Develop Reference

How to reduce code when create an cell in apache poi?

I am creating a sheet with apache poi, it have a lot of column and row name so I create a lot of code, I have a lot of code duplicate, How can I can create a function and reuse it for another?
Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet("Sheet1");
try (OutputStream os = new FileOutputStream("report.xls")) {
Row row;
Cell cell;
row = sheet.createRow(0);
cell = row.createCell(0);
cell.setCellValue("Shop:");
cell = row.createCell(1);
cell.setCellValue(4);
cell = row.createCell(6);
cell.setCellValue("Export Date:");
cell = row.createCell(7);
cell.setCellValue("14.06.2019");
// -----
row = sheet.createRow(2);
cell = row.createCell(0);
cell.setCellValue("Code Supervisor:");
cell = row.createCell(1);
cell.setCellValue(4);
cell = row.createCell(6);
cell.setCellValue("Audit Date:");
cell = row.createCell(7);
cell.setCellValue("dd.MM.yyyy");
//----
row = sheet.createRow(4);
cell = row.createCell(6);
cell.setCellValue("Shop Note:");
cell = row.createCell(7);
cell.setCellValue("Note something");
wb.write(os);
}catch(Exception e) {
System.out.println(e.getMessage());
}

How to hide particular column in Pivot Table using Apache POI (Java)

