江苏省备案网站,淄博人才网官网首页,网站专题页优化,职业教育专业建设验收网站主要介绍LocalDateTime的格式化字符串与时间戳的相互转换 常见带日期时间格式#xff1a; 字段名字段值api格式DateTimeFormatter.ISO_LOCAL_DATE_TIME字符串patternyyyy-MM-dd’T’HH:mm:ss.SSS’示例2022-06-15T22:06:29.483字符串patternyyyy-MM-dd HH:mm:ss示例2022-06-…主要介绍LocalDateTime的格式化字符串与时间戳的相互转换 常见带日期时间格式 字段名字段值api格式DateTimeFormatter.ISO_LOCAL_DATE_TIME字符串patternyyyy-MM-dd’T’HH:mm:ss.SSS’示例2022-06-15T22:06:29.483字符串patternyyyy-MM-dd HH:mm:ss示例2022-06-15 22:06:29 1. 使用默认格式和默认时区 package com.ysx.utils.datetime;import java.time.Instant; import java.time.LocalDateTime; import java.time.ZoneId; import java.time.format.DateTimeFormatter;/*** LocalDateTime 字符串与时间戳的相互转换** author youngbear* email youngbearaliyun.com* date 2024-07-07 11:38* blog a hrefhttps://blog.csdn.net/next_second.../a* github a hrefhttps://github.com/YoungBear.../a* description*/ public class LocalDateTimeFormatterUtils {/*** 默认时间日期格式字符串* yyyy-MM-dd HH:mm:ss* eg.* 2022-06-15 22:06:29*/private static final DateTimeFormatter DEFAULT_FORMATTER DateTimeFormatter.ofPattern(yyyy-MM-dd HH:mm:ss);/*** 根据时间戳格式化为字符串* 指定格式的时间日期格式* 使用系统默认时区** param timestamp 时间戳 毫秒 如 1655301989483L* return 格式化后的字符串 如 2022-06-15T22:06:29.483*/public static String long2String(long timestamp) {return Instant.ofEpochMilli(timestamp).atZone(ZoneId.systemDefault()).toLocalDateTime().format(DEFAULT_FORMATTER);}/*** 根据字符串解析时间戳* 默认格式的时间日期格式* 默认时区** param dateString 格式化后的字符串 如 2022-06-15T17:06:29.483* return 时间戳 毫秒 如 1655301989483L*/public static long string2long(String dateString) {return LocalDateTime.parse(dateString, DEFAULT_FORMATTER).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();}} 对应单元测试 package com.ysx.utils.datetime;import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Test; import org.mockito.MockedStatic; import org.mockito.Mockito;import java.time.ZoneId; import java.time.format.DateTimeFormatter;import static org.junit.jupiter.api.Assertions.assertEquals;/*** author youngbear* email youngbearaliyun.com* date 2024-07-07 11:55* blog a hrefhttps://blog.csdn.net/next_second.../a* github a hrefhttps://github.com/YoungBear.../a* description unit test for {link LocalDateTimeFormatterUtils}*/ public class LocalDateTimeFormatterUtilsTest {TestDisplayName(根据时间戳格式化为字符串 默认格式 默认时区)public void long2StringTest1() {long timestamp 1655301989483L;ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);try (MockedStaticZoneId mockedZonedId Mockito.mockStatic(ZoneId.class)) {mockedZonedId.when(ZoneId::systemDefault).thenReturn(zoneIdShanghai);assertEquals(2022-06-15 22:06:29, LocalDateTimeFormatterUtils.long2String(timestamp));}}TestDisplayName(根据字符串解析为时间戳 默认格式 默认时区)public void string2longTest1() {ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);try (MockedStaticZoneId mockedZonedId Mockito.mockStatic(ZoneId.class)) {mockedZonedId.when(ZoneId::systemDefault).thenReturn(zoneIdShanghai);assertEquals(1655301989000L, LocalDateTimeFormatterUtils.string2long(2022-06-15 22:06:29));}}} 2. 更多方法(指定格式和指定时区) package com.ysx.utils.datetime;import java.time.Instant; import java.time.LocalDateTime; import java.time.ZoneId; import java.time.format.DateTimeFormatter;/*** LocalDateTime 字符串与时间戳的相互转换** author youngbear* email youngbearaliyun.com* date 2024-07-07 11:38* blog a hrefhttps://blog.csdn.net/next_second.../a* github a hrefhttps://github.com/YoungBear.../a* description*/ public class LocalDateTimeFormatterUtils {/*** 默认时间日期格式字符串* yyyy-MM-dd HH:mm:ss* eg.