一个作业,要求我们把用Java的POI把一个表的数据导入,并导出成一个新的按格式要求Excel表

作业要求:

 我的代码如下,一个是主类,一个是实体类

我的主类:

package Excel;

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.streaming.SXSSFCell;
import org.apache.poi.xssf.streaming.SXSSFRow;
import org.apache.poi.xssf.streaming.SXSSFSheet;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.*;
import java.util.*;

public class excelHomework2 {
    public static void main(String[] args) throws FileNotFoundException {
        Map<String, List<WorkerInfo>> map = excel(new FileInputStream("D:\\作业.xlsx"));//导入数据
        exportExcel(map, "D:\\杨慧成果.xlsx");//导出数据
    }

    private static Map<String, List<WorkerInfo>> excel(FileInputStream path) {
        Map<String, List<WorkerInfo>> map = new HashMap<>();//map在外面,因为只有一个文件

        try {
            Workbook workbook = new XSSFWorkbook(path);
            int sheetNumber = workbook.getNumberOfSheets();
            for (int i = 0; i < sheetNumber; i++) {
                Sheet sheet = workbook.getSheetAt(i);
                String sheetName = sheet.getSheetName();
                List<WorkerInfo> workerList = new ArrayList<>();//list在里面,因为有多个表

                int firstNumber = sheet.getFirstRowNum() + 2;
                int lastNumber = sheet.getLastRowNum();

                for (int rowNum = firstNumber; rowNum <= lastNumber; rowNum++) {
                    WorkerInfo workerInfo = new WorkerInfo();
                    Row row = sheet.getRow(rowNum);//行

                    Cell cell0 = row.getCell(0);//获取列
//                    System.out.println("序号" + getCellValue(cell0));//获取值
                    workerInfo.setNumber(getCellValue(cell0));

                    Cell cell1 = row.getCell(1);//获取列
//                    System.out.println("姓名" + getCellValue(cell1));//获取值
                    workerInfo.setName(getCellValue(cell1));

                    Cell cell2 = row.getCell(2);//获取列
//                    System.out.println("性别" + getCellValue(cell2));//获取值
                    workerInfo.setSex(getCellValue(cell2));

                    Cell cell3 = row.getCell(3);//获取列
//                    System.out.println("身份证号" + getCellValue(cell3));//获取值
                    workerInfo.setID(getCellValue(cell3));

                    Cell cell4 = row.getCell(4);//获取列
//                    System.out.println("手机号" + getCellValue(cell4));//获取值
                    workerInfo.setPhone(getCellValue(cell4));

                    Cell cell5 = row.getCell(5);//获取列
//                    System.out.println("银行卡号" + getCellValue(cell5));//获取值
                    workerInfo.setBankcard(getCellValue(cell5));

                    Cell cell6 = row.getCell(6);//获取列
//                    System.out.println("开户银行支行" + getCellValue(cell6));//获取值
                    workerInfo.setDepositBank(getCellValue(cell6));

                    Cell cell7 = row.getCell(7);//获取列
//                    System.out.println("岗位" + getCellValue(cell7));//获取值
                    workerInfo.setJob(getCellValue(cell7));

                    Cell cell8 = row.getCell(8);//获取列
//                    System.out.println("参与项目日期" + getCellValue(cell8));//获取值
                    workerInfo.setPartTime(getCellValue(cell8));

                    Cell cell9 = row.getCell(9);//获取列
//                    System.out.println("项目" + getCellValue(cell9));//获取值
                    workerInfo.setProject(getCellValue(cell9));

                    Cell cell10 = row.getCell(10);//获取列
//                    System.out.println("薪酬" + getCellValue(cell10));//获取值
                    workerInfo.setSalary(getCellValue(cell10));

                    workerList.add(workerInfo);

                }
                map.put(sheetName, workerList);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

        return map;
    }


    /**
     * 导出excel
     *
     * @param
     * @param
     */
    private static void exportExcel(Map<String, List<WorkerInfo>> mapOfData, String path) {
        try {
            Workbook wb = new SXSSFWorkbook();