while hiding column in pivot table. text above pivot table also getting removedI want to hide one column in pivot table. If I remove that column then the functionality should not get effected. How can I achieve that functionality by removing or hiding that column in pivot table
public class Createxlsx {
public static void main(String[] args) throws FileNotFoundException, IOException, InvalidFormatException {
createPivotTable();
}
private static void createPivotTable() throws IOException, FileNotFoundException {
try (XSSFWorkbook wb = new XSSFWorkbook()) {
XSSFSheet sheet1 = wb.createSheet("1e");
XSSFSheet sheet = wb.createSheet("1econtent");
XSSFFont font = wb.createFont();
font.setFontHeightInPoints((short) 15);
font.setColor(IndexedColors.WHITE.getIndex());
// sheet.setTabColor(10);
/* CTColor color = CTColor.Factory.newInstance();
color.setIndexed(IndexedColors.RED.getIndex());
sheet.getCTWorksheet().getSheetPr().setTabColor(color);*/
// sheet1.setTabColor( new XSSFColor( Color.RED ) );
// sheet.setTabColor(1)
/* CTColor color = CTColor.Factory.newInstance();
color.setIndexed(IndexedColors.GREEN.getIndex());
sheet1.getCTWorksheet().getSheetPr().setTabColor(color); */
// sheet1.setTabColor(0);
//Set the tab color
// sheet.setTabColor(Color.getRed());
//Save the Excel file
//workbook.save(dataDir + "AsposeColoredTab_Out.xls");
CellStyle fontStyle = wb.createCellStyle();
fontStyle.setFont(font);
fontStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
fontStyle.setFillForegroundColor(IndexedColors.ORANGE.getIndex());
fontStyle.setWrapText(true);
CellStyle fontStyle1 = wb.createCellStyle();
fontStyle1.setFont(font);
fontStyle1.setFillPattern(FillPatternType.SOLID_FOREGROUND);
fontStyle1.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
fontStyle1.setWrapText(true);
CellStyle fontStyle2 = wb.createCellStyle();
fontStyle2.setFont(font);
fontStyle2.setFillPattern(FillPatternType.SOLID_FOREGROUND);
XSSFColor color = new XSSFColor();
color.setARGBHex("fcd5b4");
fontStyle2.setFillForegroundColor(color.getIndexed());
fontStyle2.setWrapText(true);
CellStyle fontStyle3 = wb.createCellStyle();
fontStyle3.setFont(font);
fontStyle3.setFillPattern(FillPatternType.SOLID_FOREGROUND);
XSSFColor color1 = new XSSFColor();
color1.setARGBHex("fcd5b4");
fontStyle3.setFillForegroundColor(color1.getIndexed());
fontStyle3.setWrapText(true);
sheet1.setDisplayGridlines(false);
sheet1.addMergedRegion(new CellRangeAddress(4,7,0,5));
sheet1.addMergedRegion(new CellRangeAddress(0,0,0,5));
sheet1.addMergedRegion(new CellRangeAddress(1,1,1,5));
sheet1.addMergedRegion(new CellRangeAddress(2,2,1,5));
sheet1.addMergedRegion(new CellRangeAddress(3,3,0,5));
sheet1.setColumnWidth(1, 25*256);
sheet1.setColumnWidth(2, 45*256);
Row row1 = sheet1.createRow(0);
Cell cell11 = row1.createCell(0);
cell11.setCellStyle(fontStyle);
cell11.setCellValue("XXX");
Row row2 = sheet1.createRow(1);
// row2.setRowStyle(fontStyle);
//row2.setRowStyle(fontStyle2);
Cell cell21 = row2.createCell(0);
//CellStyle alignCellStyle = cell21.getCellStyle();
CellStyle headerStyle = wb.createCellStyle();
headerStyle.setAlignment(HorizontalAlignment.RIGHT);
//alignCellStyle.setAlignment(HorizontalAlignment.RIGHT);
cell21.setCellValue("Preparued for:");
cell21.setCellStyle(fontStyle2);
Cell cell22 = row2.createCell(1);
cell22.setCellValue("Rerrrrts Tests");
cell22.setCellStyle(fontStyle2);
Row row3 = sheet1.createRow(2);
// row3.setRowStyle(fontStyle2);
Cell cell31 = row3.createCell(0);
CellStyle alignCellStyle1 = cell31.getCellStyle();
alignCellStyle1.setAlignment(HorizontalAlignment.RIGHT);
cell31.setCellValue("Time Period:");
cell31.setCellStyle(fontStyle2);
Cell cell32 = row3.createCell(1);
DataFormat poiFormat = wb.createDataFormat();
CellStyle cellStyle = wb.createCellStyle();
String excelFormatPattern = DateFormatConverter.convert(Locale.US, "mm/dd/yyyy");
