要导出合并单元格的内容，你可以使用Apache POI库来读取合并单元格的范围，并获取合并区域的左上角单元格的内容。以下是导出合并单元格内容的示例代码：

```java import org.apache.poi.ss.usermodel.*;

import java.io.FileInputStream; import java.io.IOException;

public class MergeCellExportExample {     public static void main(String[] args) {         String filePath = "path_to_your_excel_file.xlsx";         String sheetName = "Sheet1";

        try (FileInputStream fileInputStream = new FileInputStream(filePath);              Workbook workbook = WorkbookFactory.create(fileInputStream)) {

            Sheet sheet = workbook.getSheet(sheetName);             int lastRowNum = sheet.getLastRowNum();             int lastColNum = sheet.getRow(0).getLastCellNum();

            for (int rowIdx = 0; rowIdx