Question

I am using jExcel API to write data to excel sheet. And below is my code which is working fine. But If I am writing large number of data to Excel sheet, I am getting this exception-

jxl.write.biff.RowsExceededException: The maximum number of rows permitted on
a worksheet been exceeded

Below is the code. How can I write data to another sheet if first sheet does not accommodate any more rows. Can anyone help me out here?

 public void write() throws IOException, WriteException {

    readFileIPAddress();

    File file = new File(inputFile);
    WorkbookSettings wbSettings = new WorkbookSettings();

    wbSettings.setLocale(new Locale("en", "EN"));

    WritableWorkbook workbook = Workbook.createWorkbook(file, wbSettings);
    workbook.createSheet("Report", 0);
    WritableSheet excelSheet = workbook.getSheet(0);
    createLabel(excelSheet);
    createContent(excelSheet);

    workbook.write();
    workbook.close();
    }


    private void createLabel(WritableSheet sheet) throws WriteException {

    WritableFont times15pt = new WritableFont(WritableFont.TAHOMA, 11);
    times = new WritableCellFormat(times15pt);
    times.setWrap(true);

    WritableFont times10ptBoldUnderline = new WritableFont(WritableFont.TAHOMA, 13, WritableFont.BOLD, false, UnderlineStyle.SINGLE);
    timesBoldUnderline = new WritableCellFormat(times10ptBoldUnderline);
    timesBoldUnderline.setWrap(true);

    CellView cv = new CellView();
    cv.setFormat(times);
    cv.setFormat(timesBoldUnderline);
    cv.setAutosize(true);

    addCaption(sheet, 0, 0, "IP Address");
    addCaption(sheet, 1, 0, "Digital Element Country Code");
    addCaption(sheet, 2, 0, "Maxmind Country Code");
    addCaption(sheet, 3, 0, "Neustar City");
    addCaption(sheet, 4, 0, "Maxmind City");
    addCaption(sheet, 5, 0, "Neustar Zip Code");
    addCaption(sheet, 6, 0, "Maxmind Zip Code");
    }

     private void createContent(WritableSheet sheet) throws WriteException, RowsExceededException {

    NaEdgeDb edge = null;
    try {
    while (!workQueue.isEmpty()) {
        String ipAddress = workQueue.take();

        edge = new NaEdgeDb();
        edge.set_server_addr(serverIPAddress);
        edge.set_id(10);
        if (checkIPDuplicate.add(ipAddress)) {

            resp = GeoLocationService.getLocationIp(ipAddress, 0);
            edge.naQueryEdge(ipAddress);

            addNumber(sheet, 0, j, ipAddress);

            addNumber(sheet, 1, j, (edge.edge_twoLetterCountry));

            addNumber(sheet, 2, j, (resp.getLocation() != null ? resp.getLocation().getCountry() : null));

            addNumber(sheet, 3, j, (edge.edge_city));

            addNumber(sheet, 4, j, (resp.getLocation() != null ? resp.getLocation().getCity() : null));

            addNumber(sheet, 5, j, (edge.edge_postalCode));

            addNumber(sheet, 6, j, (resp.getLocation() != null ? resp.getLocation().getZipCode() : null));
            j++;
        } 
        } 
    } catch (Exception e) {
        getLogger().log(LogLevel.ERROR, e.fillInStackTrace());
        e.printStackTrace();
    }
  }

    private void addCaption(WritableSheet sheet, int column, int row, String s) throws RowsExceededException,
        WriteException {
    Label label;
    label = new Label(column, row, s, timesBoldUnderline);
    sheet.addCell(label);
    }

    private void addNumber(WritableSheet sheet, int column, int row, String str) throws WriteException,
        RowsExceededException {
    Label number;
    number = new Label(column, row, str);
    sheet.addCell(number);
    }

Updated Code:-

This is still throwing same exception. Don’t know why? I already handled creation of new sheet in this code? Any problem with this code?

 private void createContent(WritableSheet sheet, WritableWorkbook workbook2) throws WriteException, RowsExceededException {

    NaEdgeDb edge = null;
    WritableSheet ws2 = workbook2.createSheet("sheet2", 2);
    try {
    while (!workQueue.isEmpty()) {
        String ipAddress = workQueue.take(); // generateIPAddress();

        edge = new NaEdgeDb();
        edge.set_server_addr(serverIPAddress);
        edge.set_id(10);
        System.out.println(sheet.getRows());
        if (checkIPDuplicate.add(ipAddress) && sheet.getRows() <= 65536 ) {

            resp = GeoLocationService.getLocationIp(ipAddress, 0);
            edge.naQueryEdge(ipAddress);

            addNumber(sheet, 0, j, ipAddress);

            addNumber(sheet, 1, j, (edge.edge_twoLetterCountry));

            addNumber(sheet, 2, j, (resp.getLocation() != null ? resp.getLocation().getCountry() : null));

            addNumber(sheet, 3, j, (edge.edge_city));

            addNumber(sheet, 4, j, (resp.getLocation() != null ? resp.getLocation().getCity() : null));

            addNumber(sheet, 5, j, (edge.edge_postalCode));

            addNumber(sheet, 6, j, (resp.getLocation() != null ? resp.getLocation().getZipCode() : null));
            j++;
        } else {
            resp = GeoLocationService.getLocationIp(ipAddress, 0);
            edge.naQueryEdge(ipAddress);

            addNumber(ws2, 0, j, ipAddress);

            addNumber(ws2, 1, j, (edge.edge_twoLetterCountry));

            addNumber(ws2, 2, j, (resp.getLocation() != null ? resp.getLocation().getCountry() : null));

            addNumber(ws2, 3, j, (edge.edge_city));

            addNumber(ws2, 4, j, (resp.getLocation() != null ? resp.getLocation().getCity() : null));

            addNumber(ws2, 5, j, (edge.edge_postalCode));

            addNumber(ws2, 6, j, (resp.getLocation() != null ? resp.getLocation().getZipCode() : null));
            k++;
        }
        } 
    } catch (Exception e) {
        getLogger().log(LogLevel.ERROR, e.fillInStackTrace());
        e.printStackTrace();
    }
    System.out.println("Size of HashSet:" + checkIPDuplicate.size());
    }

Answer 1

I think you can use WritableWorkbook#createSheet(java.lang.String, int)) to create the new sheet when required.

Instead of WritableSheet, pass WritableWorkbook in createContent method. Check the number of rows added in the current sheet using some counter. If sheet is full (counter == MAX_ROWS), create a new sheet and reset the row counter to 0.