Poi导出Excel模版设置单元格为下拉框格式

Posted 2022-11-28 默慊$

日常开发中，导出基础数据为模版，填充信息后导入时，有时候会要求某些导入项应该为下拉框选择，一个是为了规范数据，也可以简化填充，下面上代码：

public static void setColumnToDropDownBoxFormat(XSSFSheet sheet, String[] dataList, int firstCol, int endCol) throws Exception 
        XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper(sheet);
        XSSFDataValidationConstraint dvConstraint = (XSSFDataValidationConstraint) dvHelper
                .createExplicitListConstraint(dataList);
        CellRangeAddressList addressList = null;
        XSSFDataValidation validation = null;
        for (int i = 0; i < 500; i++) 
            addressList = new CellRangeAddressList(i, i, firstCol, endCol);
            validation = (XSSFDataValidation) dvHelper.createValidation(
                    dvConstraint, addressList);
            sheet.addValidationData(validation);
        
    

导出前调用就可以了！