本示例设置第2列为下拉框（下拉框内容为：是/否），从第5行开始到5657行结束。
关键代码示例：
1 ComboxList = new String[]{"是","否"}; 2 HSSFWorkbook wbook = new HSSFWorkbook(); 3 CellRangeAddressList regions = new CellRangeAddressList(4,5656,colNum,colNum); 4 DVConstraint constraint = DVConstraint.createExplicitListConstraint(ComboxList); 5 HSSFDataValidation data_validation = new HSSFDataValidation(regions,constraint); 6 wbook.getSheetAt(0).addValidationData(data_validation);
导出结果示例：
