java后台生成带单元格合并的Excel

package com.ding;

import lombok.Data;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;

import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * java利用poi操作excel（包括合并单元格）
 * 本未例引用自：https://blog.csdn.net/datangxiajun/article/details/78308979
 */
public class MergeCellsDemo {
    public static void main( String[] args ) {
        //模拟部分数据
        List<WorkSheetDetail> detail = new ArrayList<WorkSheetDetail>();

        WorkSheetDetail d1 =new WorkSheetDetail("23",23f,43,34,243f,54f,"34");
        WorkSheetDetail d2 =new WorkSheetDetail("23",23f,43,34,243f,54f,"34");
        WorkSheetDetail d3 =new WorkSheetDetail("23",23f,43,34,243f,54f,"34");
        WorkSheetDetail d4 =new WorkSheetDetail("23",23f,43,34,243f,54f,"34");
        WorkSheetDetail d5 =new WorkSheetDetail("23",23f,43,34,243f,54f,"34");
        detail.add(d1);
        detail.add(d2);
        detail.add(d3);
        detail.add(d4);
        detail.add(d5);
        try{
            FileOutputStream fout = new FileOutputStream("E:/students.xls");
            new ExportExcel().getValue(detail, fout);
            fout.close();
        }catch (Exception e) {
            e.printStackTrace();
        }
    }
}

class ExportExcel {
    public void getValue(List<WorkSheetDetail> userList,FileOutputStream fout){
        try{
            //1.创建工作簿
            HSSFWorkbook workbook = new HSSFWorkbook();
            //1.1创建合并单元格对象
            CellRangeAddress callRangeAddress = new CellRangeAddress(0,0,0,7);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress1 = new CellRangeAddress(1,1,0,7);//起始行,结束行,起始列,结束列
            //班组与时间start
            CellRangeAddress callRangeAddress20 = new CellRangeAddress(2,2,0,2);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress21 = new CellRangeAddress(2,2,3,4);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress22 = new CellRangeAddress(2,2,5,7);//起始行,结束行,起始列,结束列
            //班组与时间end

            //标题
            CellRangeAddress callRangeAddress31 = new CellRangeAddress(3,4,0,0);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress32 = new CellRangeAddress(3,4,1,1);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress33 = new CellRangeAddress(3,4,2,2);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress34 = new CellRangeAddress(3,3,3,4);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress35 = new CellRangeAddress(3,4,5,5);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress36 = new CellRangeAddress(3,4,6,6);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddress37 = new CellRangeAddress(3,4,7,7);//起始行,结束行,起始列,结束列

            //金额
            CellRangeAddress callRangeAddressnumber1 = new CellRangeAddress(userList.size()+5,userList.size()+5,0,2);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddressnumber2 = new CellRangeAddress(userList.size()+5,userList.size()+5,3,7);//起始行,结束行,起始列,结束列

            //负责人
            CellRangeAddress callRangeAddressPersion1 = new CellRangeAddress(userList.size()+6,userList.size()+6,0,2);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddressPersion2 = new CellRangeAddress(userList.size()+6,userList.size()+6,3,4);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddressPersion3 = new CellRangeAddress(userList.size()+6,userList.size()+6,5,7);//起始行,结束行,起始列,结束列

            //说明
            CellRangeAddress callRangeAddressinfo = new CellRangeAddress(userList.size()+7,userList.size()+7,0,7);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddressinfo1 = new CellRangeAddress(userList.size()+8,userList.size()+8,0,7);//起始行,结束行,起始列,结束列
            CellRangeAddress callRangeAddressinfo2 = new CellRangeAddress(userList.size()+9,userList.size()+9,0,7);//起始行,结束行,起始列,结束列