            //标题单元格
            Sheet sheet = wb.createSheet("CRM");
            Row rowTitle1 = sheet.createRow(0);
            Cell titleCell1 = rowTitle1.createCell(0);
            titleCell1.setCellValue("CRM本月工资绩效表");
            for (int i = 0; i < 11; i++) {
                sheet.setColumnWidth(i, 35 * 256);
            }
            rowTitle1.setHeightInPoints(100);
            //标题单元格

            sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 10));
            sheet.addMergedRegion(new CellRangeAddress(1, 1, 9, 10));

            //样式
            CellStyle styleOfnum0 = wb.createCellStyle();
            styleOfnum0.setAlignment(HorizontalAlignment.CENTER);
            styleOfnum0.setVerticalAlignment(VerticalAlignment.CENTER);
            styleOfnum0.setFillForegroundColor(IndexedColors.RED.getIndex());
            styleOfnum0.setFillPattern(FillPatternType.SOLID_FOREGROUND);

            CellStyle styleOfnum1 = wb.createCellStyle();
            styleOfnum1.setAlignment(HorizontalAlignment.CENTER);
            styleOfnum1.setVerticalAlignment(VerticalAlignment.CENTER);
            styleOfnum1.setFillForegroundColor(IndexedColors.GREEN.getIndex());
            styleOfnum1.setFillPattern(FillPatternType.SOLID_FOREGROUND);

            CellStyle styleOfnum2 = wb.createCellStyle();
            styleOfnum2.setAlignment(HorizontalAlignment.CENTER);
            styleOfnum2.setVerticalAlignment(VerticalAlignment.CENTER);
            styleOfnum2.setFillForegroundColor(IndexedColors.YELLOW.getIndex());
            styleOfnum2.setFillPattern(FillPatternType.SOLID_FOREGROUND);

            CellStyle styleOfnum3 = wb.createCellStyle();
            styleOfnum3.setAlignment(HorizontalAlignment.CENTER);
            styleOfnum3.setVerticalAlignment(VerticalAlignment.CENTER);
            styleOfnum3.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
            styleOfnum3.setFillPattern(FillPatternType.SOLID_FOREGROUND);

            CellStyle styleOfnum4 = wb.createCellStyle();
            styleOfnum4.setAlignment(HorizontalAlignment.CENTER);
            styleOfnum4.setVerticalAlignment(VerticalAlignment.CENTER);
            CellStyle cellStyle = wb.createCellStyle();


            cellStyle.setFillForegroundColor(IndexedColors.RED.getIndex());//设置背景颜色
            cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);//设置填充颜色
            cellStyle.setAlignment(HorizontalAlignment.CENTER);//居中
            cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
            //字体
            Font font = wb.createFont();
            font.setBold(true);//是否加粗
            font.setFontName("黑体");
            styleOfnum0.setFont(font);
            styleOfnum1.setFont(font);
            styleOfnum2.setFont(font);
            styleOfnum3.setFont(font);
            styleOfnum4.setFont(font);

            cellStyle.setFont(font);//把字体放在样式中
            titleCell1.setCellStyle(cellStyle);//设置单元格样式
            //字体

            //样式



            String[] title1 = {"项目", "薪资"};
            Row row1 = sheet.createRow(2);
            for (int i = 0; i < title1.length; i++) {
                Cell temcell = row1.createCell(i + 9);
                temcell.setCellValue(title1[i]);
                temcell.setCellStyle(styleOfnum3);
            }
            String[] title = {"序号", "姓名", "性别", "身份证号", "手机号", "银行卡号", "开户银行支行", "岗位", "参与项目日期", "2024年5月"};
            Row row = sheet.createRow(1);
            for (int i = 0; i < title.length; i++) {
                Cell temcell = row.createCell(i);
                temcell.setCellValue(title[i]);
                if (i == 0) {
                    temcell.setCellStyle(styleOfnum0);
                } else if (i == 1) {
                    temcell.setCellStyle(styleOfnum1);
                } else if (i == 2) {
                    temcell.setCellStyle(styleOfnum2);
                } else {
                    temcell.setCellStyle(styleOfnum3);
                }
                if (i <= title.length - 2) {
                    sheet.addMergedRegion(new CellRangeAddress(1, 2, i, i));
                }
            }



