localdatetime 转 date_datetime.date.today()

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * 日期转换工具类
 *
 * @author Lenovo
 */
public class DateUtil {

    public static LocalDateTime date2LocalDateTime(Date date) {
        Instant instant = date.toInstant();
        return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
    }

    public static LocalDate date2LocalDate(Date date) {
        Instant instant = date.toInstant();
        return LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalDate();
    }

    public static LocalTime date2LocalTime(Date date) {
        Instant instant = date.toInstant();
        return LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalTime();
    }

    public static Date localDateTime2Date(LocalDateTime localDateTime) {
        Instant instant = localDateTime.atZone(ZoneId.systemDefault()).toInstant();
        return Date.from(instant);
    }

    public static Date localDate2Date(LocalDate localDate) {
        Instant instant = localDate.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant();
        return Date.from(instant);
    }

    public static Date localTime2Date(LocalTime localTime) {
        Instant instant = LocalDateTime.of(LocalDate.now(), localTime).atZone(ZoneId.systemDefault()).toInstant();
        return Date.from(instant);
    }

    public static LocalDateTime parseString2LocalDateTime(String str, String pattern) {
        if (pattern == null) {
            DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
            return LocalDateTime.parse(str, df);
        }
        return LocalDateTime.parse(str, DateTimeFormatter.ofPattern(pattern));
    }
    //解析带T的时间字符串
    public static Date parseString2Date(String str) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd\'T\'HH:mm:ss");
        Date date = sdf.parse(str);
        return date;
    }
}