java excel转pdf的工具方法类

以下是一个Java Excel转PDF的工具方法类的示例：

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import com.lowagie.text.Document;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.XfdfReader;

public class ExcelToPdfConverter {

    public static void convert(String inputFile, String outputFile) throws IOException {
        Workbook workbook = null;
        if (inputFile.endsWith(".xls")) {
            workbook = new HSSFWorkbook();
        } else if (inputFile.endsWith(".xlsx")) {
            workbook = new XSSFWorkbook();
        } else {
            throw new IllegalArgumentException("The specified file is not an Excel file");
        }

        // Load Excel file into workbook
        workbook.setReadOnly(true);
        workbook.setFileReadOnly(false);
        workbook.setSaveReadOnly(false);
        workbook.clearBackupFiles();
        workbook.clearTemplateRecords();
        workbook.clearPrintAreas();
        workbook.clearCellComments();

        // Create PDF document
        Document pdfDocument = new Document();

        // Open PDF writer
        PdfWriter.getInstance(pdfDocument, new FileOutputStream(outputFile));

        // Open PDF document
        pdfDocument.open();

        // Convert each sheet in the workbook to a PDF page
        for (int i = 0; i < workbook.getNumberOfSheets(); i++) {
            // Get current sheet
            Sheet sheet = workbook.getSheetAt(i);

            // Create PDF page for current sheet
            pdfDocument.newPage();

            // Convert sheet to PDF
            XfdfReader.getInstance(sheet).write(pdfDocument);
        }

        // Close PDF document
        pdfDocument.close();

        // Close workbook
        workbook.close();
    }

    public static void main(String[] args) throws IOException {
        String inputFile = "test.xlsx";
        String outputFile = "test.pdf";
        ExcelToPdfConverter.convert(inputFile, outputFile);
        System.out.println("Conversion complete!");
    }

}

该示例使用Apache POI和iText库来读取Excel文件并将其转换为PDF格式。您需要将这些库添加到您的项目中，然后将输入和输出文件路径传递给convert（）方法。请注意，此示例假定您的Excel文件只包含单个工作表。如果您的Excel文件包含多个工作表，则需要更改convert（）方法以处理每个工作表。