Timestamp转 LocalDateTime

在Java中，可以使用`Timestamp`类和`LocalDateTime`类相互转换。下面是一个示例代码：

import java.sql.Timestamp;
import java.time.LocalDateTime;

public class TimestampToLocalDateTimeExample {
    public static void main(String[] args) {
        // 将Timestamp转换为LocalDateTime
        Timestamp timestamp = new Timestamp(System.currentTimeMillis());
        LocalDateTime localDateTime = timestamp.toLocalDateTime();
        System.out.println("Timestamp: " + timestamp);
        System.out.println("LocalDateTime: " + localDateTime);

        // 将LocalDateTime转换为Timestamp
        LocalDateTime localDateTime2 = LocalDateTime.now();
        Timestamp timestamp2 = Timestamp.valueOf(localDateTime2);
        System.out.println("LocalDateTime: " + localDateTime2);
        System.out.println("Timestamp: " + timestamp2);
    }
}

输出结果：

Timestamp: 2021-01-01 12:34:56.789
LocalDateTime: 2021-01-01T12:34:56.789
LocalDateTime: 2021-01-01T12:34:56.789
Timestamp: 2021-01-01 12:34:56.789