Apache POI转换器，docx到pdf异常

Question

我需要添加表到现有的docx文档，然后转换成Pdf文件，所以我使用Apache POI和Apache POI转换器库。这是我的代码：

import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.converter.pdf.PdfConverter;
import org.apache.poi.xwpf.converter.pdf.PdfOptions;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.poi.xwpf.usermodel.XWPFTableRow;
import org.apache.xmlbeans.XmlCursor;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTJc;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblGrid;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTcPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STJc;
....
public static void main(String[] args) throws Exception {
   FileInputStream fis = new FileInputStream("e:\\projects\\1.docx");
   XWPFDocument doc = new XWPFDocument(OPCPackage.open(fis));
   fis.close();
   XWPFTable table = doc.createTable();

//added to satisfy poi docx->pdf converter and avoid future npe on getCTTbl().getTblGrid()...
   CTTblGrid ctg = table.getCTTbl().getTblGrid();
   table.getCTTbl().setTblGrid(ctg);

   fillTable(table);

   OutputStream pdfFile = new FileOutputStream(new File("e:\\projects\\1.pdf"));
   PdfOptions options= PdfOptions.create().fontEncoding("UTF-8");
   PdfConverter.getInstance().convert(doc, pdfFile, options);
}

private static XWPFTable fillTable(XWPFTable table) {
        //create first row
        XWPFTableRow tableRowOne = table.getRow(0);
        tableRowOne.getCell(0).setText("col one, row one");
        tableRowOne.getCell(1).setText("col two, row one");
        tableRowOne.getCell(2).setText("col three, row one");
        //create second row
        XWPFTableRow tableRowTwo = table.getRow(1);
        tableRowTwo.getCell(0).setText("col one, row two");
        tableRowTwo.getCell(1).setText("col two, row two");
        tableRowTwo.getCell(2).setText("col three, row two");
        //create third row
        XWPFTableRow tableRowThree = table.getRow(2);
        tableRowThree.getCell(0).setText("col one, row three");
        tableRowThree.getCell(1).setText("col two, row three");
        tableRowThree.getCell(2).setText("col three, row three");

        //align center
        CTTblPr tblPr = table.getCTTbl().getTblPr();
        CTJc jc = (tblPr.isSetJc() ? tblPr.getJc() : tblPr.addNewJc());
        jc.setVal(STJc.CENTER);

        //added to satisfy poi docx->pdf converter and avoid npe on getTcPr().getWidth()
        for(int i = 0; i < table.getNumberOfRows(); i++){
            XWPFTableRow row = table.getRow(i);
            int numCells = row.getTableCells().size();
            for(int j = 0; j < numCells; j++){
                XWPFTableCell cell = row.getCell(j);

                CTTcPr ct = cell.getCTTc().getTcPr();
                cell.getCTTc().setTcPr(ct);

            }
        }

        return table;
    }

但我有一个例外：

org.apache.poi.xwpf.converter.core.xwpfConverterException：java.lang.IllegalArgumentException：PdfPTable构造函数中的列数必须大于零。在org.apache.poi.xwpf.converter.pdf.pdfconverter.doConvert(pdfconverter.java:70)在org.apache.poi.xwpf.converter.pdf.pdfconverter.doConvert(pdfconverter.java:38)在org.apache.poi.xwpf.converter.core.abstractxwpfconverter.java:45)

但是如果只使用以下方法将我编辑的docx文档（W/O转换）写入文件：

doc.write(new File("e:\\projects\\1.docx"));

所以我不明白为什么我会收到“PdfPTable构造函数中的列数必须大于零”。当我创建的表有3行3列时，出现异常。看起来像一些问题与pdf转换器或我创建表在错误的方式。也许有人能给我提点建议？

Answer 1

将包“org.apache.poi.xwpf.converter.pdf”更改为包“fr.opensagres.poi.xwpf.converter.pdf”。

在本部分中。：

 PdfOptions options= PdfOptions.create().fontEncoding("UTF-8");
 PdfConverter.getInstance().convert(doc, pdfFile, options);

到。：

  fr.opensagres.poi.xwpf.converter.pdf.PdfOptions options = fr.opensagres.poi.xwpf.converter.pdf.PdfOptions.create().fontEncoding("windows-1250");
  fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.getInstance().convert(document, pdfFile, options);