java hssfworkbook 读取excel

可以使用以下代码来读取 Excel 文件：

import java.io.FileInputStream;
import java.io.IOException;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;

public class ReadExcelFile {

    public static void main(String[] args) {
        try {
            FileInputStream file = new FileInputStream("excelFile.xls");

            // Create Workbook instance holding reference to .xls file
            HSSFWorkbook workbook = new HSSFWorkbook(file);

            // Get first/desired sheet from the workbook
            Sheet sheet = workbook.getSheetAt(0);

            // Iterate through each rows one by one
            for (Row row : sheet) {
                // Iterate through each cells one by one
                for (Cell cell : row) {
                    // Check the cell type and format accordingly
                    switch (cell.getCellType()) {
                        case Cell.CELL_TYPE_NUMERIC:
                            System.out.print(cell.getNumericCellValue() + " ");
                            break;
                        case Cell.CELL_TYPE_STRING:
                            System.out.print(cell.getStringCellValue() + " ");
                            break;
                    }
                }
                System.out.println();
            }
            file.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

这个示例代码使用了 Apache POI 库来读取 Excel 文件。请确保将 `excelFile.xls` 替换为您想要读取的实际文件名。