业务开发中,若要求获取下一个工作日或上一个工作日,则可使用以下Java类。
package com.cmit.kapok.system.utils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.time.DayOfWeek; import java.time.LocalDateTime; import java.time.format.DateTimeFormatter; import java.util.ArrayList; import java.util.List; /** * @Title: 计算时间周期之间工作日的时间 * #Description: CalcWorkDaysUtil * #Date: 2022/6/2 14:42 */ public class CalcWorkDaysUtil { private Logger logger = LoggerFactory.getLogger(CalcWorkDaysUtil.class); // 定义2个List用于存储特殊的工作日和非工作日 // 特别的工作日(周六,周日上班的日期集合) private static List<String> SPECIAL_WORK_DAYS = new ArrayList<>(); // 特别的休息日(周一到周五休息的日期集合) private static List<String> SPECIAL_OFF_DAYS = new ArrayList<>(); // 在这里我就使用静态将2022年所有的节假日存到相应的list中 // 大多是都是从数据库中获取的(这里就这样演示,大家后期可以从数据库获取) static { // 特殊的工作日(周六、周日上班的日期集合) SPECIAL_WORK_DAYS.add("2022-01-29"); SPECIAL_WORK_DAYS.add("2022-01-30"); SPECIAL_WORK_DAYS.add("2022-04-02"); SPECIAL_WORK_DAYS.add("2022-04-24"); SPECIAL_WORK_DAYS.add("2022-05-07"); SPECIAL_WORK_DAYS.add("2022-10-08"); SPECIAL_WORK_DAYS.add("2022-10-09"); // 特殊的休息日(周一到周五休息的日期集合) SPECIAL_OFF_DAYS.add("2022-01-01"); SPECIAL_OFF_DAYS.add("2022-01-02"); SPECIAL_OFF_DAYS.add("2022-01-03"); SPECIAL_OFF_DAYS.add("2022-01-31"); SPECIAL_OFF_DAYS.add("2022-02-01"); SPECIAL_OFF_DAYS.add("2022-02-02"); SPECIAL_OFF_DAYS.add("2022-02-03"); SPECIAL_OFF_DAYS.add("2022-02-04"); SPECIAL_OFF_DAYS.add("2022-02-05"); SPECIAL_OFF_DAYS.add("2022-02-06"); SPECIAL_OFF_DAYS.add("2022-04-03"); SPECIAL_OFF_DAYS.add("2022-04-04"); SPECIAL_OFF_DAYS.add("2022-04-05"); SPECIAL_OFF_DAYS.add("2022-04-30"); SPECIAL_OFF_DAYS.add("2022-05-01"); SPECIAL_OFF_DAYS.add("2022-05-02"); SPECIAL_OFF_DAYS.add("2022-05-03"); SPECIAL_OFF_DAYS.add("2022-05-04"); SPECIAL_OFF_DAYS.add("2022-06-03"); SPECIAL_OFF_DAYS.add("2022-06-04"); SPECIAL_OFF_DAYS.add("2022-06-05"); SPECIAL_OFF_DAYS.add("2022-09-10"); SPECIAL_OFF_DAYS.add("2022-09-11"); SPECIAL_OFF_DAYS.add("2022-09-12"); SPECIAL_OFF_DAYS.add("2022-10-01"); SPECIAL_OFF_DAYS.add("2022-10-01"); SPECIAL_OFF_DAYS.add("2022-10-02"); SPECIAL_OFF_DAYS.add("2022-10-03"); SPECIAL_OFF_DAYS.add("2022-10-04"); SPECIAL_OFF_DAYS.add("2022-10-05"); SPECIAL_OFF_DAYS.add("2022-10-06"); SPECIAL_OFF_DAYS.add("2022-10-07"); } // 日期格式化方法(非线程安全的,可根据情况在方法内使用,或使用DateTimeFormatter) private static DateTimeFormatter SDF = DateTimeFormatter.ofPattern("yyyy-MM-dd"); private static DateTimeFormatter SDFS = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); public static LocalDateTime nextWorkDay(LocalDateTime dateTime){ LocalDateTime modifiedDate = dateTime.plusDays(1); DayOfWeek week = modifiedDate.getDayOfWeek(); String dateStr = modifiedDate.format(SDF); //如果是周末,但是是特别工作日 if((week.equals(DayOfWeek.SATURDAY) || week.equals(DayOfWeek.SUNDAY)) && SPECIAL_WORK_DAYS.contains(dateStr)){ return modifiedDate; }else if(!week.equals(DayOfWeek.SATURDAY) && !week.equals(DayOfWeek.SUNDAY) && !SPECIAL_OFF_DAYS.contains(dateStr)){ return modifiedDate; }else{ return nextWorkDay(modifiedDate); } } public static LocalDateTime nextWorkDay(LocalDateTime dateTime,Integer num){ if(num<1){ return dateTime; } while(num>0){ dateTime = nextWorkDay(dateTime); num--; } return dateTime ; } public static LocalDateTime lastWorkDay(LocalDateTime dateTime){ LocalDateTime modifiedDate = dateTime.minusDays(1); DayOfWeek week = modifiedDate.getDayOfWeek(); String dateStr = modifiedDate.format(SDF); //如果是周末,但是是特别工作日 if((week.equals(DayOfWeek.SATURDAY) || week.equals(DayOfWeek.SUNDAY)) && SPECIAL_WORK_DAYS.contains(dateStr)){ return modifiedDate; }else if(!week.equals(DayOfWeek.SATURDAY) && !week.equals(DayOfWeek.SUNDAY) && !SPECIAL_OFF_DAYS.contains(dateStr)){ return modifiedDate; }else{ return lastWorkDay(modifiedDate); } } public static LocalDateTime lastWorkDay(LocalDateTime dateTime,Integer num){ if(num<1){ return dateTime; } while(num>0){ dateTime = lastWorkDay(dateTime); num--; } return dateTime ; } public static void main(String[] args) { LocalDateTime input = LocalDateTime.of(2022,11,28,12,12); LocalDateTime dateTime = lastWorkDay(input); System.out.println(dateTime); } }
标签:Java,计算,DAYS,dateTime,add,2022,OFF,SPECIAL,工作日 From: https://www.cnblogs.com/luoyihao/p/16968462.html