FileOutputStream out = new FileOutputStream(new File("D:\\xx1\\xx.xlsx")); workbook.write(out); out.close(); workbook.close(); 把这块生成的xlsx文件 生成pdf的

要将Excel文件转换为PDF，可以使用Apache POI和iText库来实现。下面是一个简单的例子：

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.XfdfReader;

public class ExcelToPdfConverter {
    public static void main(String[] args) {
        try {
            // Load Excel file
            XSSFWorkbook workbook = new XSSFWorkbook(new File("D:\\xx1\\xx.xlsx"));

            // Create PDF document
            Document pdfDoc = new Document();
            OutputStream pdfOut = new FileOutputStream(new File("D:\\xx1\\xx.pdf"));
            PdfWriter.getInstance(pdfDoc, pdfOut);

            // Open PDF document
            pdfDoc.open();

            // Convert each sheet of Excel file to PDF
            for (int i = 0; i < workbook.getNumberOfSheets(); i++) {
                XfdfReader reader = new XfdfReader(workbook.getSheetAt(i));

                // Add converted sheet to PDF document
                pdfDoc.add(reader);
            }

            // Close PDF document and Excel workbook
            pdfDoc.close();
            workbook.close();

            System.out.println("PDF file generated successfully.");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

需要注意的是，这里使用了iText库来将Excel文件转换为PDF，需要将iText的依赖添加到项目中。