            //部项目经理部
            HSSFCellStyle headStyle = createCellStyle(workbook,(short)10,false,true);
            //派工单
            HSSFCellStyle erStyle = createCellStyle(workbook,(short)13,true,true);
            //班组和时间
            HSSFCellStyle sanStyle = createCellStyle(workbook,(short)10,false,false);
            //标题样式
            HSSFCellStyle colStyle = createCellStyle(workbook,(short)10,true,true);
            //内容样式
            HSSFCellStyle cellStyle = createCellStyle(workbook,(short)10,false,true);
            //2.创建工作表
            HSSFSheet sheet = workbook.createSheet("派单");
            //2.1加载合并单元格对象
            sheet.addMergedRegion(callRangeAddress);
            sheet.addMergedRegion(callRangeAddress1);
            sheet.addMergedRegion(callRangeAddress20);
            sheet.addMergedRegion(callRangeAddress21);
            sheet.addMergedRegion(callRangeAddress22);
            sheet.addMergedRegion(callRangeAddress31);
            sheet.addMergedRegion(callRangeAddress32);
            sheet.addMergedRegion(callRangeAddress33);
            sheet.addMergedRegion(callRangeAddress34);
            sheet.addMergedRegion(callRangeAddress35);
            sheet.addMergedRegion(callRangeAddress36);
            sheet.addMergedRegion(callRangeAddress37);
            sheet.addMergedRegion(callRangeAddressnumber1);
            sheet.addMergedRegion(callRangeAddressnumber2);
            sheet.addMergedRegion(callRangeAddressPersion1);
            sheet.addMergedRegion(callRangeAddressPersion2);
            sheet.addMergedRegion(callRangeAddressPersion3);
            sheet.addMergedRegion(callRangeAddressinfo);
            sheet.addMergedRegion(callRangeAddressinfo1);
            sheet.addMergedRegion(callRangeAddressinfo2);
            //设置默认列宽
            sheet.setDefaultColumnWidth(15);
            //3.创建行
            //3.1创建头标题行;并且设置头标题
            HSSFRow row = sheet.createRow(0);
            HSSFCell cell = row.createCell(0);
            //加载单元格样式
            cell.setCellStyle(headStyle);
            cell.setCellValue("xxxx项目部");

            HSSFRow rower = sheet.createRow(1);
            HSSFCell celler = rower.createCell(0);
            //加载单元格样式
            celler.setCellStyle(erStyle);
            celler.setCellValue("派 工 单");

            HSSFRow rowsan = sheet.createRow(2);
            HSSFCell cellsan = rowsan.createCell(0);
            HSSFCell cellsan1 = rowsan.createCell(3);
            HSSFCell cellsan2 = rowsan.createCell(5);
            //加载单元格样式
            cellsan.setCellStyle(sanStyle);
            cellsan.setCellValue("协作单位：x施工一堆");
            cellsan1.setCellStyle(sanStyle);
            cellsan1.setCellValue("");
            cellsan2.setCellStyle(sanStyle);
            cellsan2.setCellValue("时间：2017年 10月 20日");

            //3.2创建列标题;并且设置列标题
            HSSFRow row2 = sheet.createRow(3);
            String[] titles = {"序号","工作内容","用工总人数","工日数","","单价（元）","金额(元）","备注"};//""为占位字符串
            for(int i=0;i<titles.length;i++)
            {
                HSSFCell cell2 = row2.createCell(i);
                //加载单元格样式
                cell2.setCellStyle(colStyle);
                cell2.setCellValue(titles[i]);
            }

            HSSFRow rowfour = sheet.createRow(4);
            String[] titlefour = {"普工用工数","技工用工数"};
            for(int i=0;i<titlefour.length;i++)
            {
                HSSFCell cell2 = rowfour.createCell(i+3);
                //加载单元格样式
                cell2.setCellStyle(colStyle);
                cell2.setCellValue(titlefour[i]);
            }


            //4.操作单元格;将用户列表写入excel
            if(userList != null)
            {
                int i=1;
                for(int j=0;j<userList.size();j++)
                {
                    //创建数据行,前面有两行,头标题行和列标题行
                    HSSFRow row3 = sheet.createRow(j+5);
                    HSSFCell cell0 = row3.createCell(0);
                    cell0.setCellStyle(cellStyle);
                    cell0.setCellValue(i++);

                    HSSFCell cell1 = row3.createCell(1);
                    cell1.setCellStyle(cellStyle);
                    cell1.setCellValue(userList.get(j).getWorkCtx());

                    HSSFCell cell2 = row3.createCell(2);
                    cell2.setCellStyle(cellStyle);
                    cell2.setCellValue(userList.get(j).getTotalHumanDays());

                    HSSFCell cell3 = row3.createCell(3);
                    cell3.setCellStyle(cellStyle);
                    cell3.setCellValue(userList.get(j).getGwnNum());

                    HSSFCell cell4 = row3.createCell(4);
                    cell4.setCellStyle(cellStyle);
                    cell4.setCellValue(userList.get(j).getTmnNum());

                    HSSFCell cell5 = row3.createCell(5);
                    cell5.setCellStyle(cellStyle);
                    cell5.setCellValue(userList.get(j).getTotalHumanDays());

