code: protected void validateDate(String field, String errorKey, String errorMessage) {
  		String value = controller.getPara(field);
  		if (StrKit.isBlank(value)) {
  			addError(errorKey, errorMessage);
  			return ;
  		}
  		try {
  			new SimpleDateFormat(getDatePattern()).parse(value.trim());	// Date temp = Date.valueOf(value); 为了兼容 64位 JDK
  		}
  		catch (Exception e) {
  			addError(errorKey, errorMessage);
  		}
  	}
docs: Validate date. Date formate: yyyy-MM-dd