LocalDateTime解析为纪元秒[重复]

Question

我试图解析一个字符串，下面的表单2010-10-12-18-43-55到当前时区自纪元以来的秒。这是我试过的

DateTimeFormatter dateTimeFormatter = 
          DateTimeFormatter.ofPattern("yyyy-MM-dd-HH-mm-ss");

我。

String datatetime = "2010-10-12-18-43-55";
Instant.parse(datetime).toEpochMilli; 
//Throws 
//java.time.format.DateTimeParseException: 
//Text '2010-10-12-18-43-55' could not be parsed at index 10

String datatetime = "2010-10-12-18-43-55";
Instant.from(LocalDateTime.parse(datetime, dateTimeFormatter)).toEpochMilli
//Throws 
//java.time.DateTimeException: Unable to obtain Instant from 
//TemporalAccessor: 2010-10-12T18:43:55 of type 
//java.time.LocalDateTime type java.time.LocalDateTime

String datatetime = "2010-10-12-18-43-55";
Instant.from(dateTimeFormatter.parse(datetime, new ParsePosition(0))).toEpochMilli
//Throws 
//java.time.DateTimeException: Unable to obtain Instant from 
//TemporalAccessor: {},ISO resolved to 2010-10-12T18:43:55 
//of type java.time.format.Parsed

Answer 1

1. 从即时javadocs中，字符串必须采用2007-12-03t10:15:30.00z.
的格式
2. 字符串无法解析为即时，因为缺少时区。尝试以下操作:zoneddatetimezoneddatetime=zonedDateTime.of（localDateTime,zoneid.systemdefault（））；
3. 我不知道你想做什么。