cellStyle.setDataFormat(poiFormat.getFormat(excelFormatPattern));
cell32.setCellValue(new Date());
cell32.setCellStyle(fontStyle2);
Row row4 = sheet1.createRow(3);
Cell cell41 = row4.createCell(0);
cell41.setCellValue("Table 1e: Confs Created ");
//row4.setRowStyle(fontStyle1);
cell41.setCellStyle(fontStyle1);
Row row5 = sheet1.createRow(4);
//row5.setRowStyle(fontStyle2);
Cell cell51 = row5.createCell(0);
cell51.setCellValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
cell51.setCellStyle(fontStyle3);
setCellData(sheet,wb);
wb.getSheet("1econtent").setSelected(false);
wb.setSheetVisibility(wb.getSheetIndex("1econtent"),SheetVisibility.VISIBLE);
AreaReference source = new AreaReference("A1:D5", SpreadsheetVersion.EXCEL2007);
CellReference position = new CellReference(10,0);
XSSFPivotTable pivotTable = sheet1.createPivotTable(source, position,wb.getSheet("1econtent"));
pivotTable.addReportFilter(2);
pivotTable.addRowLabel(0);
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 1);
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 1,"% of value");
pivotTable.getCTPivotTableDefinition().getDataFields().getDataFieldArray(1).setShowDataAs(org.openxmlformats.schemas.spreadsheetml.x2006.main.STShowDataAs.PERCENT_OF_COL);
DataFormat dataformat = wb.createDataFormat();
short numFmtId = dataformat.getFormat("0.00%");
pivotTable.getCTPivotTableDefinition().getDataFields().getDataFieldArray(1).setNumFmtId(numFmtId);
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).setAutoShow(false);
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).getItems().getItemArray(0).unsetT();
pivotTable.getCTPivotTableDefinition().getPivotFields().getPivotFieldArray(0).getItems().getItemArray(0).setX((long)0);
pivotTable.getPivotCacheDefinition().getCTPivotCacheDefinition().getCacheFields().getCacheFieldArray(0).getSharedItems().addNewS().setV("Jane");
pivotTable.getCTPivotTableDefinition().getPageFields().getPageFieldArray(0).setItem(0);
sheet1.getRow(10);
pivotTable.getCTPivotTableDefinition().getPivotTableStyleInfo().setName("PivotStyleMedium10");
try (FileOutputStream fileOut = new FileOutputStream("ooxml-pivottablesa.xlsx")) {
wb.write(fileOut);
}
}
}
public static void setCellData(XSSFSheet sheet,XSSFWorkbook wb){
Row row1 = sheet.createRow(0);
// Create a cell and put a value in it.
Cell cell11 = row1.createCell(0);
cell11.setCellValue("Names");
Cell cell12 = row1.createCell(1);
cell12.setCellValue("Confts");
Cell cell13 = row1.createCell(2);
cell13.setCellValue("ConftsAS");
Cell cell14 = row1.createCell(3);
cell14.setCellValue("Human");
Row row2 = sheet.createRow(1);
Cell cell21 = row2.createCell(0);
cell21.setCellValue("Jane");
Cell cell22 = row2.createCell(1);
cell22.setCellValue(10);
Cell cell23 = row2.createCell(2);
cell23.setCellValue(100);
Cell cell24 = row2.createCell(3);
cell24.setCellValue("Yes");
Row row3 = sheet.createRow(2);
Cell cell31 = row3.createCell(0);
cell31.setCellValue("Tarzan");
Cell cell32 = row3.createCell(1);
cell32.setCellValue(5);
Cell cell33 = row3.createCell(2);
cell33.setCellValue(100);
Cell cell34 = row3.createCell(3);
cell34.setCellValue("Yes");
Row row4 = sheet.createRow(3);
Cell cell41 = row4.createCell(0);
cell41.setCellValue("Terk");
Cell cell42 = row4.createCell(1);
cell42.setCellValue(10);
Cell cell43 = row4.createCell(2);
cell43.setCellValue(90);
Cell cell44 = row4.createCell(3);
cell44.setCellValue("No");
cell44.getCellStyle().setHidden(false);
Row row5 = sheet.createRow(4);
Cell cell211 = row5.createCell(0);
cell211.setCellValue("Jane");
Cell cell221 = row5.createCell(1);
cell221.setCellValue(10);
Cell cell231 = row5.createCell(2);
cell231.setCellValue(60);
Cell cell241 = row5.createCell(3);
cell241.setCellValue("No");
cell241.getCellStyle().setHidden(false);
}
}
I want to hide one column in pivot table So as shown in this Image I want to hide first column how can I hide.

