poi 实现下拉框级联选择省市

import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.hssf.usermodel.DVConstraint;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDataValidation;
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.ss.usermodel.DataValidation;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.util.CellRangeAddressList;

/**
* POI操作excel级联选择省市
* @author liubenlong
*
*/
public class CascadeComboBox {

public static void main(String [] args) throws IOException {
HSSFWorkbook workbook = new HSSFWorkbook();//excel文件对象
HSSFSheet userinfosheet1 = workbook.createSheet();//工作表对象
//创建一个隐藏sheet
CascadeComboBox.createHideSheet(workbook, "dictionary");
//设置名称数据集
CascadeComboBox.creatExcelNameList(workbook);
//创建一行数据
CascadeComboBox.creatAppRow(userinfosheet1, "许果",1);
CascadeComboBox.creatAppRow(userinfosheet1, "刘德华",2);
CascadeComboBox.creatAppRow(userinfosheet1, "刘本龙",3);

//生成输入文件
FileOutputStream out=new FileOutputStream("d:/success.xls");
workbook.write(out);
out.close();
}

/**
* 名称管理
* @param workbook
*/
public static void creatExcelNameList(HSSFWorkbook workbook){
Name name = workbook.createName();
name.setNameName("province");
name.setRefersToFormula("dictionary!$A$1:$E$1");

name = workbook.createName();
name.setNameName("浙江");
name.setRefersToFormula("dictionary!$B$2:$K$2");

name = workbook.createName();
name.setNameName("山东");
name.setRefersToFormula("dictionary!$B$3:$I$3");

name = workbook.createName();
name.setNameName("江西");
name.setRefersToFormula("dictionary!$B$4:$E$4");

name = workbook.createName();
name.setNameName("江苏");
name.setRefersToFormula("dictionary!$B$5:$I$5");

name = workbook.createName();
name.setNameName("四川");
name.setRefersToFormula("dictionary!$B$6:$K$6");
}

/**
* 创建隐藏sheet保存用于选择的数据字典信息
* @param workbook
* @param hideSheetName
*/
public static void createHideSheet(HSSFWorkbook workbook,String hideSheetName){
HSSFSheet dictionary = workbook.createSheet(hideSheetName);//隐藏一些信息
//设置下拉列表的内容
String[] provinceList = {"浙江","山东","江西","江苏","四川"};
String[] zjProvinceList = {"浙江","杭州","宁波","温州","台州","绍兴","金华","湖州","丽水","衢州","舟山"};
String[] sdProvinceList = {"山东","济南","青岛","烟台","东营","菏泽","淄博","济宁","威海"};
String[] jxProvinceList = {"江西","南昌","新余","鹰潭","抚州"};
String[] jsProvinceList = {"江苏","南京","苏州","无锡","常州","南通","泰州","连云港","徐州"};
String[] scProvinceList = {"四川","成都","绵阳","自贡","泸州","宜宾","攀枝花","广安","达州","广元","遂宁"};
//在隐藏页设置选择信息
HSSFRow provinceRow = dictionary.createRow(0);
CascadeComboBox.creatRow(provinceRow, provinceList);
HSSFRow zjProvinceRow = dictionary.createRow(1);
CascadeComboBox.creatRow(zjProvinceRow, zjProvinceList);
HSSFRow sdProvinceRow = dictionary.createRow(2);
CascadeComboBox.creatRow(sdProvinceRow, sdProvinceList);
HSSFRow jxProvinceRow = dictionary.createRow(3);
CascadeComboBox.creatRow(jxProvinceRow, jxProvinceList);
HSSFRow jsProvinceRow = dictionary.createRow(4);
CascadeComboBox.creatRow(jsProvinceRow, jsProvinceList);
HSSFRow scProvinceRow = dictionary.createRow(5);
CascadeComboBox.creatRow(scProvinceRow, scProvinceList);
//设置隐藏页标志
workbook.setSheetHidden(workbook.getSheetIndex(hideSheetName), true);
}

/**
* 创建一列应用数据
* @param userinfosheet1
* @param userName
*/
public static void creatAppRow(HSSFSheet sheet,String userName,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 = sheet.createRow(naturalRowIndex-1);
HSSFCell provinceLableCell = row.createCell(0);
provinceLableCell.setCellValue("省份:");
HSSFCell provinceCell = row.createCell(1);
provinceCell.setCellValue("请选择");
HSSFCell cityLableCell = row.createCell(2);
cityLableCell.setCellValue("城市:");
HSSFCell cityCell = row.createCell(3);
cityCell.setCellValue("请选择");

//得到验证对象
DataValidation validation = CascadeComboBox.getDataValidationByFormula("province",naturalRowIndex,2);
//工作表添加验证数据
sheet.addValidationData(validation);

/*
* 网上很多资料都是错的 。这里INDIRECT($B1)	D后面必须是1，excel会自动处理
*/
validation = CascadeComboBox.getDataValidationByFormula("INDIRECT($B1)",naturalRowIndex,4);
//工作表添加验证数据
sheet.addValidationData(validation);
}

/**
* 创建一列数据
* @param currentRow
* @param textList
*/
public static void creatRow(HSSFRow currentRow,String[] textList){
if(textList!=null&&textList.length>0){
int i = 0;
for(String cellValue : textList){
HSSFCell cell = currentRow.createCell(i++);
cell.setCellValue(cellValue);
}
}
}

/**
* 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 static DataValidation getDataValidationByFormula(String formulaString,int naturalRowIndex,int naturalColumnIndex){
//创建公式约束（数据有效性）
DVConstraint constraint = DVConstraint.createFormulaListConstraint(formulaString);

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 validation = new HSSFDataValidation(regions,constraint);
return validation;
}
}