import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Date;

import java.util.List;

/**

* 节假日工作时间处理

* 假日只处理今年、去年的 1.1、5.1、10.1，和周末

*/

public class HolidayUtil {

private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

private static SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

private static List holidays = new ArrayList();

/**

* 静态块初始化法定节日

*/

static {

Calendar c = Calendar.getInstance();

holidays.add(c.get(Calendar.YEAR)-1 + "-01-01");

holidays.add(c.get(Calendar.YEAR)-1 + "-05-01");

holidays.add(c.get(Calendar.YEAR)-1 + "-10-01");

holidays.add(c.get(Calendar.YEAR) + "-01-01");

holidays.add(c.get(Calendar.YEAR) + "-05-01");

holidays.add(c.get(Calendar.YEAR) + "-10-01");

}

/**

* 判断当天是否是节假日 节日只包含1.1；5.1；10.1

*

* @param date 时间

* @return 非工作时间：true;工作时间：false

*/

public static boolean isHolidayOrFestival(Date date) {

boolean result = false;

boolean isHolidayTmp = isHoliday(date);

if (isHolidayTmp) {

result = true;

} else {

Calendar c = Calendar.getInstance();

c.setTime(date);

//周末直接为非工作时间

if (c.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY || c.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY) {

result = true;

} else {//周内9点到17:30为工作时间

int hour = c.get(Calendar.HOUR_OF_DAY);

int minute = c.get(Calendar.MINUTE);

if (hour < 9 || (hour == 17 && minute > 30) || hour >= 18) {

result = true;

}

}

}

return result;

}

/**

* 非工作时间获取最近的工作时间

* @param date 时间

* @return 返回处理后时间，格式：yyyy-MM-dd HH:mm:ss

*/

public static String getPreWorkDay(Date date) {

Calendar c = Calendar.getInstance();

c.setTime(date);

if (!isHolidayOrFestival(date)) {

return datechange(date, "yyyy-MM-dd HH:mm:ss");

}

//如果是周日最近的工作日为周五，日期减去2

if (c.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY) {

c.add(Calendar.DAY_OF_MONTH, -2);

}

//如果是周六最近的工作日为周五，日期减去1

else if (c.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY) {

c.add(Calendar.DAY_OF_MONTH, -1);

}

//如果是周一，并且为早上9点之前，最近的工作日为周五，日期减去3

else if (c.get(Calendar.DAY_OF_WEEK) == Calendar.MONDAY) {

int hour = c.get(Calendar.HOUR_OF_DAY);

if (hour < 9) {

c.add(Calendar.DAY_OF_MONTH, -3);

}

}else{

int hour = c.get(Calendar.HOUR_OF_DAY);

if (hour < 9) {

c.add(Calendar.DAY_OF_MONTH, -1);

}

}

c.set(Calendar.HOUR_OF_DAY, 17);

c.set(Calendar.MINUTE, 30);

c.set(Calendar.SECOND, 0);

return datechange(c.getTime(), "yyyy-MM-dd HH:mm:ss");

}

public static String datechange(Date date, String pattern) {

SimpleDateFormat sdf = new SimpleDateFormat(pattern);

String demo = sdf.format(date);

return demo;

}

/**

* 根据判断当前时间是否是节日

*

* @param date

* 时间

* @return

*/

private static boolean isHoliday(Date date) {

boolean result = false;

String dateStr = sdf.format(date);

if (holidays.size() > 0) {

for (String holiday : holidays) {

if (holiday.equals(dateStr)) {

result = true;

break;

}

}

}

return result;

}

public static void main(String[] args) throws ParseException {

String d = "2017-07-20 18:31:58";

System.out.println(getPreWorkDay(sdf1.parse(d)));

}

}