59 lines
1.7 KiB
Java
59 lines
1.7 KiB
Java
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package com.cdzy.common.utils;
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import java.time.*;
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import java.time.format.DateTimeFormatter;
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/**
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* 数据类型转换工具类
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*
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* @author dingchao
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* @date 2025/3/24
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* @modified by:
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*/
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public class ConvertUtil {
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/**
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* 时间戳转日期
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*
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* @param timestamp 时间戳
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* @return 日期
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*/
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public static LocalDateTime timestampToDate(long timestamp) {
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return LocalDateTime.ofEpochSecond(timestamp, 0, java.time.ZoneOffset.ofHours(8));
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}
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/**
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* Instant转日期
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*
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* @param instant 时间戳
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* @return 日期
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*/
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public static LocalDateTime instantToDatetime(Instant instant) {
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return instant.atZone(ZoneId.of("+8")).toLocalDateTime();
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}
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/**
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* 将 LocalDateTime 转换为 UTC。
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*
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* @param localDateTime 要转换的 LocalDateTime 对象
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* @return UTC时间字符串，格式为 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
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*/
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public static String localDateTimeToUTC(LocalDateTime localDateTime) {
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ZonedDateTime localZoned = localDateTime.atZone(ZoneId.of("+8"));
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// 转换为 UTC 时区（自动减8小时）
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ZonedDateTime utcZoned = localZoned.withZoneSameInstant(ZoneOffset.UTC);
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// 定义格式化器，包含毫秒和时区标识'Z'
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DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSX");
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// 格式化时间
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return utcZoned.format(formatter);
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}
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//public static void main(String[] args) {
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// LocalDateTime localDateTime = LocalDateTime.now();
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// String utcTime = localDateTimeToUTC(localDateTime);
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// System.out.println("UTC 时间: " + utcTime);
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//}
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}
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