Docx to HTML - NullPointerException when adding table

[monika_thakran]

I am getting a similar error when I am trying to add a table to the contents of the mainDocumentPart at a specific index, using below code

wordMLPackage.getMainDocumentPart().getContent().add(5, tbl);

However, it is working perfectly fine if I add it directly to the mainDocumentPart

wordMLPackage.getMainDocumentPart().addObject(tbl);

Getting error while generating the output file using
Docx4J.toFO(foSettings, os, Docx4J.FLAG_EXPORT_PREFER_XSL);


Code to create table is

Tbl tbl = Context.getWmlObjectFactory().createTbl();

// // ///////////////////
String strTblPr = "<w:tblPr " + Namespaces.W_NAMESPACE_DECLARATION + ">" + "<w:tblStyle w:val=\"TableGrid\"/>"
+ "<w:tblW w:w=\"0\" w:type=\"auto\"/>" + "<w:tblLook w:val=\"04A0\"/>" + "</w:tblPr>";
TblPr tblPr = null;

try {
tblPr = (TblPr) XmlUtils.unmarshalString(strTblPr);
}

catch (JAXBException e) {
// Shouldn't happen
e.printStackTrace();
}
tbl.setTblPr(tblPr);

TblGrid tblGrid = Context.getWmlObjectFactory().createTblGrid();
tbl.setTblGrid(tblGrid);

int writableWidthTwips1 = wordMLPackage.getDocumentModel().getSections().get(0).getPageDimensions()
.getWritableWidthTwips();
int cellWidthTwips1 = new Double(Math.floor((writableWidthTwips / cols))).intValue();

for (int i = 0; i < cols; i++) {
TblGridCol gridCol = Context.getWmlObjectFactory().createTblGridCol();
gridCol.setW(BigInteger.valueOf(cellWidthTwips));
tblGrid.getGridCol().add(gridCol);
}

List<String> ls = new ArrayList<String>();
ls.add("monika");
ls.add("abc");
ls.add("hi");
ls.add("hello");
ls.add("Byee");

Tc tc = null;
Tr tr = null;
int rows = 3;
for (int j = 0; j < rows; j++) {
tr = Context.getWmlObjectFactory().createTr();
for (int i = 0; i < cols; i++) {
tc = Context.getWmlObjectFactory().createTc();

TcPr tcPr = Context.getWmlObjectFactory().createTcPr();
tc.setTcPr(tcPr);
TblWidth cellWidth = Context.getWmlObjectFactory().createTblWidth();
tcPr.setTcW(cellWidth);
cellWidth.setType("dxa");
cellWidth.setW(BigInteger.valueOf(cellWidthTwips));
org.docx4j.wml.P p1 = factory.createP();
org.docx4j.wml.Text t1 = factory.createText();
t1.setValue(ls.get(i));
org.docx4j.wml.R run1 = factory.createR();
run1.getContent().add(t1);
p1.getContent().add(run1);
tc.getContent().add(p1);
tr.getContent().add(tc);

}

tbl.getContent().add(tr);
}


Can someone please tell me what am I missing here

[jason]

What is the stack trace? What is the value of your cols variable?

If the exception happens in FO/PDF export, can you just post your docx so we can try exporting that?

[monika_thakran]

Hi Team,

I am getting a similar exception when I am trying to add a table to the contents of the mainDocument part, using below code

Code: Select all

wordMLPackage.getMainDocumentPart().getContent().add(5, tbl);

However, it works perfectly file if I add it directly to the mainDocumentPart instead of content list, like below

Code: Select all

wordMLPackage.getMainDocumentPart().addObject(tbl);

Exception comes on below line

Code: Select all

Docx4J.toFO(foSettings, os, Docx4J.FLAG_EXPORT_PREFER_XSL);

Code to create table

Code: Select all

      Tbl tbl = Context.getWmlObjectFactory().createTbl();

//      // ///////////////////
      String strTblPr = "<w:tblPr " + Namespaces.W_NAMESPACE_DECLARATION + ">" + "<w:tblStyle w:val=\"TableGrid\"/>"
            + "<w:tblW w:w=\"0\" w:type=\"auto\"/>" + "<w:tblLook w:val=\"04A0\"/>" + "</w:tblPr>";
      TblPr tblPr = null;

      try {
         tblPr = (TblPr) XmlUtils.unmarshalString(strTblPr);
      }

      catch (JAXBException e) {
         // Shouldn't happen
         e.printStackTrace();
      }
      tbl.setTblPr(tblPr);

      TblGrid tblGrid = Context.getWmlObjectFactory().createTblGrid();
      tbl.setTblGrid(tblGrid);

      int writableWidthTwips1 = wordMLPackage.getDocumentModel().getSections().get(0).getPageDimensions()
            .getWritableWidthTwips();
      int cellWidthTwips1 = new Double(Math.floor((writableWidthTwips / cols))).intValue();

      for (int i = 0; i < cols; i++) {
         TblGridCol gridCol = Context.getWmlObjectFactory().createTblGridCol();
         gridCol.setW(BigInteger.valueOf(cellWidthTwips));
         tblGrid.getGridCol().add(gridCol);
      }

      List<String> ls = new ArrayList<String>();
      ls.add("monika");
      ls.add("abc");
      ls.add("hi");
      ls.add("hello");
      ls.add("Byee");

      Tc tc = null;
      Tr tr = null;
      int rows = 3;
      for (int j = 0; j < rows; j++) {
         tr = Context.getWmlObjectFactory().createTr();
         for (int i = 0; i < cols; i++) {
            tc = Context.getWmlObjectFactory().createTc();

            TcPr tcPr = Context.getWmlObjectFactory().createTcPr();
            tc.setTcPr(tcPr);
            TblWidth cellWidth = Context.getWmlObjectFactory().createTblWidth();
            tcPr.setTcW(cellWidth);
            cellWidth.setType("dxa");
            cellWidth.setW(BigInteger.valueOf(cellWidthTwips));
            org.docx4j.wml.P p1 = factory.createP();
            org.docx4j.wml.Text t1 = factory.createText();
            t1.setValue(ls.get(i));
            org.docx4j.wml.R run1 = factory.createR();
            run1.getContent().add(t1);
            p1.getContent().add(run1);
            tc.getContent().add(p1);
            tr.getContent().add(tc);

         }

         tbl.getContent().add(tr);
      }

Can someone help me with what am I missing here?

[jason]

What is the stack trace? What is the value of your cols variable?

If the exception happens in FO/PDF export, can you just post your docx so we can try exporting that?