Line crushed after adding the 2nd list to create excel file

I want to insert two list in the same HSSFSheet I start by the first one and when I go to insert values of the second list the firstone is crushed
this is my method of generating excel file
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet spreadsheet = workbook.createSheet("employe db");
HSSFRow row = spreadsheet.createRow(0);
HSSFCell cell;
cell = row.createCell(0);
cell.setCellValue("Ref");
cell = row.createCell(1);
cell.setCellValue("Fournisseur");
cell = row.createCell(2);
cell.setCellValue("Produit");
cell = row.createCell(3);
cell.setCellValue("Quantité");
cell = row.createCell(4);
cell.setCellValue("Prix");
cell = row.createCell(5);
cell.setCellValue("Somme");
cell = row.createCell(6);
cell.setCellValue("Solde Avant");
cell = row.createCell(7);
cell.setCellValue("Après");
cell = row.createCell(8);
cell.setCellValue("Date");
cell = row.createCell(9);
cell.setCellValue("Description");
//paiement//
cell = row.createCell(14);
cell.setCellValue("Libellé");
cell = row.createCell(15);
cell.setCellValue("Type");
cell = row.createCell(16);
cell.setCellValue("Montant");
cell = row.createCell(17);
cell.setCellValue("Date ");
cell = row.createCell(18);
cell.setCellValue("Echance");
Iterator<AchatProduit> itr = list.iterator();
int i = 1;
while (itr.hasNext()) {
AchatProduit emp = (AchatProduit) itr.next();
row = spreadsheet.createRow(i);
cell = row.createCell(0);
cell.setCellValue(emp.getPk_seq());
cell = row.createCell(1);
cell.setCellValue(emp.getFournisseur().getNom() + " // " + emp.getFournisseur().getSociete());
cell = row.createCell(2);
cell.setCellValue(emp.getProduit().getLibelle());
cell = row.createCell(3);
cell.setCellValue(emp.getQuantite());
cell = row.createCell(4);
cell.setCellValue(emp.getPrix());
cell = row.createCell(5);
cell.setCellValue(emp.getSomme());
cell = row.createCell(6);
cell.setCellValue(emp.getSoldeAvant());
cell = row.createCell(7);
cell.setCellValue(emp.getSoldeApres());
cell = row.createCell(8);
cell.setCellValue(emp.getStringDateAchat());
cell = row.createCell(9);
cell.setCellValue(emp.getDescription());
i++;
}
Iterator<CompteFournisseur> itr2 = listPaiement.iterator();
int j = 1;
while (itr2.hasNext()) {
CompteFournisseur emp = (CompteFournisseur) itr2.next();
row = spreadsheet.createRow(j);/// line that cauz problem
cell = row.createCell(14);
cell.setCellValue(emp.getLibellePaiment());
cell = row.createCell(15);
cell.setCellValue(emp.getTypePaiement());
cell = row.createCell(16);
cell.setCellValue(emp.getMontant());
cell = row.createCell(17);
cell.setCellValue(emp.getStringDatePaiement());
cell = row.createCell(18);
cell.setCellValue(emp.getStringDateEcheance());
j++;
}
FileOutputStream out = null;
try {
String exepath = path;
if (exepath.endsWith(".xls") || exepath.endsWith(".xlsx")) {
out = new FileOutputStream(new File(exepath));
workbook.write(out);
out.close();
System.out.println("Executed successfully");
} else {
String bufpath = exepath.concat(".xls");
out = new FileOutputStream(new File(bufpath));
workbook.write(out);
out.close();
}
} catch (Exception aa) {
}
}
normaly the yellow area should have values also but when I call this row = spreadsheet.createRow(j); beacause j=1; so it crush the values of first iterator (it)
so there any way to insert values because I have two lists
thanks is advance
UPDATE
Iterator<CompteFournisseur> itr2 = listPaiement.iterator();
int j = 1;
while (itr2.hasNext()) {
CompteFournisseur emp = (CompteFournisseur) itr2.next();
row = spreadsheet.getRow(j);
if (row == null) {
row = spreadsheet.createRow(j);
cell = row.createCell(14);
cell.setCellValue(emp.getLibellePaiment());
cell = row.createCell(15);
cell.setCellValue(emp.getTypePaiement());
cell = row.createCell(16);
cell.setCellValue(emp.getMontant());
cell = row.createCell(17);
cell.setCellValue(emp.getStringDatePaiement());
cell = row.createCell(18);
cell.setCellValue(emp.getStringDateEcheance());
} else {
cell = row.createCell(14);
cell.setCellValue(emp.getLibellePaiment());
cell = row.createCell(15);
cell.setCellValue(emp.getTypePaiement());
cell = row.createCell(16);
cell.setCellValue(emp.getMontant());
cell = row.createCell(17);
cell.setCellValue(emp.getStringDatePaiement());
cell = row.createCell(18);
cell.setCellValue(emp.getStringDateEcheance());
}
j++;
}

