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Apache POI org.apache.poi.xssf.streaming.SXSSFWorkbook generating excel report with missing header names

I am using apache poi library to dynamically generate excel report. Previously I used HSSFWorkbook class to create excel sheet.when I generated an excel report with a large number of records I got out of memory error issue due to Garbage collection overload.due to this reason I switched org.apache.poi.xssf.streaming.SXSSFWorkbook and which resolved the previous outofmemory issue.
Here is my code for generating excel report.
public Workbook getReport(String yearLevels, List<User> userList, Map<Long, Date> map) {
Workbook wb = new SXSSFWorkbook (100);
try {
CellStyle cellStyle1;
CellStyle cellStyle2;
Sheet sheet;
HSSFRichTextString cellValue;
Row row;
Cell cell;
Font font1;
Font font2;
DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");
sheet = wb.createSheet("User Details Report");
sheet.setColumnWidth(0, 7000);
sheet.setColumnWidth(1, 4000);
sheet.setColumnWidth(2, 4000);
sheet.setColumnWidth(3, 4000);
sheet.setColumnWidth(4, 3000);
sheet.setColumnWidth(5, 9000);
font1 = wb.createFont();
font1.setFontHeightInPoints((short) 10);
font1.setFontName("Arial");
font1.setBold(true);
font2 = wb.createFont();
font2.setFontHeightInPoints((short) 10);
font2.setFontName("Arial");
cellStyle1 = wb.createCellStyle();
cellStyle1.setFont(font1);
cellStyle2 = wb.createCellStyle();
cellStyle2.setFont(font2);
int rowNumber = 0;
CellStyle cellStyle3 = wb.createCellStyle();
cellStyle3.setFont(font1);
cellStyle3.setAlignment(HorizontalAlignment.CENTER);
row = sheet.createRow(rowNumber);
int cellValueCount=0;
Cell userName = row.getCell(cellValueCount, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
userName.setCellValue("Username");
userName.setCellStyle(cellStyle3);
Cell firstName = row.getCell(cellValueCount++, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
firstName.setCellValue("First Name");
firstName.setCellStyle(cellStyle3);
Cell lastName = row.getCell(cellValueCount++, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
lastName.setCellValue("Last Name");
lastName.setCellStyle(cellStyle3);
Cell yearLevel = row.getCell(cellValueCount++, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
yearLevel.setCellValue("Year Level");
yearLevel.setCellStyle(cellStyle3);
Cell paidStatus = row.getCell(cellValueCount++, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
paidStatus.setCellValue("Student No");
paidStatus.setCellStyle(cellStyle3);
Cell dateTitleFulfilled = row.getCell(cellValueCount++, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
dateTitleFulfilled.setCellValue("Date Fulfilled");
dateTitleFulfilled.setCellStyle(cellStyle3);
CellStyle cellStyle4 = wb.createCellStyle();
cellStyle4.setFont(font2);
cellStyle4.setAlignment(HorizontalAlignment.CENTER);
int columnNumber = 0;
for (User user : userList) {
columnNumber = 0;
rowNumber++;
row = sheet.createRow(rowNumber);
cell = row.getCell(columnNumber, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cellValue = new HSSFRichTextString(user.getPrincipalId());
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
columnNumber++;
cell = row.getCell(columnNumber, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cellValue = new HSSFRichTextString(user.getFirstName());
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
columnNumber++;
cell = row.getCell(columnNumber, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cellValue = new HSSFRichTextString(user.getLastName());
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
columnNumber++;
/*cell = row.getCell(columnNumber, Row.CREATE_NULL_AS_BLANK);
cellValue = new HSSFRichTextString(user.getStudentNumber());
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
columnNumber++;*/
cell = row.getCell(columnNumber, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cellValue = new HSSFRichTextString(Integer.toString(user.getYearLevel()));
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
columnNumber++;
cell = row.getCell(columnNumber, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
cellValue = new HSSFRichTextString(user.getJppFulfillmentTags());
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
columnNumber++;
cell = row.getCell(columnNumber, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
Date date = map.get(user.getId());
if (date != null) {
String eventDate = df1.format(date);
cellValue = new HSSFRichTextString(eventDate);
} else {
cellValue = new HSSFRichTextString("");
}
cell.setCellValue(cellValue);
cell.setCellStyle(cellStyle4);
}
} catch (Exception e) {
logger.error("ReportService::getReport Error Report Creation ", e);
}
return wb;
}
ReportService reportService = new ReportService();
Workbook wb = reportService.getReport(yearLevelsString, userList, map);
OutputStream out = response.getOutputStream();
if (request.getParameter("exportAs") == null || !request.getParameter("exportAs").equalsIgnoreCase("xls")) {
response.setHeader("Content-Disposition", "attachment;filename=User_Report.csv");
CSVPrinter csvPrinter = reportService.writeWorkbookAsCSVToOutputStream(wb, out);
csvPrinter.flush();
csvPrinter.close();
} else {
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment;filename=User_Report.xls");
wb.write(out);
out.close();
}
public CSVPrinter writeWorkbookAsCSVToOutputStream(Workbook workbook, OutputStream out) throws IOException {
CSVPrinter csvPrinter = new CSVPrinter(new OutputStreamWriter(out), CSVFormat.DEFAULT);
try {
if (workbook != null) {
Sheet sheet = workbook.getSheetAt(0);
Iterator<Row> rowIterator = sheet.rowIterator();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
csvPrinter.print(cell.getStringCellValue());
}
csvPrinter.println();
}
}
} catch (Exception e) {
logger.error("ReportService::writeWorkbookAsCSVToOutputStream Error Report Creation ", e);
}
return csvPrinter;
}
After this implementation when I download excel report with more than 100 records I am getting report without header names.
but when I download excel report with less than 100 records I am getting report with cell header name without issue.
Why I the excel report is generating without header names when excel report having more than 100 records?