* 2022-06-15 22:06:29*/private static final DateTimeFormatter DEFAULT_FORMATTER DateTimeFormatter.ofPattern(yyyy-MM-dd HH:mm:ss);/*** 根据时间戳格式化为字符串* 指定格式的时间日期格式* 使用系统默认时区** param timestamp 时间戳 毫秒 如 1655301989483L* return 格式化后的字符串 如 2022-06-15T22:06:29.483*/public static String long2String(long timestamp) {return Instant.ofEpochMilli(timestamp).atZone(ZoneId.systemDefault()).toLocalDateTime().format(DEFAULT_FORMATTER);}/*** 根据时间戳格式化为字符串* 指定格式的时间日期格式* 使用系统默认时区** param timestamp 时间戳 毫秒 如 1655301989483L* param formatter formatter 如 DateTimeFormatter.ISO_LOCAL_DATE_TIME* return 格式化后的字符串 如 2022-06-15T17:06:29.483*/public static String long2String(long timestamp, DateTimeFormatter formatter) {return Instant.ofEpochMilli(timestamp).atZone(ZoneId.systemDefault()).toLocalDateTime().format(formatter);}/*** 根据时间戳格式化为字符串* 默认格式的时间日期格式* 指定时区** param timestamp 时间戳 毫秒 如 1655301989483L* param zoneId 时区信息 如 ZoneId.of(Europe/Moscow)* return 格式化后的字符串 如 2022-06-15T17:06:29.483*/public static String long2String(long timestamp, ZoneId zoneId) {return Instant.ofEpochMilli(timestamp).atZone(zoneId).toLocalDateTime().format(DEFAULT_FORMATTER);}/*** 根据时间戳格式化为字符串* 指定格式的时间日期格式* 指定时区** param timestamp 时间戳 毫秒 如 1655301989483L* param formatter formatter 如 DateTimeFormatter.ISO_LOCAL_DATE_TIME* param zoneId 时区信息 如 ZoneId.of(Europe/Moscow)* return 格式化后的字符串 如 2022-06-15T17:06:29.483*/public static String long2String(long timestamp, DateTimeFormatter formatter, ZoneId zoneId) {return Instant.ofEpochMilli(timestamp).atZone(zoneId).toLocalDateTime().format(formatter);}/*** 根据字符串解析时间戳* 默认格式的时间日期格式* 默认时区** param dateString 格式化后的字符串 如 2022-06-15T17:06:29.483* return 时间戳 毫秒 如 1655301989483L*/public static long string2long(String dateString) {return LocalDateTime.parse(dateString, DEFAULT_FORMATTER).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();}/*** 根据字符串解析时间戳* 指定格式的时间日期格式* 默认时区** param dateString 格式化后的字符串 如 2022-06-15T17:06:29.483* param formatter formatter 如 DateTimeFormatter.ISO_LOCAL_DATE_TIME* return 时间戳 毫秒 如 1655301989483L*/public static long string2long(String dateString, DateTimeFormatter formatter) {return LocalDateTime.parse(dateString, formatter).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();}/*** 根据字符串解析时间戳* 默认格式的时间日期格式* 指定时区** param dateString 格式化后的字符串 如 2022-06-15T17:06:29.483* param zoneId 时区信息 如 ZoneId.of(Europe/Moscow)* return 时间戳 毫秒 如 1655301989483L*/public static long string2long(String dateString, ZoneId zoneId) {return LocalDateTime.parse(dateString, DEFAULT_FORMATTER).atZone(zoneId).toInstant().toEpochMilli();}/*** 根据字符串解析时间戳* 指定格式的时间日期格式* 指定时区** param dateString 格式化后的字符串 如 2022-06-15T17:06:29.483* param formatter formatter 如 DateTimeFormatter.ISO_LOCAL_DATE_TIME* param zoneId 时区信息 如 ZoneId.of(Europe/Moscow)* return 时间戳 毫秒 如 1655301989483L*/public static long string2long(String dateString, DateTimeFormatter formatter, ZoneId zoneId) {return LocalDateTime.parse(dateString, formatter).atZone(zoneId).toInstant().toEpochMilli();}} 对应单元测试 package com.ysx.utils.datetime;import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Test; import org.mockito.MockedStatic; import org.mockito.Mockito;import java.time.ZoneId; import java.time.format.DateTimeFormatter;import static org.junit.jupiter.api.Assertions.assertEquals;/*** author youngbear* email youngbearaliyun.com* date 2024-07-07 11:55* blog a hrefhttps://blog.csdn.net/next_second.../a* github a hrefhttps://github.com/YoungBear.../a* description