Java使用POI导出Excel实现下拉框联动功能

能看懂的看注释，看不懂的直接复制代码用即可。

引入jar包

<dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.14</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.14</version></dependency>

二级联动

package ExcelPoi;import org.apache.poi.ss.usermodel.*;import org.apache.poi.ss.util.CellRangeAddressList;import org.apache.poi.util.IOUtils;import org.apache.poi.xssf.usermodel.*;import java.io.FileOutputStream;import java.util.HashMap;import java.util.Map;public class TwoExport {public static void main(String[] args) {Cascade();}public static void Cascade() {// 创建一个excel@SuppressWarnings("resource")Workbook workbook = new XSSFWorkbook();// 创建需要用户填写的sheetXSSFSheet sheet = (XSSFSheet) workbook.createSheet("省市县");Row row0 = sheet.createRow(0);row0.createCell(0).setCellValue("渠道类型");row0.createCell(1).setCellValue("渠道来源");//得到第一级省名称，放在列表里String[] provinceArr = {"线上", "线下"};String[] cityJiangSu = {"招标网站", "营销自动化ACRM", "门户网络媒体", "移动社交媒体", "移动社交媒体", "搜索引擎", "平面媒体", "户外媒体", "其他"};String[] cityAnHui = {"行业博览会", "行业峰会/论坛/沙龙", "产业级市场活动", "大区/公路港市场活动", "本部门市场活动", "存量客户上下游", "政府关系网络", "个人关系网络", "传化生态业务", "其他"};//将有子区域的父区域放到一个数组中String[] areaFatherNameArr = {"线上", "线下"};Map<String, String[]> areaMap = new HashMap<String, String[]>();areaMap.put("线上", cityJiangSu);areaMap.put("线下", cityAnHui);//创建一个专门用来存放地区信息的隐藏sheet页//因此也不能在现实页之前创建，否则无法隐藏。Sheet hideSheet = workbook.createSheet("area");//这一行作用是将此sheet隐藏，功能未完成时注释此行,可以查看隐藏sheet中信息是否正确workbook.setSheetHidden(workbook.getSheetIndex(hideSheet), true);int rowId = 0;// 设置第一行，存省的信息Row provinceRow = hideSheet.createRow(rowId++);provinceRow.createCell(0).setCellValue("渠道");for (int i = 0; i < provinceArr.length; i++) {Cell provinceCell = provinceRow.createCell(i + 1);provinceCell.setCellValue(provinceArr[i]);}// 将具体的数据写入到每一行中，行开头为父级区域，后面是子区域。for (int i = 0; i < areaFatherNameArr.length; i++) {String key = areaFatherNameArr[i];String[] son = areaMap.get(key);Row row1 = hideSheet.createRow(rowId++);row1.createCell(0).setCellValue(key);for (int j = 0; j < son.length; j++) {Cell cell0 = row1.createCell(j + 1);cell0.setCellValue(son[j]);}// 添加名称管理器String range = getRange(1, rowId, son.length);Name name = workbook.createName();//key不可重复name.setNameName(key);String formula = "area!" + range;name.setRefersToFormula(formula);}XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper((XSSFSheet) sheet);// 省规则DataValidationConstraint provConstraint = dvHelper.createExplicitListConstraint(provinceArr);// 四个参数分别是：起始行、终止行、起始列、终止列CellRangeAddressList provRangeAddressList = new CellRangeAddressList(1, 20, 0, 0);DataValidation provinceDataValidation = dvHelper.createValidation(provConstraint, provRangeAddressList);//验证provinceDataValidation.createErrorBox("error", "请选择正确的渠道");provinceDataValidation.setShowErrorBox(true);provinceDataValidation.setSuppressDropDownArrow(true);sheet.addValidationData(provinceDataValidation);//对前20行设置有效性for (int i = 2; i < 20; i++) {setDataValidation("A", sheet, i, 