import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/**
* 工作日计算工具类
* @author ThinkGem
*/
public class WorkDayUtils {
/**
* 获取日期之间的天数
* @param d1
* @param d2
* @return
*/
public int getDaysBetween(Calendar d1, Calendar d2) {
if (d1.after(d2)) { // swap dates so that d1 is start and d2 is end
Calendar swap = d1;
d1 = d2;
d2 = swap;
}
int days = d2.get(Calendar.DAY_OF_YEAR)
- d1.get(Calendar.DAY_OF_YEAR);
int y2 = d2.get(Calendar.YEAR);
if (d1.get(Calendar.YEAR) != y2) {
d1 = (Calendar) d1.clone();
do {
days += d1.getActualMaximum(Calendar.DAY_OF_YEAR);
d1.add(Calendar.YEAR, 1);
} while (d1.get(Calendar.YEAR) != y2);
}
return days;
}
/**
* 获取工作日
* @param d1
* @param d2
* @return
*/
public int getWorkingDay(Calendar d1, Calendar d2) {
int result = -1;
if (d1.after(d2)) { // swap dates so that d1 is start and d2 is end
Calendar swap = d1;
d1 = d2;
d2 = swap;
}
// int betweendays = getDaysBetween(d1, d2);
// int charge_date = 0;
int charge_start_date = 0;// 开始日期的日期偏移量
int charge_end_date = 0;// 结束日期的日期偏移量
// 日期不在同一个日期内
int stmp;
int etmp;
stmp = 7 - d1.get(Calendar.DAY_OF_WEEK);
etmp = 7 - d2.get(Calendar.DAY_OF_WEEK);
if (stmp != 0 && stmp != 6) {// 开始日期为星期六和星期日时偏移量为0
charge_start_date = stmp - 1;
}
if (etmp != 0 && etmp != 6) {// 结束日期为星期六和星期日时偏移量为0
charge_end_date = etmp - 1;
}
// }
result = (getDaysBetween(this.getNextMonday(d1), this.getNextMonday(d2)) / 7)
* 5 + charge_start_date - charge_end_date;
// System.out.println("charge_start_date>" + charge_start_date);
// System.out.println("charge_end_date>" + charge_end_date);
// System.out.println("between day is-->" + betweendays);
return result;
}
/**
* 获取中文日期
* @param date
* @return
*/
public String getChineseWeek(Calendar date) {
final String dayNames[] = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
int dayOfWeek = date.get(Calendar.DAY_OF_WEEK);
// System.out.println(dayNames[dayOfWeek - 1]);
return dayNames[dayOfWeek - 1];
}
/**
* 获得日期的下一个星期一的日期
* @param date
* @return
*/
public Calendar getNextMonday(Calendar date) {
Calendar result = null;
result = date;
do {
result = (Calendar) result.clone();
result.add(Calendar.DATE, 1);
} while (result.get(Calendar.DAY_OF_WEEK) != 2);
return result;
}
/**
* 获取休息日
* @param d1
* @param d2
* @return
*/
public int getHolidays(Calendar d1, Calendar d2) {
return this.getDaysBetween(d1, d2) - this.getWorkingDay(d1, d2);
}
public static void main(String[] args) {
try {
String strDateStart = "2013-08-01";
String strDateEnd = "2014-08-31";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date_start = sdf.parse(strDateStart);
Date date_end = sdf.parse(strDateEnd);
WorkDayUtils app = new WorkDayUtils();
Calendar cal_start = Calendar.getInstance();
Calendar cal_end = Calendar.getInstance();
cal_start.setTime(date_start);
cal_end.setTime(date_end);
System.out.println("开始日:" + cal_start.get(Calendar.YEAR) + "-" + (cal_start.get(Calendar.MONTH) + 1)
+ "-" + cal_start.get(Calendar.DAY_OF_MONTH) + " " + app.getChineseWeek(cal_start));
System.out.println("结束日:" + cal_end.get(Calendar.YEAR) + "-" + (cal_end.get(Calendar.MONTH) + 1)
+ "-" + cal_end.get(Calendar.DAY_OF_MONTH) + " " + app.getChineseWeek(cal_end));
System.out.println("工作日:" + app.getWorkingDay(cal_start, cal_end));
System.out.println("休息日:" + app.getHolidays(cal_start, cal_end));
} catch (Exception e) {
e.printStackTrace();
}
}
}
工作日计算工具类
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转载自blog.csdn.net/qq_31451081/article/details/81220314
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