Java 使用POI生成带联动下拉框(入门级exccel操作示例)

import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.ArrayList;import java.util.Arrays;import java.util.List;import org.apache.poi.hssf.usermodel.DVConstraint;import org.apache.poi.hssf.usermodel.HSSFCell;import org.apache.poi.hssf.usermodel.HSSFCellStyle;import org.apache.poi.hssf.usermodel.HSSFDataFormat;import org.apache.poi.hssf.usermodel.HSSFDataValidation;import org.apache.poi.hssf.usermodel.HSSFFont;import org.apache.poi.hssf.usermodel.HSSFRow;import org.apache.poi.hssf.usermodel.HSSFSheet;import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.apache.poi.hssf.util.HSSFColor;import org.apache.poi.ss.usermodel.*;import org.apache.poi.ss.util.CellRangeAddressList;public class ExcelLinkage { // 样式 private HSSFCellStyle cellStyle; // 初始化省份数据 private List<String> province = new ArrayList<String>(Arrays.asList("湖南", "广东")); // 初始化数据（湖南的市区） private List<String> hnCity = new ArrayList<String>(Arrays.asList("长沙市", "邵阳市")); // 初始化数据（广东市区） private List<String> gdCity = new ArrayList<String>(Arrays.asList("深圳市", "广州市")); public void setDataCellStyles(HSSFWorkbook workbook, HSSFSheet sheet) { cellStyle = workbook.createCellStyle(); // 设置边框 cellStyle.setBorderBottom(BorderStyle.THIN); cellStyle.setBorderLeft(BorderStyle.THIN); cellStyle.setBorderRight( BorderStyle.THIN); cellStyle.setBorderTop( BorderStyle.THIN); // 设置背景色 cellStyle.setFillForegroundColor(HSSFColor.LIGHT_GREEN.index); cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND); // 设置居中 cellStyle.setAlignment(HorizontalAlignment.LEFT); // 设置字体 HSSFFont font = workbook.createFont(); font.setFontName("宋体"); font.setFontHeightInPoints((short) 11); // 设置字体大小 cellStyle.setFont(font);// 选择需要用到的字体格式 // 设置单元格格式为文本格式（这里还可以设置成其他格式,可以自行百度） HSSFDataFormat format = workbook.createDataFormat(); cellStyle.setDataFormat(format.getFormat("@")); } /** * 创建数据域（下拉联动的数据） * * @param workbook * @param hideSheetName * 数据域名称 */ private void creatHideSheet(HSSFWorkbook workbook, String hideSheetName) { // 创建数据域 HSSFSheet sheet = workbook.createSheet(hideSheetName); // 用于记录行 int rowRecord = 0; // 获取行（从0下标开始） HSSFRow provinceRow = sheet.createRow(rowRecord); // 创建省份数据 this.creatRow(provinceRow, province); // 根据省份插入对应的市信息 rowRecord ; for (int i = 0; i < province.size(); i ) { List<String> list = new ArrayList<String>(); // 我这里是写死的 ， 实际中应该从数据库直接获取更好 if (province.get(i).toString().equals("湖南")) { // 将省份名称放在插入市的第一列， 这个在后面的名称管理中需要用到 list.add(0, province.get(i).toString()); list.addAll(hnCity); } else { list.add(0, province.get(i).toString()); list.addAll(gdCity); } //获取行 HSSFRow Cityrow = sheet.createRow(rowRecord); // 创建省份数据 this.creatRow(Cityrow, list); rowRecord ; } } /** * 创建一列数据 * * @param currentRow * @param textList */ public void creatRow(HSSFRow currentRow, List<String> text) { if (text != null) { int i = 0; for (String cellValue : text) { // 注意列是从（1）下标开始 HSSFCell userNameLableCell = currentRow.createCell(i ); userNameLableCell.setCellValue(cellValue); } } } /** * 名称管理 * * @param workbook * @param hideSheetName * 数据域的sheet名 */ private void creatExcelNameList(HSSFWorkbook workbook, String hideSheetName) { Name name; name = workbook.createName(); // 设置省名称 name.setNameName("province"); name.setRefersToFormula(hideSheetName "!