How to hide particular column in pivot table not in sheet?

Text above pivot I want to hide one column in pivot table. If I remove that column then the functionality gets 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 without effecting functionality

You can hide a column using setColumnHidden(int columnIndex, boolean hidden) where the value of columnIndex for column A is 0. e.g. sheet.setColumnHidden(1, true) will hide column B.
Another way to hide a column is by using setColumnWidth(int columnIndex, int width) e.g. sheet.setColumnWidth(1, 0) will also do the same thing as above.
I would still use the first method which is specific to this purpose.
EDIT - added the following clarification to illustrate how it is valid for pivot table:
Note that this works irrespective of whether you have normal cells or you have a pivot table e.g. in the following program, sheet.setColumnHidden(9, true) will hide the column J (which has the column label, Average).
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataConsolidateFunction;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.util.AreaReference;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.xssf.usermodel.XSSFPivotTable;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class CreatePivotTable {
public static void main(String[] args) throws FileNotFoundException, IOException, InvalidFormatException {
XSSFWorkbook wb = new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet();
// Create some data to build the pivot table on
setCellData(sheet);
AreaReference source = new AreaReference("A1:D4", SpreadsheetVersion.EXCEL2007);
CellReference position = new CellReference("H5");
// Create a pivot table on this sheet, with H5 as the top-left cell..
// The pivot table's data source is on the same sheet in A1:D4
XSSFPivotTable pivotTable = sheet.createPivotTable(source, position);
// Configure the pivot table
// Use first column as row label
pivotTable.addRowLabel(0);
// Sum up the second column
pivotTable.addColumnLabel(DataConsolidateFunction.SUM, 1);
// Set the third column as filter
pivotTable.addColumnLabel(DataConsolidateFunction.AVERAGE, 2);
// Add filter on forth column
pivotTable.addReportFilter(3);
sheet.setColumnHidden(9, true);
FileOutputStream fileOut = new FileOutputStream("ooxml-pivottable.xlsx");
wb.write(fileOut);
}
public static void setCellData(XSSFSheet sheet) {
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("#");
Cell cell13 = row1.createCell(2);
cell13.setCellValue("%");
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(90);
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");
}
}
Note: I have modified the program given at http://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/xssf/usermodel/examples/CreatePivotTable.java to illustrate the solution.

Create Excel with Java format text

When I download Excel, I get cells with format Numbers I need format text en all Cells.
try {
XSSFSheet sheet = workbook.createSheet(eyelash);
XSSFFont font = workbook.createFont();
font.setColor(HSSFColor.WHITE.index);
XSSFCellStyle style = workbook.createCellStyle();
style.setFont(font);
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setFillForegroundColor(HSSFColor.RED.index);
String[] header = { "name","surname"};
XSSFRow rowhead = sheet.createRow((short) 0);
XSSFCell cell;
int cellnum = 0;
for (int i = 0; i < header.length; i++) {
cell = rowhead.createCell(cellnum);
cell.setCellValue(header[i]);
cell.setCellStyle(style);
cell.setCellType(XSSFCell.CELL_TYPE_STRING);
cellnum++;
}
if (data) {
int myRowData = 1;
XSSFRow row = sheet.createRow((short) myRowData);
ArrayList<GasNomination> list = this.select();
for (int i = 0; i < list.size(); i++) {
row.createCell(0).setCellValue(list.get(i).name());
row.createCell(1).setCellValue(list.get(i).surname());
myRowData++;
row = sheet.createRow((short) myRowData);
}
}
} catch (Exception ex) {
}
I tried cell.setCellType(XSSFCell.CELL_TYPE_STRING);
But when I open my Excel I see formatcell type numeric ...

