我有一个使用 pimefaces 日历组件的表单,现在当用户使用此组件选择他的出生日期时,我想计算他当前的年龄并需要放入一个文本框。当用户选择他的出生日期时,年龄文本框应该会自动显示。
<h:outputLabel for="dobirth" value="Date of Birth (mu)" />
<p:calendar value="#{patient.dob}" id="popupCal">
<p:ajax event="dateSelect" listener="#{patient.handleDateSelect}" />
</p:calendar>
我正在尝试通过这种方式计算年龄。
public void handleDateSelect(DateSelectEvent event) throws ParseException {
System.out.println("inside get age");
FacesContext facesContext = FacesContext.getCurrentInstance();
SimpleDateFormat format = new SimpleDateFormat("d/M/yyyy");
facesContext.addMessage(null,
new FacesMessage(FacesMessage.SEVERITY_INFO, "Date Selected",
format.format(event.getDate())));
String dd=null;
dd=format.format(event.getDate());
System.out.println("date dd"+dd);
Date date = new SimpleDateFormat("MMMM d, yyyy", Locale.ENGLISH).parse(dd);
System.out.println("date+++++++++"+date);
Calendar birth = new GregorianCalendar();
Calendar today = new GregorianCalendar();
int calculatedAge = 0;
int factor = 0;
Date currentDate = new Date(); // current date
System.out.println("DOB" + dob);
birth.setTime(date);
System.out.println("set birth" + birth);
today.setTime(currentDate);
if (today.get(Calendar.DAY_OF_YEAR) < birth.get(Calendar.DAY_OF_YEAR)) {
factor = -1;
}
calculatedAge = today.get(Calendar.YEAR) - birth.get(Calendar.YEAR)
+ factor;
System.out.println("age is " + calculatedAge);
}
一旦用户使用日历选择他的出生,我还需要显示年龄。
一旦我到了年龄,如何在 jsf 2.0 中显示它?