要将Java中的LocalDateTime对象转换为yyyyMMdd格式的字符串,你可以按照以下步骤操作: 引入Java中的LocalDateTime类: java import java.time.LocalDateTime; 创建一个LocalDateTime对象: java LocalDateTime now = LocalDateTime.now(); 使用DateTimeFor
at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1949) at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1851) at java.time.LocalDateTime.parse(LocalDateTime.java:492) at com.example.demo.SynchronizedTest.main(SynchronizedTest.java:19) 解析: DateTimeFormatter 这个类...
DateTimeFormatter fmtTime = DateTimeFormatter.ofPattern("yyyy-M-d H:m:s"); String strTime = "2021-6-17 9:15:01"; LocalDateTime dtTime = LocalDateTime.parse(strTime, fmtTime); // As UTC time long nMillUTC = dtTime.toInstant(ZoneOffset.UTC).toEpochMilli(); long nSecondUTC = dtTime....
}publicstaticLocalTimeparseLocalTimeFromString(String value, String pattern){DateTimeFormatterformatter=DateTimeFormatter.ofPattern(pattern);returnLocalTime.parse(value, formatter); }publicstaticLocalDateTimeparseLocalDateTimeFromString(String value, String pattern){DateTimeFormatterformatter=DateTimeFormatter.ofPattern(pat...
在上述代码中,我们首先创建了一个DateTimeFormatter对象,并指定日期时间字符串的格式为"yyyyMMddHHmmss"。然后,我们使用LocalDateTime.parse(dateTimeStr, formatter)方法将字符串解析为LocalDateTime对象。最后,我们使用dateTime.toEpochSecond(java.time.ZoneOffset.UTC)方法将LocalDateTime对象转换为以秒为单位的时间戳。
public class LocalDateTimeUtil { public static final String YYYY = "yyyy"; public static final String YYYYMM = "yyyyMM"; public static final String YYYYMMDD = "yyyyMMdd"; public static final String YYYYMMDDHH = "yyyyMMddHH"; public static final String YYYYMMDDHHMM = "yyyyMMddHHmm"; ...
=DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");String dateTime=LocalDateTime.now(ZoneOffset.of("+8")).format(formatter);//字符串转时间String dateTimeStr="2018-07-28 14:11:15";DateTimeFormatter df=DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");LocalDateTime dateTime=LocalDateTime.parse(dateTime...
LocalDateTime localDateTime2 = LocalDateTime.parse("2019-12-28 23:06:12", dateTimeFormatter); System.out.println("localDateTime2:"+dateTimeFormatter.format(localDateTime2)); 输出:localDateTime2:2019-12-28 23:06:12 (2)DateTimeFormatter.parse
patternMap.put("^\\d{8}$", "yyyyMMdd"); } public static LocalDateTime parse(String text) { for (String key : patternMap.keySet()) { if (Pattern.compile(key).matcher(text).matches()) { DateTimeFormatter formatter = DateTimeFormatter.ofPattern(patternMap.get(key)); ...
importjava.time.ZonedDateTime;importjava.time.format.DateTimeFormatter;ZonedDateTimezonedDateTime=ZonedDateTime.parse(utcDateStr);// 说明:将 UTC 字符串解析为 ZonedDateTime 对象 1. 2. 3. 4. 5. 步骤3: 格式化LocalDateTime对象为YYYYmmdd格式