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package cn.hutool.core.date;

import cn.hutool.core.date.format.FastDateFormat;

import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.Locale;
import java.util.TimeZone;
import java.util.regex.Pattern;

/**
 * 日期格式化类,提供常用的日期格式化对象
 *
 * @author Looly
 */
public class DatePattern {

	/**
	 * 标准日期时间正则,每个字段支持单个数字或2个数字,包括:
	 * 
	 *     yyyy-MM-dd HH:mm:ss.SSSSSS
	 *     yyyy-MM-dd HH:mm:ss.SSS
	 *     yyyy-MM-dd HH:mm:ss
	 *     yyyy-MM-dd HH:mm
	 *     yyyy-MM-dd
	 * 
* * @since 5.3.6 */ public static final Pattern REGEX_NORM = Pattern.compile("\\d{4}-\\d{1,2}-\\d{1,2}(\\s\\d{1,2}:\\d{1,2}(:\\d{1,2})?(.\\d{1,6})?)?"); //-------------------------------------------------------------------------------------------------------------------------------- Normal /** * 年格式:yyyy */ public static final String NORM_YEAR_PATTERN = "yyyy"; /** * 年月格式:yyyy-MM */ public static final String NORM_MONTH_PATTERN = "yyyy-MM"; /** * 年月格式 {@link FastDateFormat}:yyyy-MM */ public static final FastDateFormat NORM_MONTH_FORMAT = FastDateFormat.getInstance(NORM_MONTH_PATTERN); /** * 年月格式 {@link FastDateFormat}:yyyy-MM */ public static final DateTimeFormatter NORM_MONTH_FORMATTER = createFormatter(NORM_MONTH_PATTERN); /** * 简单年月格式:yyyyMM */ public static final String SIMPLE_MONTH_PATTERN = "yyyyMM"; /** * 简单年月格式 {@link FastDateFormat}:yyyyMM */ public static final FastDateFormat SIMPLE_MONTH_FORMAT = FastDateFormat.getInstance(SIMPLE_MONTH_PATTERN); /** * 简单年月格式 {@link FastDateFormat}:yyyyMM */ public static final DateTimeFormatter SIMPLE_MONTH_FORMATTER = createFormatter(SIMPLE_MONTH_PATTERN); /** * 标准日期格式:yyyy-MM-dd */ public static final String NORM_DATE_PATTERN = "yyyy-MM-dd"; /** * 标准日期格式 {@link FastDateFormat}:yyyy-MM-dd */ public static final FastDateFormat NORM_DATE_FORMAT = FastDateFormat.getInstance(NORM_DATE_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyy-MM-dd */ public static final DateTimeFormatter NORM_DATE_FORMATTER = createFormatter(NORM_DATE_PATTERN); /** * 标准时间格式:HH:mm:ss */ public static final String NORM_TIME_PATTERN = "HH:mm:ss"; /** * 标准时间格式 {@link FastDateFormat}:HH:mm:ss */ public static final FastDateFormat NORM_TIME_FORMAT = FastDateFormat.getInstance(NORM_TIME_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:HH:mm:ss */ public static final DateTimeFormatter NORM_TIME_FORMATTER = createFormatter(NORM_TIME_PATTERN); /** * 标准日期时间格式,精确到分:yyyy-MM-dd HH:mm */ public static final String NORM_DATETIME_MINUTE_PATTERN = "yyyy-MM-dd HH:mm"; /** * 标准日期时间格式,精确到分 {@link FastDateFormat}:yyyy-MM-dd HH:mm */ public static final FastDateFormat NORM_DATETIME_MINUTE_FORMAT = FastDateFormat.getInstance(NORM_DATETIME_MINUTE_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyy-MM-dd HH:mm */ public static final DateTimeFormatter NORM_DATETIME_MINUTE_FORMATTER = createFormatter(NORM_DATETIME_MINUTE_PATTERN); /** * 标准日期时间格式,精确到秒:yyyy-MM-dd HH:mm:ss */ public static final String NORM_DATETIME_PATTERN = "yyyy-MM-dd HH:mm:ss"; /** * 标准日期时间格式,精确到秒 {@link FastDateFormat}:yyyy-MM-dd HH:mm:ss */ public static final FastDateFormat NORM_DATETIME_FORMAT = FastDateFormat.getInstance(NORM_DATETIME_PATTERN); /** * 标准日期时间格式,精确到秒 {@link FastDateFormat}:yyyy-MM-dd HH:mm:ss */ public static final DateTimeFormatter NORM_DATETIME_FORMATTER = createFormatter(NORM_DATETIME_PATTERN); /** * 标准日期时间格式,精确到毫秒:yyyy-MM-dd HH:mm:ss.SSS */ public static final String NORM_DATETIME_MS_PATTERN = "yyyy-MM-dd HH:mm:ss.SSS"; /** * 标准日期时间格式,精确到毫秒 {@link FastDateFormat}:yyyy-MM-dd HH:mm:ss.SSS */ public static final FastDateFormat NORM_DATETIME_MS_FORMAT = FastDateFormat.getInstance(NORM_DATETIME_MS_PATTERN); /** * 