code: public Integer[] getParaValuesToInt(String name) {
  		String[] values = request.getParameterValues(name);
  		if (values == null || values.length == 0) {
  			return null;
  		}
  		Integer[] result = new Integer[values.length];
  		for (int i=0; i<result.length; i++) {
  			result[i] = StrKit.isBlank(values[i]) ? null : Integer.parseInt(values[i]);
  		}
  		return result;
  	}
docs: Returns an array of Integer objects containing all of the values the given request
  parameter has, or null if the parameter does not exist. If the parameter has a
  single value, the array has a length of 1.
  @param name a String containing the name of the parameter whose value is requested
  @return an array of Integer objects containing the parameter's values