Spring Security and Apache POI Issues

I have a Java Spring web application with Spring Security where the user enters a date, the
database is queried based on that date and the result is sent back to the user's browser as an excel file via HSSFWorkbook writing to ServletOutputStream.
If the date selected is in the weeks of 12/28/2013-1/4/2014, 1/12/2014-1/18-2014, 1/19/2014-1/25/2014, or 1/26/2014-2/1/2014 the file that is sent to the user for download is converted to the contentType "text/html" even though it is explicitly set to "application/x-ms-excel".
The resulting Excel file is corrupted and contains only strange symbols. This only happens when Spring-Security is included and so far, only for the dates listed.
If anyone has had this problem could you please let me know how you fixed it?
This generates the workbook:
public static HSSFWorkbook getExcelRemittance(HashMap<String,List> items)
{
List<ItemView> remit = items.get("remit");
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet;
sheet = workbook.createSheet("Final Remittance");
Row header = sheet.createRow(0);
Cell cell1 = header.createCell(0);
cell1.setCellValue("DISNEY INVOICE NUM");
Cell cell2 = header.createCell(1);
cell2.setCellValue("EBI AMOUNT");
Cell cell3 = header.createCell(2);
cell3.setCellValue("PAYING AMOUNT");
Cell cell4 = header.createCell(3);
cell4.setCellValue("RESIDUAL AMOUNT");
Cell cell5 = header.createCell(4);
cell5.setCellValue("BOOKING #");
Cell cell6 = header.createCell(5);
cell6.setCellValue("GUEST NAME");
Cell cell7 = header.createCell(6);
cell7.setCellValue("NOTES/Dispute Reason");
int count = 1;
double total = 0.0;
for(ItemView v : remit)
{
Row row = sheet.createRow(count++);
Cell c1 = row.createCell(0);
c1.setCellValue(v.getDisneyInvoiceNum());
Cell c2 = row.createCell(1);
c2.setCellValue(v.getEbiAmount());
Cell c3 = row.createCell(2);
c3.setCellValue(v.getEbiAmount());
Cell c4 = row.createCell(3);
c4.setCellValue("-");
Cell c5 = row.createCell(4);
c5.setCellValue("");
Cell c6 = row.createCell(5);
c6.setCellValue("");
Cell c7 = row.createCell(6);
c7.setCellValue("");
total+=v.getEbiAmount();
}
Row subTotalRemit = sheet.createRow(sheet.getLastRowNum()+1);
int subTotalRow1 = sheet.getLastRowNum()+1;
Cell t = subTotalRemit.createCell(0);
t.setCellValue("subtotal");
Cell tAmt = subTotalRemit.createCell(1);
tAmt.setCellFormula("SUM(B2:B"+sheet.getLastRowNum()+")");
List<ItemView> past = items.get("prev");
Row prevHead = sheet.createRow(count+6);
Cell remitTitle = prevHead.createCell(0);
remitTitle.setCellValue("Invoices from previous batches");
CellStyle cs = workbook.createCellStyle();
Font f = workbook.createFont();
f.setBoldweight(Font.BOLDWEIGHT_BOLD);
cs.setFont(f);
remitTitle.setCellStyle(cs);
Row prevCols = sheet.createRow(sheet.getLastRowNum()+1);
Cell ph1= prevCols.createCell(0);
ph1.setCellValue("Invoice Number");
Cell ph2= prevCols.createCell(1);
ph2.setCellValue("Invoice Amount");
Cell ph3= prevCols.createCell(2);
ph3.setCellValue("Paying Amount");
Cell ph4= prevCols.createCell(3);
ph4.setCellValue("Residual Amount");
Cell ph5= prevCols.createCell(4);
ph5.setCellValue("Booking #");
Cell ph6= prevCols.createCell(5);
ph6.setCellValue("Guest Name");
Cell ph7= prevCols.createCell(6);
ph7.setCellValue("Notes/Dispute Reason");
int sum1 = sheet.getLastRowNum()+1;
for(ItemView v : past)
{
Row row = sheet.createRow(sheet.getLastRowNum()+1);
Cell c1 = row.createCell(0);
c1.setCellValue(v.getDisneyInvoiceNum());
Cell c2 = row.createCell(1);
c2.setCellValue(v.getEbiAmount());
Cell c3 = row.createCell(2);
c3.setCellValue(v.getAmountPaid());
Cell c4 = row.createCell(3);
c4.setCellValue(v.getDiffEbiApAmt());
Cell c5 = row.createCell(4);
c5.setCellValue("");
Cell c6 = row.createCell(5);
c6.setCellValue("");
Cell c7 = row.createCell(6);
c7.setCellValue(v.getNotes());
}
Row subTotalPrev = sheet.createRow(sheet.getLastRowNum()+1);
Cell tP = subTotalPrev.createCell(1);
tP.setCellValue("subtotal");
Cell tAmtP = subTotalPrev.createCell(2);
tAmtP.setCellFormula("SUM(C"+sum1+":C"+sheet.getLastRowNum()+")");
Row gTotal = sheet.createRow(sheet.getLastRowNum()+1);
Cell gtP = gTotal.createCell(1);
gtP.setCellValue("Total");
Cell gtAmtP = gTotal.createCell(2);
gtAmtP.setCellFormula("B"+subTotalRow1+"+C"+(sheet.getLastRowNum()));
return workbook;
}
This is the code that sends the file to the user:
#RequestMapping(value="generateRemit")
public #ResponseBody String getRemitExcel(
#RequestParam("date") String date,
HttpServletResponse response)
{
ServletOutputStream out;
HSSFWorkbook book = Utils.getExcelRemittance(jdbcBillingDao.getWeeklyRemit(date));
try {
response.setContentType("application/x-ms-excel");
response.setHeader("Content-Disposition","attachment;filename="+date+"Remittance Final.xls");
out = response.getOutputStream();
log.info("writing to output stream");
book.write(out);
out.flush();
log.info("finished writing to output stream");
// return book.toString();
} catch (IOException e) {
e.printStackTrace();
log.info("Error writing to file output stream");
return e.toString();
}
return "success";
}

