datetime将HTML时间转换为Java时间对象

Question

我从html5输入类型中获取开始时间和结束时间值。我在Servlet中以字符串形式获取它

我想将其转换为Java日期对象，这样我就可以使用诸如before和after之类的方法来比较时间

    String startTimeValue = request.getParameter("startTime");
    String endTimeValue = request.getParameter("endTime");
    SimpleDateFormat sdf = new SimpleDateFormat("hh:mm");
    Date startTime = sdf.parse(startTimeValue);
    Date endTime = sdf.parse(endTimeValue);
    sdf.format(startTime);
    sdf.format(endTime);
    System.out.println(endTime.before(startTime));

任何帮助都将不胜感激

Answer 1

   I think you can do parsing right.
    String DateString = request.getParameter("date");
    //SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
    SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
    Date date = sdf.parse(myDateString);

    Calendar calendar = GregorianCalendar.getInstance(); // creates a new calendar instance
    calendar.setTime(date);   // assigns calendar to given date 
    int hour = calendar.get(Calendar.HOUR);
    int minute; /... similar methods for minutes and seconds

Answer 2

我使用以下代码片段实现它

    String startTimeValue = request.getParameter("startTime");
    String endTimeValue = request.getParameter("endTime");

    String[] time1 = startTimeValue.split(":");
    Date date1 = new Date();
    date1.setHours(Integer.parseInt(time1[0]));
    date1.setMinutes(Integer.parseInt(time1[1]));
    date1.setSeconds(0);
    String[] time2 = endTimeValue.split(":");
    Date date2 = new Date();
    date2.setHours(Integer.parseInt(time2[0]));
    date2.setMinutes(Integer.parseInt(time2[1]));
    date2.setSeconds(0);

    System.out.println(date2.after(date1));