            Set<String> set = mapOfData.keySet();
            Double sum = 0.0;
            for (String s : set) {
                List<WorkerInfo> listOfworkers = mapOfData.get(s);
                int i = 3;
                for (WorkerInfo worker : listOfworkers) {
                    Row temrow = sheet.createRow(i++);

                    for (int j = 0; j < 11; j++) {
                        String temvalue = "";
//                            System.out.println("i:" + i + " " + "j：" + j);
                        switch (j) {
                            case 0:
                                temvalue = worker.getNumber();
//                                    System.out.println(worker.getNumber());
                                break;
                            case 1:
                                temvalue = worker.getName();
//                                    System.out.println(worker.getName());
                                break;
                            case 2:
                                temvalue = worker.getSex();
//                                    System.out.println(worker.getSex());

                                break;
                            case 3:
                                temvalue = worker.getID();
//                                    System.out.println(worker.getID());
                                break;
                            case 4:
                                temvalue = worker.getPhone();
//                                    System.out.println(worker.getPhone());
                                break;
                            case 5:
                                temvalue = worker.getBankcard();
                                break;
                            case 6:
                                temvalue = worker.getDepositBank();
                                break;
                            case 7:
                                temvalue = worker.getJob();
                                break;
                            case 8:
                                temvalue = worker.getPartTime();
                                break;
                            case 9:
                                temvalue = worker.getProject();
                                break;
                            case 10:
                                sum += Double.valueOf(worker.getSalary());
                                temvalue = worker.getSalary();
                                break;
                        }

                        Cell temcell = temrow.createCell(j);
                        temcell.setCellValue(temvalue);
//                        System.out.println(temvalue);

                    }

                }
            }


            System.out.println(sheet.getLastRowNum());
            Row addUprow = sheet.createRow(sheet.getLastRowNum() + 1);
            Cell addUpcell = addUprow.createCell(0);
            addUpcell.setCellValue("合计");
            addUprow.setHeightInPoints(50);
            addUpcell.setCellStyle(styleOfnum4);
            sheet.addMergedRegion(new CellRangeAddress(addUpcell.getRowIndex(), addUpcell.getRowIndex(), addUpcell.getColumnIndex(), addUpcell.getColumnIndex() + 9));
            addUprow.createCell(10).setCellValue(sum);

            int last=sheet.getRow(2).getLastCellNum();
            for (int i = 0; i <last ; i++) {
                String s = "";
                int start = 3;
                int end = 3;
                for (int j = 3; j < sheet.getLastRowNum(); j++) {
                    Row temrow = sheet.getRow(j);
                    Cell cell = temrow.getCell(i);
                    if (j == 3) {
                        s = cell.getStringCellValue();
                        System.out.println("第" + i + "列的合并情况如下:");
                        continue;
                    }
                    if (cell.getStringCellValue().equals(s)) {
                        end++;
                    } else {//当遇到不同的数据时(但是如果一直都是相同数据),相同到底的话,这个方法就没用了):如果是在连续相同的情况下,如果是在连续不同的情况下
                        System.out.print("有一个数据不同la!");
                        s = cell.getStringCellValue();
                        if (start != end) {
                            sheet.addMergedRegion(new CellRangeAddress(start, end, cell.getColumnIndex(), cell.getColumnIndex()));
                            end++;
                            start = end;
//                                System.out.print("合并了一个");
//                                System.out.println("start:"+start+"end:"+end);
                        } else {
                            start++;
                            end++;
                        }
                    }
                    System.out.println("end:" + end);
                }
            }

            FileOutputStream fileOutputStream = new FileOutputStream(path);
            wb.write(fileOutputStream);
            fileOutputStream.close();
            wb.close();