Fixed it by returning an AbstractExcelView instead of a redirect:
#RequestMapping(value="generateRemit")
protected View remitExcel( #RequestParam("date") String date)
{
final String finalDate = date;
return new AbstractExcelView() {
#Override
protected void buildExcelDocument(Map<String, Object> model, HSSFWorkbook workbook,
HttpServletRequest request, HttpServletResponse response) throws Exception {
response.addHeader("Content-Disposition", "attachment; filename=\""+finalDate+"Disney Remittance Final\"");
HashMap<String,List> items = jdbcBillingDao.getWeeklyRemit(finalDate);
HSSFSheet sheet = workbook.createSheet("Final Remittance");
#SuppressWarnings("unchecked")
List<ItemView> remit = items.get("remit");
Row header = sheet.createRow(0);
Cell cell1 = header.createCell(0);
cell1.setCellValue("DISNEY INVOICE NUM");
Cell cell2 = header.createCell(1);
cell2.setCellValue("EBI AMOUNT");
Cell cell3 = header.createCell(2);
cell3.setCellValue("PAYING AMOUNT");
Cell cell4 = header.createCell(3);
cell4.setCellValue("RESIDUAL AMOUNT");
Cell cell5 = header.createCell(4);
cell5.setCellValue("BOOKING #");
Cell cell6 = header.createCell(5);
cell6.setCellValue("GUEST NAME");
Cell cell7 = header.createCell(6);
cell7.setCellValue("NOTES/Dispute Reason");
//more spreadsheet generation
}
};
}

