Java 使用POI生成带联动下拉框的excel表格实例代码

废话不多说了，直接给大家贴代码了，具体代码如下所示：

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.datavalidation;
import org.apache.poi.ss.usermodel.name;
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(hssfcellstyle.border_thin);
  cellstyle.setborderleft(hssfcellstyle.border_thin);
  cellstyle.setborderright(hssfcellstyle.border_thin);
  cellstyle.setbordertop(hssfcellstyle.border_thin);
  // 设置背景色
  cellstyle.setfillforegroundcolor(hssfcolor.light_green.index);
  cellstyle.setfillpattern(hssfcellstyle.solid_foreground);
  // 设置居中
  cellstyle.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
  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("f:/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();
 }
}

总结

以上所述是小编给大家介绍的java 使用poi生成带联动下拉框的excel表格，希望对大家有所帮助