        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    private static String getCellValue(Cell cell) {
        String value = "";
        DataFormatter dataFormatter = new DataFormatter();
        if (cell == null) {
            System.out.println("单元格为空");
            return "空";
        }

        value = dataFormatter.formatCellValue(cell);//
        return value;
    }


}

我的实体类:

package Excel;

class WorkerInfo {
    private String Number;
    private String Name;
    private String Sex;
    private String ID;
    private String Phone;
    private String Bankcard;
    private String DepositBank;
    private String Job;
    private String PartTime;
    private String Project;
    private String Salary;

    public WorkerInfo() {
    }

    public WorkerInfo(String number, String name, String sex, String ID, String phone, String bankcard, String depositBank, String job, String partTime, String project, String salary) {
        Number = number;
        Name = name;
        Sex = sex;
        this.ID = ID;
        Phone = phone;
        Bankcard = bankcard;
        DepositBank = depositBank;
        Job = job;
        PartTime = partTime;
        Project = project;
        Salary = salary;
    }

    public String getNumber() {
        return Number;
    }

    public void setNumber(String number) {
        Number = number;
    }

    public String getName() {
        return Name;
    }

    public void setName(String name) {
        Name = name;
    }

    public String getSex() {
        return Sex;
    }

    public void setSex(String sex) {
        Sex = sex;
    }

    public String getID() {
        return ID;
    }

    public void setID(String ID) {
        this.ID = ID;
    }

    public String getPhone() {
        return Phone;
    }

    public void setPhone(String phone) {
        Phone = phone;
    }

    public String getBankcard() {
        return Bankcard;
    }

    public void setBankcard(String bankcard) {
        Bankcard = bankcard;
    }

    public String getDepositBank() {
        return DepositBank;
    }

    public void setDepositBank(String depositBank) {
        DepositBank = depositBank;
    }

    public String getJob() {
        return Job;
    }

    public void setJob(String job) {
        Job = job;
    }

    public String getPartTime() {
        return PartTime;
    }

    public void setPartTime(String partTime) {
        PartTime = partTime;
    }

    public String getProject() {
        return Project;
    }

    public void setProject(String project) {
        Project = project;
    }

    public String getSalary() {
        return Salary;
    }

    public void setSalary(String salary) {
        Salary = salary;
    }
}

我的问题:

其中出现问题的是exportExcel中的代码(如下),这是在遍历每列的每行的单元格,为了让垂直相邻相同的单元格合并:

     int last=sheet.getRow(2).getLastCellNum();
            for (int i = 0; i <last ; i++) {
                String s = "";
                int start = 3;
                int end = 3;
                for (int j = 3; j < sheet.getLastRowNum(); j++) {
                    Row temrow = sheet.getRow(j);
                    Cell cell = temrow.getCell(i);
                    if (j == 3) {
                        s = cell.getStringCellValue();
                        System.out.println("第" + i + "列的合并情况如下:");
                        continue;
                    }
                    if (cell.getStringCellValue().equals(s)) {
                        end++;
                    } else {//当遇到不同的数据时(但是如果一直都是相同数据),相同到底的话,这个方法就没用了):如果是在连续相同的情况下,如果是在连续不同的情况下
                        System.out.print("有一个数据不同la!");
                        s = cell.getStringCellValue();
                        if (start != end) {
                            sheet.addMergedRegion(new CellRangeAddress(start, end, cell.getColumnIndex(), cell.getColumnIndex()));
                            end++;
                            start = end;
//                                System.out.print("合并了一个");
//                                System.out.println("start:"+start+"end:"+end);
                        } else {
                            start++;
                            end++;
                        }
                    }
                    System.out.println("end:" + end);
                }
            }

  正确示例:

我的运行结果:

运行结果(表)如下:

只合并了一部分,没有全合并,例如项目那一列,合并了CRM,SFA,DMS，但是没有合并CS
其他列也是这样，只要需要合并到最后一行，那就无法合并，但是我不知道怎么改代码。。。救救我 
表如下: