Apache POI -基于两个日期参数导出到Excel

<dependency>
  <groupId>org.apache.poi</groupId>
  <artifactId>poi-ooxml</artifactId>
  <version>5.0.0</version>
</dependency>

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.FileOutputStream;
import java.io.IOException;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.List;

public class ExcelExporter {

    public static void main(String[] args) {
        LocalDate startDate = LocalDate.of(2021, 1, 1);
        LocalDate endDate = LocalDate.of(2021, 1, 10);

        List<String[]> data = getDataBetweenDates(startDate, endDate);

        exportDataToExcel(data, "output.xlsx");
    }

    private static List<String[]> getDataBetweenDates(LocalDate startDate, LocalDate endDate) {
        List<String[]> data = new ArrayList<>();

        // 在此处添加获取数据的逻辑，例如从数据库中查询
        // 这里我们只是简单地生成一些示例数据
        for (LocalDate date = startDate; !date.isAfter(endDate); date = date.plusDays(1)) {
            data.add(new String[]{date.toString(), "Data for " + date});
        }

        return data;
    }

    private static void exportDataToExcel(List<String[]> data, String fileName) {
        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("Data");

        int rowIndex = 0;

        for (String[] rowData : data) {
            Row row = sheet.createRow(rowIndex++);
            int cellIndex = 0;

            for (String cellData : rowData) {
                Cell cell = row.createCell(cellIndex++);
                cell.setCellValue(cellData);
            }
        }

        try (FileOutputStream fileOut = new FileOutputStream(fileName)) {
            workbook.write(fileOut);
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            workbook.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}