how to generate the excel file in java using seam

I am using seam 2.2.0 i want to generate the excel dynamically and download that excel file
can anybody have the code please
This is my code
public void getWriteExcelFile() {
try {
HSSFWorkbook hwb = new HSSFWorkbook();
HSSFSheet sheet = hwb.createSheet("new sheet");
HSSFCellStyle cellStyle = setHeaderStyle(hwb);
HSSFRow rowhead1 = sheet.createRow((short) 0);
HSSFCell cell = rowhead1.createCell((short) 4);
cell.setCellStyle(cellStyle);
cell.setCellValue(new HSSFRichTextString(
"Vizag Seaport Private Limited"));
HSSFRow rowdata1 = sheet.createRow(3);
rowdata1.createCell(2).setCellValue(
"Computation Of Storage Charges");
HSSFRow rowhead = sheet.createRow((short) 5);
HSSFRow row = sheet.createRow((short) 5);
HSSFRow rowhead2 = sheet.createRow((short) 6);
HSSFRow row2 = sheet.createRow(6);
HSSFRow rowhead3 = sheet.createRow((short) 7);
HSSFRow row3 = sheet.createRow((short) 7);
HSSFRow rowhead4 = sheet.createRow((short) 8);
HSSFRow row4 = sheet.createRow((short) 8);
HSSFCell cell1 = rowhead.createCell((short) 2);
cell1.setCellStyle(cellStyle);
cell1.setCellValue(new HSSFRichTextString("Party Name:"));
row.createCell((short) 3).setCellValue(
itStorageInvoice.getItImportCustomDetail()
.getIcPartyByBLParty().getPartyName());
HSSFCell cell2 = rowhead.createCell((short) 7);
cell2.setCellStyle(cellStyle);
cell2.setCellValue(new HSSFRichTextString("Free Period:"));
row.createCell((short) 8).setCellValue(
itStorageInvoice.getFreeDays());
System.out.println("-------------------------freedays-"
+ itStorageInvoice.getFreeDays());
HSSFCell cell3 = rowhead2.createCell((short) 2);
cell3.setCellStyle(cellStyle);
cell3.setCellValue(new HSSFRichTextString("Cargo Stacker:"));
row2.createCell((short) 3).setCellValue(
itStorageInvoice.getItBlLdg().getItBlLdgDetails().get(0)
.getIcCommodity().getCommodityCode());
System.out.println("--------------cargostacker---------"
+ itStorageInvoice.getItBlLdg().getItBlLdgDetails().get(0)
.getIcCommodity().getCommodityCode());
HSSFCell cell4 = rowhead2.createCell((short) 7);
cell4.setCellStyle(cellStyle);
cell4.setCellValue(new HSSFRichTextString("Date Of Sailing:"));
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
row2.createCell(8).setCellValue(
sdf.format(itStorageInvoice.getItVoyage().getLastRope()));
System.out.println("--------date--------"
+ itStorageInvoice.getItVoyage().getLastRope());
HSSFCell cell5 = rowhead3.createCell((short) 2);
cell5.setCellStyle(cellStyle);
cell5.setCellValue(new HSSFRichTextString("Vessel:"));
row3.createCell((short) 3).setCellValue(
itStorageInvoice.getItVoyage().getImVessel()
.getVesselName());
HSSFCell cell6 = rowhead3.createCell((short) 7);
cell6.setCellStyle(cellStyle);
cell6.setCellValue(new HSSFRichTextString("BL # :"));
row3.createCell((short) 8).setCellValue(
itStorageInvoice.getItImportCustomDetail().getBlNumber());
HSSFCell cell7 = rowhead4.createCell((short) 2);
cell7.setCellStyle(cellStyle);
cell7.setCellValue(new HSSFRichTextString("Tonnage"));
row4.createCell((short) 3).setCellValue(
itStorageInvoice.getItBlLdg().getItBlLdgDetails().get(0)
.getWeight().doubleValue()
+ " " + "TONNE");
/*
* HSSFCell cell8= rowhead4.createCell((short) 7);
* cell8.setCellStyle(cellStyle); cell8.setCellValue(new
* HSSFRichTextString("Free Time Upto")); row4.createCell((short)
* 8).setCellValue(itStorageInvoice.getItBlLdg().getFreePeriod());
*/
HSSFRow rowhead5 = sheet.createRow((short) 10);
CellStyle style = hwb.createCellStyle();
style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT
.getIndex());
style.setFillPattern(CellStyle.SOLID_FOREGROUND);
HSSFCell cell8 = rowhead5.createCell(2);
cell8.setCellStyle(style);
cell8.setCellValue("DATE");
HSSFCell cell9 = rowhead5.createCell(3);
cell9.setCellStyle(style);
cell9.setCellValue("Bal.Appx.Qty");
HSSFCell cell10 = rowhead5.createCell(4);
cell10.setCellStyle(style);
cell10.setCellValue("RATE");
HSSFCell cell11 = rowhead5.createCell(5);
cell11.setCellStyle(style);
cell11.setCellValue("AMOUNT");
FileOutputStream fileOut = new FileOutputStream(new File(this
.getExcelFileName()));
hwb.write(fileOut);
fileOut.close();
System.out.println("Your excel file has been generated!");
} catch (Exception ex) {
System.out.println(ex);
ex.printStackTrace();
}
}
i am calling from front end like this
but it is not downloaded if it download it shows the size as 0bytes
please provide any help

When you write it to the FileOutputStream, you are just writing it to a file; nothing is sent to the user. You need to write out the contents of the file to the HttpResponse. Check this out: http://www.coolinterview.com/interview/26167/

Seam has built in excel support, have you looked at that? The excel generation is done from your xhtml and is laid out almost exactly like a datatable.
http://docs.jboss.org/seam/2.2.0.CR1/reference/en-US/html/excel.html