                    HSSFCell cell6 = row3.createCell(6);
                    cell6.setCellStyle(cellStyle);
                    cell6.setCellValue(userList.get(j).getUnitAmount());

                    HSSFCell cell7= row3.createCell(7);
                    cell7.setCellStyle(cellStyle);
                    cell7.setCellValue(userList.get(j).getUnitPrice());
                }
            }

            HSSFRow rownumber = sheet.createRow(userList.size()+5);
            HSSFCell cellnumber = rownumber.createCell(0);
            HSSFCell cellnumber1 = rownumber.createCell(3);
            //加载单元格样式
            cellnumber.setCellStyle(sanStyle);
            cellnumber.setCellValue("金额合计(大写)");
            cellnumber1.setCellStyle(sanStyle);
            cellnumber1.setCellValue("￥ 78 元； 大写：柒拾捌元整");

            HSSFRow rowpersion = sheet.createRow(userList.size()+6);
            HSSFCell cellpersion = rowpersion.createCell(0);
            HSSFCell cellpersion1 = rowpersion.createCell(3);
            HSSFCell cellpersion2 = rowpersion.createCell(5);

            //加载单元格样式
            cellpersion.setCellStyle(sanStyle);
            cellpersion.setCellValue("协作单位负责人：");
            cellpersion1.setCellStyle(sanStyle);
            cellpersion1.setCellValue("经办人：");
            cellpersion2.setCellStyle(sanStyle);
            cellpersion2.setCellValue("部门负责人：");

            HSSFRow rowinfo = sheet.createRow(userList.size()+7);
            HSSFCell cellinfo = rowinfo.createCell(0);
            cellinfo.setCellStyle(sanStyle);
            cellinfo.setCellValue("说明：1、本标工单一式两联，第一联为派工人（工长）存根，第二联用作结算。");

            HSSFRow rowinfo1 = sheet.createRow(userList.size()+8);
            HSSFCell cellinfo1 = rowinfo1.createCell(0);
            cellinfo1.setCellStyle(sanStyle);
            cellinfo1.setCellValue("2、本标工单必须在用工当日签认，否则不予认可；三日内交合同处汇总。");

            HSSFRow rowinfo2 = sheet.createRow(userList.size()+9);
            HSSFCell cellinfo2 = rowinfo2.createCell(0);
            cellinfo2.setCellStyle(sanStyle);
            cellinfo2.setCellValue("3、工日数填写精确到半个工日。");
            //5.输出
            workbook.write(fout);
//              workbook.close();
            //out.close();
        }catch(Exception e)
        {
            e.printStackTrace();
        }
    }
    /**
     *
     * @param workbook
     * @param fontsize
     * @return 单元格样式
     */
    private static HSSFCellStyle createCellStyle(HSSFWorkbook workbook, short fontsize,boolean flag,boolean flag1) {
        // TODO Auto-generated method stub
        HSSFCellStyle style = workbook.createCellStyle();
        //是否水平居中
        if(flag1){
            style.setAlignment(HorizontalAlignment.CENTER);//水平居中
        }

        style.setVerticalAlignment(VerticalAlignment.CENTER);//垂直居中
        //创建字体
        HSSFFont font = workbook.createFont();
        //是否加粗字体
        if(flag){
            font.setBold(true);
        }
        font.setFontHeightInPoints(fontsize);
        //加载字体
        style.setFont(font);
        return style;
    }
}

@Data
class WorkSheetDetail {
    //工作内容
    private String workCtx;
    // 用工人总数    工日数 = gwnNum+tmnNum
    private Float totalHumanDays;
    //普工用工数 1-4小时为半天，4-8小时为一天;120每天
    private Integer gwnNum;
    //技工用工数 1-4小时为半天，4-8小时为一天；160每天
    private Integer tmnNum;
    // 单价（元）
    private Float unitPrice;
    // 金额(元） = gwnNum*120+tmnNum+160
    private Float unitAmount;
    // 备注
    private String notes;

    public WorkSheetDetail(String workCtx, Float totalHumanDays, Integer gwnNum, Integer tmnNum, Float unitPrice,
                           Float unitAmount, String notes) {
        super();
        this.workCtx = workCtx;
        this.totalHumanDays = totalHumanDays;
        this.gwnNum = gwnNum;
        this.tmnNum = tmnNum;
        this.unitPrice = unitPrice;
        this.unitAmount = unitAmount;
        this.notes = notes;
    }
}

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