java itext excelToPdf

以下是使用iText将Excel转换为PDF的Java代码示例：

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

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfDocument;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.codec.TiffImage;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelToPdfConverter {

    public static void main(String[] args) throws IOException, DocumentException {
        String excelFilePath = "input.xlsx";
        String pdfFilePath = "output.pdf";
        Workbook workbook = getWorkbook(excelFilePath);
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(pdfFilePath));
        // 将Excel中的每个工作表转换为PDF页面
        for (int i = 0; i < workbook.getNumberOfSheets(); i++) {
            TiffImage tiff = TiffImage.getTiffImage(new FileInputStream("image.tiff"));
            pdfDoc.addNewPage();
            pdfDoc.addImage(tiff);
        }
        pdfDoc.close();
        workbook.close();
    }

    private static Workbook getWorkbook(String excelFilePath) throws IOException {
        Workbook workbook = null;
        if (excelFilePath.endsWith(".xlsx")) {
            workbook = new XSSFWorkbook(new FileInputStream(excelFilePath));
        } else if (excelFilePath.endsWith(".xls")) {
            workbook = new HSSFWorkbook(new FileInputStream(excelFilePath));
        } else {
            throw new IllegalArgumentException("The specified file is not Excel file");
        }
        return workbook;
    }
}

该代码使用iText库将Excel文件转换为PDF文件。它首先使用Apache POI库读取Excel文件，然后使用iText库将每个工作表转换为PDF页面。在此示例中，我们使用TiffImage类将图像添加到PDF页面中。