【发布时间】:2017-03-17 16:06:06
【问题描述】:
我需要将表格添加到现有的 docx 文档中,然后将其转换为 Pdf 文件,所以我使用 Apache POI 和 Apache POI 转换器库。 有我的代码:
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;
}
但我收到这样的异常:
org.apache.poi.xwpf.converter.core.XWPFConverterException: java.lang.IllegalArgumentException:PdfPTable 中的列数 构造函数必须大于零。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.convert(AbstractXWPFConverter.java:45)
但是,如果只是将我编辑的 docx 文档(无转换)写入文件,则使用:
doc.write(new File("e:\\projects\\1.docx"));
所以我无法弄清楚为什么我收到“PdfPTable 构造函数中的列数必须大于零。”异常,当我创建的表有 3 行和 3 列时。 看起来 pdf 转换器有问题,或者我以错误的方式创建表格。 也许有人可以向我提出一些建议?
【问题讨论】:
-
Apache POI 中没有
PdfConverter类 - 该类来自哪里?
标签: java apache pdf apache-poi docx