$A$1:$" this.getcellColumnFlag(province.size()) "$1"); // 设置省下面的市 for (int i = 0; i < province.size(); i ) { List<String> num = new ArrayList<String>(); if (province.get(i).toString().equals("湖南")) { name = workbook.createName(); num.add(0,province.get(i).toString()); num.addAll(hnCity); name.setNameName(province.get(i).toString()); name.setRefersToFormula(hideSheetName "!$B$" (i 2) ":$" this.getcellColumnFlag(num.size()) "$" (i 2)); } else { name = workbook.createName(); num.add(0,province.get(i).toString()); num.addAll(gdCity); name.setNameName(province.get(i).toString()); name.setRefersToFormula(hideSheetName "!$B$" (i 2) ":$" this.getcellColumnFlag(num.size()) "$" (i 2)); } } } // 根据数据值确定单元格位置（比如：28-AB） private String getcellColumnFlag(int num) { String columFiled = ""; int chuNum = 0; int yuNum = 0; if (num >= 1 && num <= 26) { columFiled = this.doHandle(num); } else { chuNum = num / 26; yuNum = num % 26; columFiled = this.doHandle(chuNum); columFiled = this.doHandle(yuNum); } return columFiled; } private String doHandle(final int num) { String[] charArr = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" }; return charArr[num - 1].toString(); } /** * 使用已定义的数据源方式设置一个数据验证 * * @param formulaString * @param naturalRowIndex * @param naturalColumnIndex * @return */ public DataValidation getDataValidationByFormula(String formulaString, int naturalRowIndex, int naturalColumnIndex) { // 加载下拉列表内容 DVConstraint constraint = DVConstraint .createFormulaListConstraint(formulaString); // 设置数据有效性加载在哪个单元格上。 // 四个参数分别是：起始行、终止行、起始列、终止列 int firstRow = naturalRowIndex; int lastRow = naturalRowIndex; int firstCol = naturalColumnIndex - 1; int lastCol = naturalColumnIndex - 1; CellRangeAddressList regions = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol); // 数据有效性对象 DataValidation data_validation_list = new HSSFDataValidation(regions, constraint); return data_validation_list; } /** * 创建一列数据 * * @param hssfSheet */ public void creatAppRow(HSSFSheet hssfSheet, int naturalRowIndex) { // 获取行 HSSFRow hssfRow = hssfSheet.createRow(naturalRowIndex); HSSFCell province = hssfRow.createCell(0); province.setCellValue(""); province.setCellStyle(cellStyle); HSSFCell City = hssfRow.createCell(1); City.setCellValue(""); City.setCellStyle(cellStyle); // 得到验证对象 DataValidation data_validation_list1 = this.getDataValidationByFormula( "province", naturalRowIndex, 1); DataValidation data_validation_list2 = this .getDataValidationByFormula("INDIRECT($A" (naturalRowIndex 1) ")", naturalRowIndex, 2); // 工作表添加验证数据 hssfSheet.addValidationData(data_validation_list1); hssfSheet.addValidationData(data_validation_list2); } public void Export() { try { File file = new File("d:/excel.xls"); FileOutputStream outputStream = new FileOutputStream(file); // 创建excel HSSFWorkbook workbook = new HSSFWorkbook(); // 设置sheet 名称 HSSFSheet excelSheet = workbook.createSheet("excel"); // 设置样式 this.setDataCellStyles(workbook, excelSheet); // 创建一个隐藏页和隐藏数据集 this.creatHideSheet(workbook, "shutDataSource"); // 设置名称数据集 this.creatExcelNameList(workbook, "shutDataSource"); // 创建一行数据 for (int i = 0; i < 50; i ) { this.creatAppRow(excelSheet,i); } workbook.write(outputStream); outputStream.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public static void main(String[] args) { ExcelLinkage linkage = new ExcelLinkage(); linkage.Export(); }}