2);}FileOutputStream os = null;try {os = new FileOutputStream("D:/test01.xlsx");workbook.write(os);} catch (Exception e) {e.printStackTrace();} finally {IOUtils.closeQuietly(os);}}/*** 设置有效性** @param offset 主影响单元格所在列，即此单元格由哪个单元格影响联动* @param sheet* @param rowNum 行数* @param colNum 列数*/public static void setDataValidation(String offset, XSSFSheet sheet, int rowNum, int colNum) {XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper(sheet);DataValidation data_validation_list;data_validation_list = getDataValidationByFormula("INDIRECT($" + offset + (rowNum) + ")", rowNum, colNum, dvHelper);sheet.addValidationData(data_validation_list);}/*** 加载下拉列表内容** @param formulaString* @param naturalRowIndex* @param naturalColumnIndex* @param dvHelper* @return*/private static DataValidation getDataValidationByFormula(String formulaString, int naturalRowIndex, int naturalColumnIndex, XSSFDataValidationHelper dvHelper) {// 加载下拉列表内容// 举例：若formulaString = "INDIRECT($A$2)" 表示规则数据会从名称管理器中获取key与单元格 A2 值相同的数据，//如果A2是江苏省，那么此处就是江苏省下的市信息。XSSFDataValidationConstraint dvConstraint = (XSSFDataValidationConstraint) dvHelper.createFormulaListConstraint(formulaString);// 设置数据有效性加载在哪个单元格上。// 四个参数分别是：起始行、终止行、起始列、终止列int firstRow = naturalRowIndex - 1;int lastRow = naturalRowIndex - 1;int firstCol = naturalColumnIndex - 1;int lastCol = naturalColumnIndex - 1;CellRangeAddressList regions = new CellRangeAddressList(firstRow,lastRow, firstCol, lastCol);// 数据有效性对象// 绑定XSSFDataValidation data_validation_list = (XSSFDataValidation) dvHelper.createValidation(dvConstraint, regions);data_validation_list.setEmptyCellAllowed(false);if (data_validation_list instanceof XSSFDataValidation) {data_validation_list.setSuppressDropDownArrow(true);data_validation_list.setShowErrorBox(true);} else {data_validation_list.setSuppressDropDownArrow(false);}// 设置输入信息提示信息data_validation_list.createPromptBox("下拉选择提示", "请使用下拉方式选择合适的值！");// 设置输入错误提示信息//data_validation_list.createErrorBox("选择错误提示", "你输入的值未在备选列表中，请下拉选择合适的值！");return data_validation_list;}/*** 计算formula** @param offset 偏移量，如果给0，表示从A列开始，1，就是从B列* @param rowId 第几行* @param colCount 一共多少列* @return 如果给入参 1,1,10. 表示从B1-K1。最终返回 $B$1:$K$1*/public static String getRange(int offset, int rowId, int colCount) {char start = (char) ('A' + offset);if (colCount <= 25) {char end = (char) (start + colCount - 1);return "$" + start + "$" + rowId + ":$" + end + "$" + rowId;} else {char endPrefix = 'A';char endSuffix = 'A';if ((colCount - 25) / 26 == 0 || colCount == 51) {// 26-51之间，包括边界（仅两次字母表计算）if ((colCount - 25) % 26 == 0) {// 边界值endSuffix = (char) ('A' + 25);} else {endSuffix = (char) ('A' + (colCount - 25) % 26 - 1);}} else {// 51以上if ((colCount - 25) % 26 == 0) {endSuffix = (char) ('A' + 25);endPrefix = (char) (endPrefix + (colCount - 25) / 26 - 1);} else {endSuffix = (char) ('A' + (colCount - 25) % 26 - 1);endPrefix = (char) (endPrefix + (colCount - 25) / 26);}}return "$" + start + "$" + rowId + ":$" + endPrefix + endSuffix + "$" + rowId;}}}

