateTime startOfNextDate(LocalDate date) {
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return date.plusDays(1L).atStartOfDay();
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}
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public static ZonedDateTime startOfNextDate(LocalDate date, ZoneId zone) {
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return date.plusDays(1L).atStartOfDay(zone);
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}
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public static Range<LocalDateTime> toDateTimeRange(LocalDate date) {
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return Range.closedOpen(date.atStartOfDay(), startOfNextDate(date));
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}
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public static Range<ZonedDateTime> toDateTimeRange(LocalDate date, ZoneId zone) {
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return Range.closedOpen(date.atStartOfDay(zone), startOfNextDate(date, zone));
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}
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public static boolean isLeapYear(int year) {
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return IsoChronology.INSTANCE.isLeapYear(year);
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}
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// ================================
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// #endregion - others
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// ================================
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/**
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* 私有构造方法，明确标识该常量类的作用。
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*/
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