You can use DataFormatter,
System.out.println("started");
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.createSheet();
XSSFRow row = sheet.createRow(0);
XSSFCell cell = row.createCell(0);
cell.setCellValue(3.14159);
cell.setCellType(XSSFCell.CELL_TYPE_STRING);
XSSFDataFormat format = workbook.createDataFormat();
XSSFCellStyle style = workbook.createCellStyle();
style.setDataFormat(format.getFormat("Text"));
cell.setCellStyle(style);
workbook.write(new FileOutputStream("Test.xlsx"));
System.out.println("finished");

set column format type as date or time using HSSFSheet

I want to set my column Mobile_Time as time / Date time type column.
I have tried
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
DAO d0 = new DAO();
Map<String, String> AllUsermap = new HashMap<String, String>();
AllUsermap = d0.colleagueMap(Integer.parseInt(request.getParameter("lid")), request.getParameter("ltype"));
String date = request.getParameter("date");
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition",
"attachment; filename=All Employees Tracking Report [Date]:" + date + ".xls");
Workbook workbook = new HSSFWorkbook();
Font font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
CellStyle HeaderStyle = workbook.createCellStyle();
HeaderStyle.setFont(font);
for (String userK : AllUsermap.keySet()) {
String userinfo[] = userK.split("-");
String userinfoval[] = AllUsermap.get(userK).split("-");
if (userinfo.length == 2 && userinfoval.length == 3) {
Sheet sheet = workbook.createSheet(userinfoval[0]);
// header
Row row = sheet.createRow(0);
Cell serial = row.createCell(0);
serial.setCellValue("#");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(1);
serial.setCellValue("LOCATION");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(2);
serial.setCellValue("DISTANCE");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(3);
serial.setCellValue("BATTERY");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(4);
serial.setCellValue("SPEED");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(5);
serial.setCellValue("GPS_ACCURACY");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(6);
serial.setCellValue("STATUS");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(7);
serial.setCellType(1);
serial.setCellValue("MOBILE_TIME");
serial.setCellStyle(HeaderStyle);
serial = row.createCell(8);
serial.setCellValue("SPEED");
serial.setCellStyle(HeaderStyle);
// End Header
List<DailyReport> adr = new ArrayList<DailyReport>();
adr = d0.seletspecificdailyreport(Integer.parseInt(userinfo[0]), date, userinfo[1]);
if (adr.size() > 0) {
List<DailyReportDetails> adlrd = new ArrayList<DailyReportDetails>();
adlrd = d0.seletdailyreportdetails(adr.get(0).getIdDailyReport());
int i = 1;
for (DailyReportDetails drd : adlrd) {
row = sheet.createRow(i);
Cell cell = row.createCell(0);
cell.setCellValue(i);
cell = row.createCell(1);
cell.setCellValue(drd.getLocation());
cell = row.createCell(2);
cell.setCellValue(drd.getDistance());
cell = row.createCell(3);
cell.setCellValue(drd.getBattery());
cell = row.createCell(4);
cell.setCellValue(drd.getSpeed());
cell = row.createCell(5);
cell.setCellValue(drd.getAccuracy());
cell = row.createCell(6);
cell.setCellValue(drd.getOffline() == 1 ? "ONLINE" : "OFFLINE");
cell = row.createCell(7);
cell.setCellValue(drd.getMobiletime());
cell = row.createCell(8);
cell.setCellValue(userinfoval[2]);
i++;
}
}
}
}
workbook.write(response.getOutputStream()); // Write workbook to
// response.
workbook.close();
}
The upper servelet writing xcel properly but Mobile time is not in time or date format in xcel
I also have tried to put line for mobile_time column serial .
serial = row.createCell(7);
serial.setCellType(HSSFCell.LAST_COLUMN_NUMBER);
serial.setCellValue("MOBILE_TIME");
serial.setCellStyle(HeaderStyle);
and also tried the below line at the of generating row
cell = row.createCell(7);
try {
cell.setCellValue(new SimpleDateFormat("HH:mm:ss").parse(drd.getMobiletime()));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
But still mobile_time column is in character format .What is the proper solution?

