package com.date.utlit;
import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; /** * 计算任意2个日期内的工作日(没有考虑到国定假日) * @author user * */ public class DateCal {
/** * @param args */ public static void main(String[] args) { try {
String strDateStart = "2006-10-1"; String strDateEnd = "2006-10-14"; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date date_start = sdf.parse(strDateStart); Date date_end = sdf.parse(strDateEnd); DateCal app = new DateCal(); Calendar cal_start = Calendar.getInstance(); Calendar cal_end = Calendar.getInstance(); cal_start.setTime(date_start); cal_end.setTime(date_end); System.out.println("星期-->" + app.getChineseWeek(cal_start) + " 日期-->" + cal_start.get(Calendar.YEAR) + "-" + (cal_start.get(Calendar.MONTH) + 1) + "-" + cal_start.get(Calendar.DAY_OF_MONTH)); System.out.println("星期-->" + app.getChineseWeek(cal_end) + " 日期-->" + cal_end.get(Calendar.YEAR) + "-" + (cal_end.get(Calendar.MONTH) + 1) + "-" + cal_end.get(Calendar.DAY_OF_MONTH)); System.out.println("工作日为-->" + app.getWorkingDay(cal_start, cal_end)); System.out.println("休息日-->"+app.getHolidays(cal_start, cal_end)); } catch (Exception e) { // TODO: handle exception } }
public int getDaysBetween(java.util.Calendar d1, java.util.Calendar d2) { if (d1.after(d2)) { // swap dates so that d1 is start and d2 is end java.util.Calendar swap = d1; d1 = d2; d2 = swap; } int days = d2.get(java.util.Calendar.DAY_OF_YEAR) - d1.get(java.util.Calendar.DAY_OF_YEAR); int y2 = d2.get(java.util.Calendar.YEAR); if (d1.get(java.util.Calendar.YEAR) != y2) { d1 = (java.util.Calendar) d1.clone(); do { days += d1.getActualMaximum(java.util.Calendar.DAY_OF_YEAR); d1.add(java.util.Calendar.YEAR, 1); } while (d1.get(java.util.Calendar.YEAR) != y2); } return days; }
/** * 计算2个日期之间的相隔天数 * @param d1 * @param d2 * @return */ public int getWorkingDay(java.util.Calendar d1, java.util.Calendar d2) { int result = -1; if (d1.after(d2)) { // swap dates so that d1 is start and d2 is end java.util.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; }
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; } /** * * @param d1 * @param d2 * @return */ public int getHolidays(Calendar d1,Calendar d2){ return this.getDaysBetween(d1, d2)-this.getWorkingDay(d1, d2); }
} |