Excel转PDF工具类

import com.aspose.cells.License;
import com.aspose.cells.PdfSaveOptions;
import com.aspose.cells.Workbook;

import java.io.FileOutputStream;
import java.io.InputStream;


public class ExcelUtil {

    /**
     * excel 转 pdf
     *
     * @param excelFilePath excel文件路径
     */
    public static void excel2pdf(String excelFilePath) {
        excel2pdf(excelFilePath, null, null);
    }

    /**
     * excel 转 pdf
     *
     * @param excelFilePath excel文件路径
     * @param convertSheets 需要转换的sheet
     */
    public static void excel2pdf(String excelFilePath, int[] convertSheets) {
        excel2pdf(excelFilePath, null, convertSheets);
    }

    /**
     * excel 转 pdf
     *
     * @param excelFilePath excel文件路径
     * @param pdfFilePath   pdf文件路径
     */
    public static void excel2pdf(String excelFilePath, String pdfFilePath) {
        excel2pdf(excelFilePath, pdfFilePath, null);
    }

    /**
     * excel 转 pdf
     *
     * @param excelFilePath excel文件路径
     * @param pdfFilePath   pdf文件路径
     * @param convertSheets 需要转换的sheet
     */
    public static void excel2pdf(String excelFilePath, String pdfFilePath, int[] convertSheets) {
        try {
            pdfFilePath = pdfFilePath == null ? getPdfFilePath(excelFilePath) : pdfFilePath;
            // 验证 License
            getLicense();
            Workbook wb = new Workbook(excelFilePath);
            FileOutputStream fileOS = new FileOutputStream(pdfFilePath);
            PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();
            pdfSaveOptions.setOnePagePerSheet(true);
            if (null != convertSheets) {
                printSheetPage(wb, convertSheets);
            }
            wb.save(fileOS, pdfSaveOptions);
            fileOS.flush();
            fileOS.close();
            System.out.println("convert success");
        } catch (Exception e) {
            System.out.println("convert failed");
            e.printStackTrace();
        }
    }

    /**
     * 获取生成的 pdf 文件路径，默认与源文件同一目录
     *
     * @param excelFilePath excel文件路径
     * @return 生成的 pdf 文件路径
     */
    public static String getPdfFilePath(String excelFilePath) {
        if (excelFilePath == null || excelFilePath.isEmpty()) {
            throw new IllegalArgumentException("Excel file path cannot be null or empty");
        }
        int dotIndex = excelFilePath.lastIndexOf('.');
        if (dotIndex > 0) {
            return excelFilePath.substring(0, dotIndex) + ".pdf";
        }
        // 如果文件路径中没有扩展名，直接追加 .pdf
        return excelFilePath + ".pdf";
    }


    /**
     * 获取 license 去除水印
     * 若不验证则转化出的pdf文档会有水印产生
     */
    public static void getLicense() {
        String licenseFilePath = "excel-license.xml";
        try {
            InputStream is = ExcelUtil.class.getClassLoader().getResourceAsStream(licenseFilePath);
            License license = new License();
            license.setLicense(is);
        } catch (Exception e) {
            System.out.println("license verify failed");
            e.printStackTrace();
        }
    }

    /**
     * 隐藏workbook中不需要的sheet页。
     *
     * @param sheets 显示页的sheet数组
     */
    public static void printSheetPage(Workbook wb, int[] sheets) {
        for (int i = 1; i < wb.getWorksheets().getCount(); i++) {
            wb.getWorksheets().get(i).setVisible(false);
        }
        if (null == sheets || sheets.length == 0) {
            wb.getWorksheets().get(0).setVisible(true);
        } else {
            for (int i = 0; i < sheets.length; i++) {
                wb.getWorksheets().get(i).setVisible(true);
            }
        }
    }
}