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Dahua ICC Open API SDK for Java
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package com.dahuatech.hutool.core.date;

import com.dahuatech.hutool.core.date.format.FastDateFormat;

import java.util.Locale;
import java.util.TimeZone;

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

  // -------------------------------------------------------------------------------------------------------------------------------- Normal
  /** 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);

  // -------------------------------------------------------------------------------------------------------------------------------- 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：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：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：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);

  // -------------------------------------------------------------------------------------------------------------------------------- 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);

  /** 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);

  /** 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: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"));
}