String literals in formulas can't be bigger than 255 characters ASCII
我试着新建一个sheet保存国籍，但是显示出的下拉框拉不下来，什么原因!
Row row = null;
Cell cell = null;
for (int i = 0, length= nationality.length; i < length; i++) {
String name = nationality[i];
row = hidden.createRow(i);
cell = row.createCell(0);
cell.setCellValue(name);
}
Name namedCell = wbModule.createName();
namedCell.setNameName("hidden");
namedCell.setRefersToFormula("hidden!A1:A" + (nationality.length));
DVConstraint constraint = DVConstraint.createFormulaListConstraint("hidden");
CellRangeAddressList regions = new CellRangeAddressList(1,endRow, 10, 10);
HSSFDataValidation validation = new HSSFDataValidation(regions, constraint);
// wbModule.setSheetHidden(1, true);
wsheet.addValidationData(validation);