unit test for {link LocalDateTimeFormatterUtils}*/ public class LocalDateTimeFormatterUtilsTest {TestDisplayName(根据时间戳格式化为字符串 默认格式 默认时区)public void long2StringTest1() {long timestamp 1655301989483L;ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);try (MockedStaticZoneId mockedZonedId Mockito.mockStatic(ZoneId.class)) {mockedZonedId.when(ZoneId::systemDefault).thenReturn(zoneIdShanghai);assertEquals(2022-06-15 22:06:29, LocalDateTimeFormatterUtils.long2String(timestamp));}}TestDisplayName(根据时间戳格式化为字符串 指定格式 默认时区)public void long2StringTest2() {long timestamp 1655301989483L;DateTimeFormatter formatter1 DateTimeFormatter.ISO_LOCAL_DATE_TIME;DateTimeFormatter formatter2 DateTimeFormatter.ofPattern(yyyy-MM-dd HH:mm:ss);ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);try (MockedStaticZoneId mockedZonedId Mockito.mockStatic(ZoneId.class)) {mockedZonedId.when(ZoneId::systemDefault).thenReturn(zoneIdShanghai);assertEquals(2022-06-15T22:06:29.483, LocalDateTimeFormatterUtils.long2String(timestamp, formatter1));assertEquals(2022-06-15 22:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, formatter2));}}TestDisplayName(根据时间戳格式化为字符串 默认格式 指定时区)public void long2StringTest3() {long timestamp 1655301989483L;ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);ZoneId zoneIdMoscow ZoneId.of(Europe/Moscow);ZoneId zoneIdParis ZoneId.of(Europe/Paris);ZoneId zoneIdLos_Angeles ZoneId.of(America/Los_Angeles);assertEquals(2022-06-15 22:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, zoneIdShanghai));assertEquals(2022-06-15 17:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, zoneIdMoscow));assertEquals(2022-06-15 16:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, zoneIdParis));assertEquals(2022-06-15 07:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, zoneIdLos_Angeles));}TestDisplayName(根据时间戳格式化为字符串 指定格式 指定时区)public void long2StringTest4() {long timestamp 1655301989483L;DateTimeFormatter formatter1 DateTimeFormatter.ISO_LOCAL_DATE_TIME;DateTimeFormatter formatter2 DateTimeFormatter.ofPattern(yyyy-MM-dd HH:mm:ss);ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);ZoneId zoneIdMoscow ZoneId.of(Europe/Moscow);ZoneId zoneIdParis ZoneId.of(Europe/Paris);ZoneId zoneIdLos_Angeles ZoneId.of(America/Los_Angeles);assertEquals(2022-06-15T22:06:29.483, LocalDateTimeFormatterUtils.long2String(timestamp, formatter1, zoneIdShanghai));assertEquals(2022-06-15T17:06:29.483, LocalDateTimeFormatterUtils.long2String(timestamp, formatter1, zoneIdMoscow));assertEquals(2022-06-15T16:06:29.483, LocalDateTimeFormatterUtils.long2String(timestamp, formatter1, zoneIdParis));assertEquals(2022-06-15T07:06:29.483, LocalDateTimeFormatterUtils.long2String(timestamp, formatter1, zoneIdLos_Angeles));assertEquals(2022-06-15 22:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, formatter2, zoneIdShanghai));assertEquals(2022-06-15 17:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, formatter2, zoneIdMoscow));assertEquals(2022-06-15 16:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, formatter2, zoneIdParis));assertEquals(2022-06-15 07:06:29, LocalDateTimeFormatterUtils.long2String(timestamp, formatter2, zoneIdLos_Angeles));}TestDisplayName(根据字符串解析为时间戳 默认格式 默认时区)public void string2longTest1() {ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);try (MockedStaticZoneId mockedZonedId