wannianli.txt

最简单的java万年历实现

HttpSession session = request.getSession();
		//获取从页面传递过来的日期
		String time = request.getParameter("time");
		if (time == "") {
			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
			time = sdf.format(new Date());
		}
		//截取年数
		int year = Integer.parseInt(time.substring(0,4));
		//截取月份
		int month = Integer.parseInt(time.substring(5,7))-1;
		//截取日期
		int today = Integer.parseInt(time.substring(8));
		//构造日历对象
		GregorianCalendar calendar = new GregorianCalendar(year,month,today);
		//将日历对象设置为这个月的第一天，并获得这一天为星期几。
		calendar.set(Calendar.DAY_OF_MONTH, 1);
		int weekday = calendar.get(Calendar.DAY_OF_WEEK);
		Vector vectorday = new Vector();
		for (int i = Calendar.MONDAY; i < weekday; i++) {
			vectorday.add("&nbsp;");
		}
		session.setAttribute("today", today);
		session.setAttribute("year", year);
		session.setAttribute("month", month+1);
		do {
			int day = calendar.get(Calendar.DAY_OF_MONTH);
			vectorday.add(day);
			calendar.add(Calendar.DAY_OF_MONTH, 1);
		} while (calendar.get(Calendar.MONTH) == month);
		session.setAttribute("vectorday", vectorday);
		response.sendRedirect("../index.jsp");