三级联动

package ExcelPoi;import org.apache.poi.ss.usermodel.*;import org.apache.poi.ss.util.CellRangeAddressList;import org.apache.poi.util.IOUtils;import org.apache.poi.xssf.usermodel.*;import java.io.FileOutputStream;import java.util.HashMap;import java.util.Map;public class ThreeExport {public static void main(String[] args) {Cascade();}public static void Cascade() {// 创建一个excel@SuppressWarnings("resource")Workbook book = new XSSFWorkbook();// 创建需要用户填写的sheetXSSFSheet sheetPro = (XSSFSheet) book.createSheet("省市县");Row row0 = sheetPro.createRow(0);row0.createCell(0).setCellValue("省");row0.createCell(1).setCellValue("市");row0.createCell(2).setCellValue("区");//得到第一级省名称，放在列表里String[] provinceArr = {"江苏省","安徽省"};//依次列出各省的市、各市的县String[] cityJiangSu = {"南京市","苏州市","盐城市"};String[] cityAnHui = {"合肥市","安庆市"};String[] countyNanjing = {"六合县","江宁县"};String[] countySuzhou = {"姑苏区","园区"};String[] countyYancheng = {"响水县","射阳县"};String[] countyLiuhe = {"瑶海区","庐阳区"};String[] countyAnQing = {"迎江区","大观区"};//将有子区域的父区域放到一个数组中String[] areaFatherNameArr ={"江苏省","安徽省","南京市","苏州市","盐城市","合肥市","安庆市"};Map<String,String[]> areaMap = new HashMap<String, String[]>();areaMap.put("江苏省", cityJiangSu);areaMap.put("安徽省",cityAnHui);areaMap.put("南京市",countyNanjing);areaMap.put("苏州市", countySuzhou);areaMap.put("盐城市",countyYancheng);areaMap.put("合肥市",countyYancheng);areaMap.put("合肥市", countyLiuhe);areaMap.put("安庆市",countyAnQing);//创建一个专门用来存放地区信息的隐藏sheet页//因此也不能在现实页之前创建，否则无法隐藏。Sheet hideSheet = book.createSheet("area");//这一行作用是将此sheet隐藏，功能未完成时注释此行,可以查看隐藏sheet中信息是否正确book.setSheetHidden(book.getSheetIndex(hideSheet), true);int rowId = 0;// 设置第一行，存省的信息Row provinceRow = hideSheet.createRow(rowId++);provinceRow.createCell(0).setCellValue("省列表");for(int i = 0; i < provinceArr.length; i ++){Cell provinceCell = provinceRow.createCell(i + 1);provinceCell.setCellValue(provinceArr[i]);}// 将具体的数据写入到每一行中，行开头为父级区域，后面是子区域。for(int i = 0;i < areaFatherNameArr.length;i++){String key = areaFatherNameArr[i];String[] son = areaMap.get(key);Row row = hideSheet.createRow(rowId++);row.createCell(0).setCellValue(key);for(int j = 0; j < son.length; j ++){Cell cell = row.createCell(j + 1);cell.setCellValue(son[j]);}// 添加名称管理器String range = getRange(1, rowId, son.length);Name name = book.createName();//key不可重复name.setNameName(key);String formula = "area!" + range;name.setRefersToFormula(formula);}XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper((XSSFSheet)sheetPro);// 省规则DataValidationConstraint provConstraint = dvHelper.createExplicitListConstraint(provinceArr);// 四个参数分别是：起始行、终止行、起始列、终止列CellRangeAddressList provRangeAddressList = new CellRangeAddressList(1, 20, 0, 0);DataValidation provinceDataValidation = dvHelper.createValidation(provConstraint, provRangeAddressList);//验证provinceDataValidation.createErrorBox("error", "请选择正确的省份");provinceDataValidation.setShowErrorBox(true);provinceDataValidation.setSuppressDropDownArrow(true);sheetPro.addValidationData(provinceDataValidation);//对前20行设置有效性for(int i = 2;i < 