Mockito.mockStatic(ZoneId.class)) {mockedZonedId.when(ZoneId::systemDefault).thenReturn(zoneIdShanghai);assertEquals(1655301989000L, LocalDateTimeFormatterUtils.string2long(2022-06-15 22:06:29));}}TestDisplayName(根据字符串解析为时间戳 指定格式 默认时区)public void string2longTest2() {DateTimeFormatter formatter1 DateTimeFormatter.ISO_LOCAL_DATE_TIME;DateTimeFormatter formatter2 DateTimeFormatter.ofPattern(yyyy-MM-dd HH:mm:ss);ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);long timestamp1 1655301989483L;long timestamp2 1655301989000L;String dateStringShanghai1 2022-06-15T22:06:29.483;String dateStringShanghai2 2022-06-15 22:06:29;try (MockedStaticZoneId mockedZonedId Mockito.mockStatic(ZoneId.class)) {mockedZonedId.when(ZoneId::systemDefault).thenReturn(zoneIdShanghai);assertEquals(timestamp1, LocalDateTimeFormatterUtils.string2long(dateStringShanghai1, formatter1));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringShanghai2, formatter2));}}TestDisplayName(根据字符串解析为时间戳 默认格式 指定时区)public void string2longTest3() {ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);ZoneId zoneIdMoscow ZoneId.of(Europe/Moscow);ZoneId zoneIdParis ZoneId.of(Europe/Paris);ZoneId zoneIdLos_Angeles ZoneId.of(America/Los_Angeles);String dateStringShanghai2 2022-06-15 22:06:29;String dateStringMoscow2 2022-06-15 17:06:29;String dateStringParis2 2022-06-15 16:06:29;String dateStringLos_Angeles2 2022-06-15 07:06:29;long timestamp2 1655301989000L;assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringShanghai2, zoneIdShanghai));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringMoscow2, zoneIdMoscow));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringParis2, zoneIdParis));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringLos_Angeles2, zoneIdLos_Angeles));}TestDisplayName(根据字符串解析为时间戳 指定格式 指定时区)public void string2longTest4() {DateTimeFormatter formatter1 DateTimeFormatter.ISO_LOCAL_DATE_TIME;DateTimeFormatter formatter2 DateTimeFormatter.ofPattern(yyyy-MM-dd HH:mm:ss);ZoneId zoneIdShanghai ZoneId.of(Asia/Shanghai);ZoneId zoneIdMoscow ZoneId.of(Europe/Moscow);ZoneId zoneIdParis ZoneId.of(Europe/Paris);ZoneId zoneIdLos_Angeles ZoneId.of(America/Los_Angeles);String dateStringShanghai1 2022-06-15T22:06:29.483;String dateStringMoscow1 2022-06-15T17:06:29.483;String dateStringParis1 2022-06-15T16:06:29.483;String dateStringLos_Angeles1 2022-06-15T07:06:29.483;String dateStringShanghai2 2022-06-15 22:06:29;String dateStringMoscow2 2022-06-15 17:06:29;String dateStringParis2 2022-06-15 16:06:29;String dateStringLos_Angeles2 2022-06-15 07:06:29;long timestamp1 1655301989483L;long timestamp2 1655301989000L;assertEquals(timestamp1, LocalDateTimeFormatterUtils.string2long(dateStringShanghai1, formatter1, zoneIdShanghai));assertEquals(timestamp1, LocalDateTimeFormatterUtils.string2long(dateStringMoscow1, formatter1, zoneIdMoscow));assertEquals(timestamp1, LocalDateTimeFormatterUtils.string2long(dateStringParis1, formatter1, zoneIdParis));assertEquals(timestamp1, LocalDateTimeFormatterUtils.string2long(dateStringLos_Angeles1, formatter1, zoneIdLos_Angeles));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringShanghai2, formatter2, zoneIdShanghai));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringMoscow2, formatter2, zoneIdMoscow));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringParis2, formatter2, zoneIdParis));assertEquals(timestamp2, LocalDateTimeFormatterUtils.string2long(dateStringLos_Angeles2, formatter2, zoneIdLos_Angeles));} } 源码地址-github 源码地址-gitee 更多文章