POI导出带级联下拉框的excel

效果：

所需jar包：

poi-3.8-20120326.jar

demo：

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
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.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.DataValidation;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.util.CellRangeAddressList;

public class ExportComboxExcel {
	//信息系统尸体
	class InformationSystem{
		private int id;
		private String name;

		public int getId() {
			return id;
		}
		public void setId(int id) {
			this.id = id;
		}
		public String getName() {
			return name;
		}
		public void setName(String name) {
			this.name = name;
		}
	}

	List systemList = new ArrayList();
	List systemNames = new ArrayList();

	
	private HSSFWorkbook workbook = null; 
	private HSSFCellStyle titleStyle = null; 
	private HSSFCellStyle dataStyle = null;

	/**
	 * 列头样式
	 * @param workbook
	 * @param sheet
	 */
	public void setTitleCellStyles(HSSFWorkbook workbook,HSSFSheet sheet){
		titleStyle = workbook.createCellStyle();

		//设置边框
		titleStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN);
		titleStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);
		titleStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);
		titleStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);
		//设置背景色
		titleStyle.setFillForegroundColor(HSSFColor.LIGHT_GREEN.index);
		titleStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
		//设置居中
		titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
		//设置字体
		HSSFFont font = workbook.createFont();
		font.setFontName("宋体");
		font.setFontHeightInPoints((short) 11); //设置字体大小
		font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//粗体显示
		titleStyle.setFont(font);//选择需要用到的字体格式
		//设置自动换行
		titleStyle.setWrapText(true);
		//设置列宽 ,第一个参数代表列id(从0开始),第2个参数代表宽度值
		sheet.setColumnWidth(0, 3000); 
		sheet.setColumnWidth(1, 12000); 
		sheet.setColumnWidth(2, 15000); 
		sheet.setColumnWidth(3, 7000); 
		sheet.setColumnWidth(4, 7000); 
	}
	/**
	 * 数据样式
	 * @param workbook
	 * @param sheet
	 */
	public void setDataCellStyles(HSSFWorkbook workbook,HSSFSheet sheet){
		dataStyle = workbook.createCellStyle();

		//设置边框
		dataStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN);
		dataStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);
		dataStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);
		dataStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);
		//设置背景色
		dataStyle.setFillForegroundColor(HSSFColor.LIGHT_GREEN.index);
		dataStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
		//设置居中
		dataStyle.setAlignment(HSSFCellStyle.ALIGN_LEFT);
		//设置字体
		HSSFFont font = workbook.createFont();
		font.setFontName("宋体");
		font.setFontHeightInPoints((short) 11); //设置字体大小
		dataStyle.setFont(font);//选择需要用到的字体格式
		//设置自动换行
		dataStyle.setWrapText(true);
	}

	/**
	 * 创建隐藏页和数据域
	 * @param workbook
	 * @param hideSheetName
	 */
	public void creatHideSheet(HSSFWorkbook workbook,String hideSheetName){
		HSSFSheet hideselectinfosheet = workbook.createSheet(hideSheetName);//隐藏一些信息
		//1.查询所有的系统名称，作为Excel的名称管理
		getAllEnableInfoSystemList();
		if(systemList != null && systemList.size() > 0){
			for (InformationSystem sys : systemList) {
				this.systemNames.add(sys.getName().trim() + "_id" + sys.getId());
			}
		}

		if(this.systemNames != null && this.systemNames.size() > 0){
			//系统，在隐藏页设置选择信息
			HSSFRow provinceRow = hideselectinfosheet.createRow(0);
			this.creatRow(provinceRow, this.systemNames);
			//子系统，在隐藏页设置选择信息
			List systemSonNames;
			for (int i = 0; i < this.systemNames.size(); i++) {
				systemSonNames = this.findSon(this.systemNames.get(i).split("_id")[1]);
				systemSonNames.add(0, this.systemNames.get(i));

				HSSFRow zjProvinceRow = hideselectinfosheet.createRow(i+1);
				this.creatRow(zjProvinceRow, systemSonNames);
			}
		}

		//设置隐藏页标志
		workbook.setSheetHidden(workbook.getSheetIndex(hideSheetName), false);
	}

	/**获取所有信息系统数据**/
	private void getAllEnableInfoSystemList() {
		for (int i = 1; i < 11; i++) {
			InformationSystem infoSys = new InformationSystem();
			infoSys.setId(i);
			infoSys.setName("系统");
			systemList.add(infoSys);
		}
	}
	/**
	 * 创建一列数据
	 * @param currentRow
	 * @param textList
	 */
	public void creatRow(HSSFRow currentRow,List textList){
		if(textList!=null&&textList.size()>0){
			int i = 0;
			for(String cellValue : textList){
				HSSFCell userNameLableCell = currentRow.createCell(i++);
				userNameLableCell.setCellValue(cellValue);
			}
		}
	}

	/**
	 * 找到系统下的子系统
	 * @param fatherId
	 * @return
	 */
	private List findSon(String fatherId){
		List sonNames = new ArrayList();
		for (int i = 1; i < 3; i++) {
			sonNames.add("子系统_" + fatherId + i);
		}
		return sonNames;
	}

	/**
	 * 名称管理
	 * @param workbook
	 * @throws FrameworkException 
	 */
	public void creatExcelNameList(HSSFWorkbook workbook){
		if(systemList != null && systemList.size() > 0){
			//名称管理
			Name name;
			name = workbook.createName();
			name.setNameName("sysytemInfo");
			name.setRefersToFormula("hideselectinfosheet!$A$1:$"+this.getcellColumnFlag(systemList.size())+"$1");

			if(this.systemNames != null && this.systemNames.size() > 0){
				//子系统，在隐藏页设置选择信息
				List systemSonNames;
				for (int i = 0; i < this.systemNames.size(); i++) {
					systemSonNames = this.findSon(this.systemNames.get(i).split("id")[1]);
					systemSonNames.add(0, this.systemNames.get(i));

					name = workbook.createName();
					//父级系统
					name.setNameName(this.systemNames.get(i));
					//子系统的范围
					name.setRefersToFormula("hideselectinfosheet!$B$"+(i+2)+":$"+this.getcellColumnFlag(systemSonNames.size())+"$"+(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();
	}
	
	/**
	 * 创建一列应用列头
	 * @param userinfosheet1
	 * @param userName
	 */
	public void creatAppRowHead(HSSFSheet userinfosheet1,int naturalRowIndex){
		HSSFRow row = userinfosheet1.createRow(naturalRowIndex-1);

		//0.序号
		HSSFCell serialNumberCell = row.createCell(0);
		serialNumberCell.setCellValue("序号");
		serialNumberCell.setCellStyle(titleStyle);

		//1.标题
		HSSFCell titleCell = row.createCell(1);
		titleCell.setCellValue("标题");
		titleCell.setCellStyle(titleStyle);

		//2.提出时间
		HSSFCell proposeTimeCell = row.createCell(2);
		proposeTimeCell.setCellValue("提出时间");
		proposeTimeCell.setCellStyle(titleStyle);

		//3.所属信息系统
		HSSFCell systemCell = row.createCell(3);
		systemCell.setCellValue("所属信息系统");
		systemCell.setCellStyle(titleStyle);

		//4.所属分组
		HSSFCell groupCell = row.createCell(4);
		groupCell.setCellValue("所属分组");
		groupCell.setCellStyle(titleStyle);
	}
	
	/**
	 * 创建一列应用数据
	 * @param userinfosheet1
	 * @param userName
	 */
	public void creatAppRow(HSSFSheet userinfosheet1,int num,String titels,int naturalRowIndex){
		//构造一个信息输入表单，用户姓名，出生省份，出生城市
		//要求省份是可以下拉选择的，出生城市根据所选择的省份级联下拉选择
		//在第一行第一个单元格，插入下拉框
		HSSFRow row = userinfosheet1.createRow(naturalRowIndex-1);

		//0.序号
		HSSFCell serialNumberCell = row.createCell(0);
		serialNumberCell.setCellValue(num-1+"");
		serialNumberCell.setCellStyle(dataStyle);

		//1.标题
		HSSFCell titelCell = row.createCell(1);
		titelCell.setCellValue(titels);
		titelCell.setCellStyle(dataStyle);

		//2.提出时间
		HSSFCell proposeTimeCell = row.createCell(2);
		dataStyle.setDataFormat(workbook.createDataFormat().getFormat("yyyy-MM-dd"));
		proposeTimeCell.setCellValue(new SimpleDateFormat("yyyy-MM-dd").format(new Date()).toString());
		proposeTimeCell.setCellStyle(dataStyle);

		//3.所属信息系统
		HSSFCell systemCell = row.createCell(3);
		systemCell.setCellValue("请选择");
		systemCell.setCellStyle(dataStyle);

		//4.所属分组
		HSSFCell groupCell = row.createCell(4);
		groupCell.setCellValue("请选择");
		groupCell.setCellStyle(dataStyle);

		//得到验证对象  
		DataValidation data_validation_list = this.getDataValidationByFormula("sysytemInfo",naturalRowIndex,4); //从1开始下拉框处于第几列
		//工作表添加验证数据  
		userinfosheet1.addValidationData(data_validation_list);
		DataValidation data_validation_list2 = this.getDataValidationByFormula("INDIRECT($D"+naturalRowIndex+")",naturalRowIndex,5);
		//工作表添加验证数据  
		userinfosheet1.addValidationData(data_validation_list2);
	}
	
	/**
	 * 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-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 
		DataValidation data_validation_list = new HSSFDataValidation(regions,constraint);
		return data_validation_list;  
	}

	/**
	 * 生成导出下拉框excel
	 * @param outPathStr 输出路径
	 */
	public ExportComboxExcel(String outPathStr) {
		try {
			workbook = new HSSFWorkbook();//excel文件对象  
			HSSFSheet sheet1 = workbook.createSheet("sheet1");//工作表对象
			//设置列头样式
			this.setTitleCellStyles(workbook,sheet1);
			//设置数据样式
			this.setDataCellStyles(workbook,sheet1);
			//创建一个隐藏页和隐藏数据集
			this.creatHideSheet(workbook, "hideselectinfosheet");
			//设置名称数据集
			this.creatExcelNameList(workbook);
			//创建一行列头数据
			this.creatAppRowHead(sheet1,1);
			//创建一行数据
			for (int i = 2; i < 1001; i++) {
				this.creatAppRow(sheet1, i, "标题......",i);
			}

			//生成输入文件
			FileOutputStream out=new FileOutputStream(outPathStr);  
			workbook.write(out);  
			out.close();
			
			System.out.println("导出成功!");
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		new ExportComboxExcel("d:\\ok.xls");
	}
}