22;i++){setDataValidation("A" ,sheetPro,i,2);setDataValidation("B" ,sheetPro,i,3);}FileOutputStream os = null;try {os = new FileOutputStream("D:/test02.xlsx");book.write(os);} catch (Exception e) {e.printStackTrace();} finally {IOUtils.closeQuietly(os);}}/*** 设置有效性* @param offset 主影响单元格所在列，即此单元格由哪个单元格影响联动* @param sheet* @param rowNum 行数* @param colNum 列数*/public static void setDataValidation(String offset,XSSFSheet sheet, int rowNum,int colNum) {XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper(sheet);DataValidation data_validation_list;data_validation_list = getDataValidationByFormula("INDIRECT($" + offset + (rowNum) + ")", rowNum, colNum,dvHelper);sheet.addValidationData(data_validation_list);}/*** 加载下拉列表内容* @param formulaString* @param naturalRowIndex* @param naturalColumnIndex* @param dvHelper* @return*/private static DataValidation getDataValidationByFormula(String formulaString, int naturalRowIndex, int naturalColumnIndex,XSSFDataValidationHelper dvHelper) {// 加载下拉列表内容// 举例：若formulaString = "INDIRECT($A$2)" 表示规则数据会从名称管理器中获取key与单元格 A2 值相同的数据，//如果A2是江苏省，那么此处就是江苏省下的市信息。XSSFDataValidationConstraint dvConstraint = (XSSFDataValidationConstraint) dvHelper.createFormulaListConstraint(formulaString);// 设置数据有效性加载在哪个单元格上。// 四个参数分别是：起始行、终止行、起始列、终止列int firstRow = naturalRowIndex -1;int lastRow = naturalRowIndex - 1;int firstCol = naturalColumnIndex - 1;int lastCol = naturalColumnIndex - 1;CellRangeAddressList regions = new CellRangeAddressList(firstRow,lastRow, firstCol, lastCol);// 数据有效性对象// 绑定XSSFDataValidation data_validation_list = (XSSFDataValidation) dvHelper.createValidation(dvConstraint, regions);data_validation_list.setEmptyCellAllowed(false);if (data_validation_list instanceof XSSFDataValidation) {data_validation_list.setSuppressDropDownArrow(true);data_validation_list.setShowErrorBox(true);} else {data_validation_list.setSuppressDropDownArrow(false);}// 设置输入信息提示信息data_validation_list.createPromptBox("下拉选择提示", "请使用下拉方式选择合适的值！");// 设置输入错误提示信息//data_validation_list.createErrorBox("选择错误提示", "你输入的值未在备选列表中，请下拉选择合适的值！");return data_validation_list;}/*** 计算formula* @param offset 偏移量，如果给0，表示从A列开始，1，就是从B列* @param rowId 第几行* @param colCount 一共多少列* @return 如果给入参 1,1,10. 表示从B1-K1。最终返回 $B$1:$K$1**/public static String getRange(int offset, int rowId, int colCount) {char start = (char)('A' + offset);if (colCount <= 25) {char end = (char)(start + colCount - 1);return "$" + start + "$" + rowId + ":$" + end + "$" + rowId;} else {char endPrefix = 'A';char endSuffix = 'A';if ((colCount - 25) / 26 == 0 || colCount == 51) {// 26-51之间，包括边界（仅两次字母表计算）if ((colCount - 25) % 26 == 0) {// 边界值endSuffix = (char)('A' + 25);} else {endSuffix = (char)('A' + (colCount - 25) % 26 - 1);}} else {// 51以上if ((colCount - 25) % 26 == 0) {endSuffix = (char)('A' + 25);endPrefix = (char)(endPrefix + (colCount - 25) / 26 - 1);} else {endSuffix = (char)('A' + (colCount - 25) % 26 - 1);endPrefix = (char)(endPrefix + (colCount - 25) / 26);}}return "$" + start + "$" + rowId + ":$" + endPrefix + endSuffix + "$" + rowId;}}}