java excel转pdf

要将Java中的Excel文件转换为PDF文件，可以使用Apache POI和iText库。下面是一个简单的示例代码：

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.ss.util.AreaReference;
import org.apache.poi.ss.util.CellReference;

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

public class ExcelToPdfConverter {

    public static void convert(String inputFilePath, String outputFilePath) throws IOException, DocumentException {
        Workbook workbook = new HSSFWorkbook();
        workbook = WorkbookFactory.create(new File(inputFilePath));
        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream(outputFilePath));
        document.open();
        for (int i = 0; i < workbook.getNumberOfSheets(); i++) {
            org.apache.poi.ss.usermodel.Sheet sheet = workbook.getSheetAt(i);
            AreaReference areaReference = new AreaReference(sheet.getPrintArea(0), 
                sheet.getWorkbook().getSpreadsheetVersion());
            CellReference[] cellReferences = areaReference.getAllReferencedCells();
            PdfPTable table = new PdfPTable(cellReferences.length);
            for (int j = 0; j < cellReferences.length; j++) {
                org.apache.poi.ss.usermodel.Cell cell = sheet.getRow(cellReferences[j].getRow())
                    .getCell(cellReferences[j].getCol());
                table.addCell(cell.toString());
            }
            document.add(table);
        }
        document.close();
    }
}

你可以使用这个方法来将Excel文件转换为PDF文件:

ExcelToPdfConverter.convert("path/to/excel/file", "path/to/pdf/file");