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Java中Date、LocalDate、LocalDateTime、LocalTime、時(shí)間戳之間的相互轉(zhuǎn)換代碼

更新時(shí)間：2025年04月12日 13:54:33 作者：一個(gè)默默小透明

這篇文章主要介紹了Java中日期時(shí)間轉(zhuǎn)換的多種方法,包括將Date轉(zhuǎn)換為L(zhǎng)ocalDateTime、LocalDate等,以及將時(shí)間戳轉(zhuǎn)換為L(zhǎng)ocalDateTime,文中通過代碼介紹的非常詳細(xì),需要的朋友可以參考下

一、Date轉(zhuǎn)LocalDateTime

    @Test
    public void test06(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // Date
        Date date = new Date();
        System.out.println("Date\t" + sdf.format(date));

        // Date 轉(zhuǎn) LocalDateTime
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime dateToLocalDateTime = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
        System.out.println("Date To LocalDateTime\t" + dtf.format(dateToLocalDateTime));
    }

二、Date轉(zhuǎn)LocalDate

    @Test
    public void test07(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // Date
        Date date = new Date();
        System.out.println("Date\t" + sdf.format(date));

        // Date 轉(zhuǎn) LocalDate
        // 注意 LocalDate 只能有年月日，格式化日期不能有時(shí)分秒，否則會(huì)報(bào)錯(cuò)
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        LocalDate dateToLocalDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
        System.out.println("Date To LocalDate\t" + dtf.format(dateToLocalDate));
    }

三、LocalDateTime轉(zhuǎn)LocalDate

    @Test
    public void test08(){
        // LocalDateTime 轉(zhuǎn) LocalDate
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        LocalDate localDateTimeToLocalDate = LocalDateTime.now().toLocalDate();
        System.out.println("LocalDateTime To LocalDate\t" + dtf.format(localDateTimeToLocalDate));
    }

四、LocalDateTime轉(zhuǎn)LocalTime

    @Test
    public void test09(){
        // LocalDateTime 轉(zhuǎn) LocalTime
        // 注意 LocalTime 只能有時(shí)分秒，格式化日期不能有年月日，否則會(huì)報(bào)錯(cuò)
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("HH:mm:ss");
        LocalTime localDateTimeToLocalTime = LocalDateTime.now().toLocalTime();
        System.out.println("LocalDateTime To LocalTime\t" + dtf.format(localDateTimeToLocalTime));
    }

五、LocalDateTime轉(zhuǎn)Date

    @Test
    public void test10(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // LocalDateTime 轉(zhuǎn) Date
        ZoneId zoneId = ZoneId.systemDefault();
        Date localDateTimeToDate = Date.from(LocalDateTime.now().atZone(zoneId).toInstant());
        System.out.println("LocalDateTime To Date\t" + sdf.format(localDateTimeToDate));
    }

六、LocalDate轉(zhuǎn)Date

    @Test
    public void test11(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // LocalDate 轉(zhuǎn) Date
        Date LocalDateToDate = Date.from(LocalDate.now().atStartOfDay(ZoneId.systemDefault()).toInstant());
        System.out.println("LocalDate To Date\t" + sdf.format(LocalDateToDate));
    }

七、時(shí)間戳轉(zhuǎn)LocalDateTime

    @Test
    public void test12(){
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        // 時(shí)間戳 轉(zhuǎn) LocalDateTime
        Long timestamp = LocalDateTime.now().toInstant(ZoneOffset.of("+8")).toEpochMilli();
        LocalDateTime time2 = LocalDateTime.ofEpochSecond(timestamp/1000,0,ZoneOffset.ofHours(8));
        System.out.println("時(shí)間戳 To LocalDateTime\t" + dtf.format(time2));
    }

總結(jié)

到此這篇關(guān)于Java中Date、LocalDate、LocalDateTime、LocalTime、時(shí)間戳之間的相互轉(zhuǎn)換代碼的文章就介紹到這了,更多相關(guān)Java中日期時(shí)間相互轉(zhuǎn)換內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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