java8 localdate 使用

import org.junit.Test;

import java.time.DayOfWeek;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.temporal.WeekFields;
import java.util.Date;

public class LocalDateTimeTest {

    @Test
    public void test001()throws Exception{
        //获取秒数
        Long second = LocalDateTime.now().toEpochSecond(ZoneOffset.of("+8"));
        //获取毫秒数
        Long milliSecond = LocalDateTime.now().toInstant(ZoneOffset.of("+8")).toEpochMilli();
    }

    public static LocalDateTime dateConvertToLocalDateTime(Date date) {
        return date.toInstant().atOffset(ZoneOffset.of("+8")).toLocalDateTime();
    }

    public static Date localDateTimeConvertToDate(LocalDateTime localDateTime) {
        return Date.from(localDateTime.toInstant(ZoneOffset.of("+8")));
    }

    public void preWeek(){
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime localDateTime = now.minusDays(7);
        LocalDateTime monday = localDateTime.with(DayOfWeek.MONDAY);
        LocalDateTime sunday = localDateTime.with(DayOfWeek.SUNDAY);
        System.out.println("--------------------");
        System.out.println(monday);
        System.out.println(sunday);
    }


}