java 新特性LocalDate、LocalDateTime与timestamp、Date的转换

1.LocalDate转Date

1. LocalDate nowLocalDate = LocalDate.now();

2. Date date = Date.from(nowLocalDate.atStartOfDay(ZoneId.systemDefault()).toInstant());

2.LocalDateTime转Date

1. LocalDateTime localDateTime = LocalDateTime.now();

2. Date date = Date.from(localDateTime.atZone(ZoneId.systemDefault()).toInstant());

3.Date转LocalDateTime(LocalDate)

1. Date date = new Date();

2. LocalDateTime localDateTime = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();

3. LocalDate localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();

4.LocalDate转时间戳

1. LocalDate localDate = LocalDate.now();

2. long timestamp = localDate.atStartOfDay(ZoneId.systemDefault()).toInstant().toEpochMilli();

5.LocalDateTime转时间戳

1. LocalDateTime localDateTime = LocalDateTime.now();

2. long timestamp = localDateTime.toInstant(ZoneOffset.ofHours(8)).toEpochMilli();

6.时间戳转LocalDateTime(LocalDate)

1. long timestamp = System.currentTimeMillis();

2. LocalDate localDate = Instant.ofEpochMilli(timestamp).atZone(ZoneId.systemDefault()).toLocalDate();

3. LocalDateTime localDateTime = Instant.ofEpochMilli(timestamp).atZone(ZoneId.systemDefa