1：获取到的是英文的周

import org.jeecg.common.util.DateUtils;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
	public static void main(String[] args) {
    
    
	        String dateString = "2023-07-06";
	        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
	        LocalDate date = LocalDate.parse(dateString, formatter);
	        DayOfWeek dayOfWeek = date2.getDayOfWeek();
	        String weekdayString = dayOfWeek.toString();
	        System.out.println(weekdayString);
 }

控制台输出

THURSDAY

2：获取到的是中文的周

import org.jeecg.common.util.DateUtils;
import cn.hutool.core.date.DateUtil;
	public static void main(String[] args) {
    
    
	        String dateString="2023-07-06";
	        Date date = DateUtils.str2Date(dateString, DateUtils.date_sdf.get());
	        String weekdayString = DateUtil.dayOfWeekEnum(date).toChinese();
	        System.out.println(weekdayString);
	 }

控制台输出

星期四

3：获取到的是中文的周的数字

import org.jeecg.common.util.DateUtils;
import cn.hutool.core.date.DateUtil;
	public static void main(String[] args) {
    
    
	        String dateString="2023-07-06";
	        Date date = DateUtils.str2Date(dateString, DateUtils.date_sdf.get());
	        Integer weekdayInterger = DateUtil.dayOfWeekEnum(date).getValue();
	        System.out.println(weekdayInterger);
	 }

控制台输出

5

cn.hutool.core.date包下的Week类

public enum Week {
    
    
    SUNDAY(1),
    MONDAY(2),
    TUESDAY(3),
    WEDNESDAY(4),
    THURSDAY(5),
    FRIDAY(6),
    SATURDAY(7);

    private final int value;

    private Week(int value) {
    
    
        this.value = value;
    }

    public int getValue() {
    
    
        return this.value;
    }