[update] 日期时间工具丰富

src/main/java/com/yexuejc/base/util/DateTimeUtil.java

@@ -1,11 +1,13 @@
 package com.yexuejc.base.util;
 
+import java.text.ParseException;
 import java.time.*;
 import java.time.format.DateTimeFormatter;
 import java.time.temporal.TemporalAdjuster;
 import java.time.temporal.TemporalAdjusters;
 import java.util.Date;
 
+
 /**
  * 新版时间日期出来 工具
  *
@@ -258,9 +260,19 @@ public class DateTimeUtil {
      * @return
      */
     public static LocalDateTime parseLocalDateTime13(long timestamp) {
+        return parseLocalDateTime13(timestamp, ZoneId.systemDefault());
+    }
+
+    /**
+     * Long 转 LocalDateTime
+     *
+     * @param timestamp 13位（毫秒）
+     * @param zoneId    时区
+     * @return
+     */
+    public static LocalDateTime parseLocalDateTime13(long timestamp, ZoneId zoneId) {
         Instant instant = Instant.ofEpochMilli(timestamp);
-        ZoneId zone = ZoneId.systemDefault();
-        return LocalDateTime.ofInstant(instant, zone);
+        return LocalDateTime.ofInstant(instant, zoneId);
     }
 
     /**
@@ -270,9 +282,32 @@ public class DateTimeUtil {
      * @return
      */
     public static LocalDateTime parseLocalDateTime10(long timestamp) {
+        return parseLocalDateTime10(timestamp, ZoneId.systemDefault());
+    }
+
+    /**
+     * Long 转 LocalDateTime
+     *
+     * @param timestamp 10位（秒）
+     * @param zoneId    时区
+     * @return
+     */
+    public static LocalDateTime parseLocalDateTime10(long timestamp, ZoneId zoneId) {
         Instant instant = Instant.ofEpochMilli(timestamp * 1000);
-        ZoneId zone = ZoneId.systemDefault();
-        return LocalDateTime.ofInstant(instant, zone);
+        return LocalDateTime.ofInstant(instant, zoneId);
+    }
+
+    /**
+     * UTC（格林威治，标准）时间
+     *
+     * @param timestamp 13位（毫秒）/ 10位（秒）
+     * @return
+     */
+    public static LocalDateTime parserUTC(Long timestamp) {
+        if (String.valueOf(timestamp).length() == 10) {
+            timestamp = timestamp * 1000;
+        }
+        return parseLocalDateTime13(timestamp, ZoneId.of("UTC"));
     }
 
     /**
@@ -299,6 +334,7 @@ public class DateTimeUtil {
         return instant.toEpochMilli();
     }
 
+
     /**
      * 格式化时间 <br/>
      * 格式 yyyy-MM-dd HH:mm:ss
@@ -351,11 +387,57 @@ public class DateTimeUtil {
         return df.format(dateTime);
     }
 
+    /**
+     * 获取UTC（格林威治，标准）时间
+     *
+     * @param date
+     * @return
+     */
+    public static LocalDateTime convertUTC(LocalDateTime date) {
+        return convertTimezone(date, null, "UTC");
+    }
 
-    /** public static void main(String[] args) {
-     SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
-     System.out.println(df.format(zonedDateTime2Date(ZonedDateTime.now())));
-     System.out.println(df2.format(date2ZonedDateTime(new Date())));
+    /**
+     * 时区转换(当前时区)
+     *
+     * @param date   时间
+     * @param zoneId 转换时区
+     * @return
+     */
+    public static LocalDateTime convertTimezone(LocalDateTime date, String zoneId) {
+        return convertTimezone(date, null, zoneId);
+    }
+
+
+    /**
+     * 时区转换
+     *
+     * @param date          时间
+     * @param currentZoneId 当前时间的时区
+     * @param targetZoneId  转换时区
+     * @return
+     */
+    public static LocalDateTime convertTimezone(LocalDateTime date, String currentZoneId, String targetZoneId) {
+        ZoneId currentZone;
+        if (currentZoneId == null) {
+            currentZone = ZoneId.systemDefault();
+        } else {
+            currentZone = ZoneId.of(currentZoneId);
+        }
+        ZoneId targetZone = ZoneId.of(targetZoneId);
+        return date.atZone(currentZone).withZoneSameInstant(targetZone).toLocalDateTime();
+    }
+
+
+    /*public static void main(String[] args) throws ParseException {
+        System.out.println(parserUTC(1684140338161L));
+        System.out.println(convertUTC(LocalDateTime.now()));
+        Date date = DateUtil.str2dateTime("2023-05-15 08:28:05.327");
+        LocalDateTime localDateTime = parseLocalDateTime(date);
+        System.out.println(date);
+        System.out.println(localDateTime);
+        LocalDateTime utc = convertTimezone(localDateTime, "UTC", "Asia/Shanghai");
+        System.out.println(utc);
 
         System.out.println(getWeek4First());
         System.out.println(format(getWeek4First(LocalDate.parse("2018-02-10")).atTime(LocalTime.MIN)));

src/main/java/com/yexuejc/base/util/DateUtil.java

@@ -3,6 +3,7 @@ package com.yexuejc.base.util;
 import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.time.ZoneId;
 import java.util.Calendar;
 import java.util.Date;
 import java.util.Locale;
@@ -191,4 +192,44 @@ public class DateUtil {
         return calendar.getTime();
     }
 
+    /**
+     * 获取UTC（格林威治，标准）时间
+     *
+     * @param date
+     * @return
+     */
+    public static Date convertUTC(Date date) {
+        return convertTimezone(date, null, "UTC");
+    }
+
+    /**
+     * 时区转换(当前时区)
+     *
+     * @param date   时间
+     * @param zoneId 转换时区
+     * @return
+     */
+    public static Date convertTimezone(Date date, String zoneId) {
+        return convertTimezone(date, null, zoneId);
+    }
+
+    /**
+     * 时区转换
+     *
+     * @param date          时间
+     * @param currentZoneId 当前时间的时区
+     * @param targetZoneId  转换时区
+     * @return
+     */
+    public static Date convertTimezone(Date date, String currentZoneId, String targetZoneId) {
+        ZoneId currentZone;
+        if (currentZoneId == null) {
+            currentZone = ZoneId.systemDefault();
+        } else {
+            currentZone = ZoneId.of(currentZoneId);
+        }
+        ZoneId targetZone = ZoneId.of(targetZoneId);
+        return Date.from(date.toInstant().atZone(currentZone).withZoneSameInstant(targetZone).toInstant());
+    }
+
 }