标准日期时间格式,精确到毫秒 {@link FastDateFormat}:yyyy-MM-dd HH:mm:ss.SSS */ public static final DateTimeFormatter NORM_DATETIME_MS_FORMATTER = createFormatter(NORM_DATETIME_MS_PATTERN); /** * ISO8601日期时间格式,精确到毫秒:yyyy-MM-dd HH:mm:ss,SSS */ public static final String ISO8601_PATTERN = "yyyy-MM-dd HH:mm:ss,SSS"; /** * ISO8601日期时间格式,精确到毫秒 {@link FastDateFormat}:yyyy-MM-dd HH:mm:ss,SSS */ public static final FastDateFormat ISO8601_FORMAT = FastDateFormat.getInstance(ISO8601_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyy-MM-dd HH:mm:ss,SSS */ public static final DateTimeFormatter ISO8601_FORMATTER = createFormatter(ISO8601_PATTERN); /** * 标准日期格式:yyyy年MM月dd日 */ public static final String CHINESE_DATE_PATTERN = "yyyy年MM月dd日"; /** * 标准日期格式 {@link FastDateFormat}:yyyy年MM月dd日 */ public static final FastDateFormat CHINESE_DATE_FORMAT = FastDateFormat.getInstance(CHINESE_DATE_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyy年MM月dd日 */ public static final DateTimeFormatter CHINESE_DATE_FORMATTER = createFormatter(CHINESE_DATE_PATTERN); /** * 标准日期格式:yyyy年MM月dd日 HH时mm分ss秒 */ public static final String CHINESE_DATE_TIME_PATTERN = "yyyy年MM月dd日HH时mm分ss秒"; /** * 标准日期格式 {@link FastDateFormat}:yyyy年MM月dd日HH时mm分ss秒 */ public static final FastDateFormat CHINESE_DATE_TIME_FORMAT = FastDateFormat.getInstance(CHINESE_DATE_TIME_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyy年MM月dd日HH时mm分ss秒 */ public static final DateTimeFormatter CHINESE_DATE_TIME_FORMATTER = createFormatter(CHINESE_DATE_TIME_PATTERN); //-------------------------------------------------------------------------------------------------------------------------------- Pure /** * 标准日期格式:yyyyMMdd */ public static final String PURE_DATE_PATTERN = "yyyyMMdd"; /** * 标准日期格式 {@link FastDateFormat}:yyyyMMdd */ public static final FastDateFormat PURE_DATE_FORMAT = FastDateFormat.getInstance(PURE_DATE_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyyMMdd */ public static final DateTimeFormatter PURE_DATE_FORMATTER = createFormatter(PURE_DATE_PATTERN); /** * 标准日期格式:HHmmss */ public static final String PURE_TIME_PATTERN = "HHmmss"; /** * 标准日期格式 {@link FastDateFormat}:HHmmss */ public static final FastDateFormat PURE_TIME_FORMAT = FastDateFormat.getInstance(PURE_TIME_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:HHmmss */ public static final DateTimeFormatter PURE_TIME_FORMATTER = createFormatter(PURE_TIME_PATTERN); /** * 标准日期格式:yyyyMMddHHmmss */ public static final String PURE_DATETIME_PATTERN = "yyyyMMddHHmmss"; /** * 标准日期格式 {@link FastDateFormat}:yyyyMMddHHmmss */ public static final FastDateFormat PURE_DATETIME_FORMAT = FastDateFormat.getInstance(PURE_DATETIME_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyyMMddHHmmss */ public static final DateTimeFormatter PURE_DATETIME_FORMATTER = createFormatter(PURE_DATETIME_PATTERN); /** * 标准日期格式:yyyyMMddHHmmssSSS */ public static final String PURE_DATETIME_MS_PATTERN = "yyyyMMddHHmmssSSS"; /** * 标准日期格式 {@link FastDateFormat}:yyyyMMddHHmmssSSS */ public static final FastDateFormat PURE_DATETIME_MS_FORMAT = FastDateFormat.getInstance(PURE_DATETIME_MS_PATTERN); /** * 标准日期格式 {@link FastDateFormat}:yyyyMMddHHmmssSSS */ public static final DateTimeFormatter PURE_DATETIME_MS_FORMATTER = createFormatter(PURE_DATETIME_MS_PATTERN); //-------------------------------------------------------------------------------------------------------------------------------- Others /** * HTTP头中日期时间格式:EEE, dd MMM yyyy HH:mm:ss z */ public static final String HTTP_DATETIME_PATTERN = "EEE, dd MMM yyyy HH:mm:ss z"; /** * HTTP头中日期时间格式 {@link FastDateFormat}:EEE, dd MMM yyyy HH:mm:ss z */ public static final FastDateFormat HTTP_DATETIME_FORMAT = FastDateFormat.getInstance(HTTP_DATETIME_PATTERN, TimeZone.getTimeZone("GMT"), Locale.US); /** * HTTP头中日期时间格式 {@link FastDateFormat}:EEE, dd MMM yyyy HH:mm:ss z */ public static final FastDateFormat HTTP_DATETIME_FORMAT_Z = FastDateFormat.getInstance(HTTP_DATETIME_PATTERN, Locale.US); /** * JDK中日期时间格式:EEE MMM dd HH:mm:ss zzz yyyy */ public static final String JDK_DATETIME_PATTERN = "EEE MMM dd HH:mm:ss zzz yyyy"; /** * JDK中日期时间格式 {@link FastDateFormat}:EEE MMM dd HH:mm:ss zzz yyyy */ public static final FastDateFormat JDK_DATETIME_FORMAT = FastDateFormat.getInstance(JDK_DATETIME_PATTERN, Locale.US); /** * ISO8601时间:yyyy-MM-dd'T'HH:mm:ss */ public static final String UTC_SIMPLE_PATTERN = "yyyy-MM-dd'T'HH:mm:ss"; /** * ISO8601时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ss */ public static final FastDateFormat UTC_SIMPLE_FORMAT = FastDateFormat.getInstance(UTC_SIMPLE_PATTERN); /** * ISO8601时间:yyyy-MM-dd'T'HH:mm:ss.SSS */ public static final String UTC_SIMPLE_MS_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSS"; /** * ISO8601时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ss.SSS */ public static final FastDateFormat UTC_SIMPLE_MS_FORMAT = FastDateFormat.getInstance(UTC_SIMPLE_MS_PATTERN); /** * UTC时间:yyyy-MM-dd'T'HH:mm:ss'Z' */ public static final String UTC_PATTERN = "yyyy-MM-dd'T'HH:mm:ss'Z'"; /** * UTC时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ss'Z' */ public static final FastDateFormat UTC_FORMAT = FastDateFormat.getInstance(UTC_PATTERN, TimeZone.getTimeZone("UTC")); /** * UTC时间:yyyy-MM-dd'T'HH:mm:ssZ */ public static final String UTC_WITH_ZONE_OFFSET_PATTERN = "yyyy-MM-dd'T'HH:mm:ssZ"; /** * UTC时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ssZ */ public static final FastDateFormat UTC_WITH_ZONE_OFFSET_FORMAT = FastDateFormat.getInstance(UTC_WITH_ZONE_OFFSET_PATTERN, TimeZone.getTimeZone("UTC")); /** * UTC时间:yyyy-MM-dd'T'HH:mm:ssXXX */ public static final String UTC_WITH_XXX_OFFSET_PATTERN = "yyyy-MM-dd'T'HH:mm:ssXXX"; /** * UTC时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ssXXX */ public static final FastDateFormat UTC_WITH_XXX_OFFSET_FORMAT = FastDateFormat.getInstance(UTC_WITH_XXX_OFFSET_PATTERN); /** * UTC时间:yyyy-MM-dd'T'HH:mm:ss.SSS'Z' */ public static final String UTC_MS_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"; /** * UTC时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ss.SSS'Z' */ public static final FastDateFormat UTC_MS_FORMAT = FastDateFormat.getInstance(UTC_MS_PATTERN, TimeZone.getTimeZone("UTC")); /** * UTC时间:yyyy-MM-dd'T'HH:mm:ssZ */ public static final String UTC_MS_WITH_ZONE_OFFSET_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"; /** * UTC时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ssZ */ public static final FastDateFormat UTC_MS_WITH_ZONE_OFFSET_FORMAT = FastDateFormat.getInstance(UTC_MS_WITH_ZONE_OFFSET_PATTERN, TimeZone.getTimeZone("UTC")); /** * UTC时间:yyyy-MM-dd'T'HH:mm:ss.SSSXXX */ public static final String UTC_MS_WITH_XXX_OFFSET_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX"; /** * UTC时间{@link FastDateFormat}:yyyy-MM-dd'T'HH:mm:ss.SSSXXX */ public static final FastDateFormat UTC_MS_WITH_XXX_OFFSET_FORMAT = FastDateFormat.getInstance(UTC_MS_WITH_XXX_OFFSET_PATTERN); /** * 创建并为 {@link DateTimeFormatter} 赋予默认时区和位置信息,默认值为系统默认值。 * * @param pattern 日期格式 * @return {@link DateTimeFormatter} * @since 5.7.5 */ public static DateTimeFormatter createFormatter(String pattern) { return DateTimeFormatter.ofPattern(pattern, Locale.getDefault()) .withZone(ZoneId.systemDefault()); } }




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