You can do something like this :
Workbook wb = new HSSFWorkbook();
//Workbook wb = new XSSFWorkbook();
CreationHelper createHelper = wb.getCreationHelper();
Sheet sheet = wb.createSheet("new sheet");
// Create a row and put some cells in it. Rows are 0 based.
Row row = sheet.createRow(0);
// Create a cell and put a date value in it. The first cell is not styled
// as a date.
Cell cell = row.createCell(0);
cell.setCellValue(new Date());
// we style the second cell as a date (and time). It is important to
// create a new cell style from the workbook otherwise you can end up
// modifying the built in style and effecting not only this cell but other cells.
CellStyle cellStyle = wb.createCellStyle();
cellStyle.setDataFormat(
createHelper.createDataFormat().getFormat("m/d/yy h:mm"));
cell = row.createCell(1);
cell.setCellValue(new Date());
cell.setCellStyle(cellStyle);
//you can also set date as java.util.Calendar
cell = row.createCell(2);
cell.setCellValue(Calendar.getInstance());
cell.setCellStyle(cellStyle);
// Write the output to a file
FileOutputStream fileOut = new FileOutputStream("workbook.xls");
wb.write(fileOut);
fileOut.close();

File data may have been lost excel apache poi

This question has been asked before but my issue is definitely different. I ran my program on two different machines, both mac and used Microsoft Excel mac version to open the Excel file. Oddly one machine works perfectly and the other gives me a "file data may have been lost". I pulled the program from my git account and confirmed it is the most recent version and I cleared my cache in my browser, but it is still giving me the same error before displaying a blank excel worksheet.
JobOrderGenerator
public class JobOrderGenerator {
private OutputStream out;
private int sheetNumber = 0;
private HSSFWorkbook workbook;
private HSSFSheet sheet;
#Inject
HttpServletResponse response;
#Inject
GenerateTemplate generateTemplate;
public JobOrderGenerator(List<ShopOrder> shopOrder, HttpServletResponse response)
throws InvalidFormatException, IOException {
this.response = response;
createWorkBook();
createJobOrder(shopOrder);
createFile();
}
private void createWorkBook() {
workbook = new HSSFWorkbook();
}
private void createSheet(){
//String safeName = WorkbookUtil.createSafeSheetName(sheetName);
sheet = workbook.createSheet();
generatShopOrderTemplate();
}
private void generatShopOrderTemplate(){
generateTemplate = new GenerateTemplate();
generateTemplate.applyTemplate(workbook, sheet);
}
private void createJobOrder(List<ShopOrder> order) throws InvalidFormatException,
IOException {
//get current date time with Date()
Date todaysDate = new Date();
for(ShopOrder shopOrder: order){
writeToSpecificCell(1, 1, sheetNumber, shopOrder.getPo_number()); // Po Number
writeToSpecificCell(6, 3, sheetNumber, shopOrder.getPart_number()); // Part Number
LocalDate date = shopOrder.getPo_due_date();
String dateToString = date.toString();
writeToSpecificCell(5, 7, sheetNumber, dateToString); // Due_Date
writeToSpecificCell(2, 1, sheetNumber, todaysDate.toString());//todays date
writeToSpecificCell(6, 7, sheetNumber,
Integer.toString(shopOrder.getPart_quantity())); // Part Quantity
//writeToSpecificCell(1,2,sheetNumber, shopOrder.getMaterial); //Material
writeToSpecificCell(7, 3, sheetNumber, shopOrder.getPart_decription()); // Part Description
writeToSpecificCell(5,3,sheetNumber, shopOrder.getCustomer_name()); //Customer
writeToSpecificCell(10, 1, sheetNumber, shopOrder.getMachine_number()); // Machine
writeToSpecificCell(7, 7, sheetNumber, shopOrder.getMaterial_number()); // Material Number
sheetNumber++;
}
}
private void writeToSpecificCell(int rowNumber, int cellNumber, int sheetNumber,
String value) throws InvalidFormatException {
createSheet();
try {
sheet = workbook.getSheetAt(sheetNumber);
HSSFRow row = sheet.getRow(rowNumber);
HSSFCell cell = row.createCell(cellNumber);
if (cell == null) {
cell = row.createCell(cellNumber);
}
cell.setCellType(Cell.CELL_TYPE_STRING);
cell.setCellValue(value);
} catch (NullPointerException ex) {
System.out.println("writeToSpecificCell class is returning null ");
ex.getStackTrace();
}
}
private void createFile(){
// Set Excel File Name
String fileName = "JobTicket.xls";
// Set HTT
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment;filename="
+ fileName);
try {
out = response.getOutputStream();
workbook.write(out);
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Template Creator
#Named
public class GenerateTemplate {
public HSSFWorkbook applyTemplate(HSSFWorkbook workbook, HSSFSheet sheet) {
//total rows to create (starts at 0)
int totalRows = 26;//27 total rows
sheet.setColumnWidth(1, 4300);
sheet.setColumnWidth(8, 3000);
//create sheet rows
for(int i = 0; i < totalRows; i++) {
sheet.createRow(i);
}
//Fonts
//Bold Header Font
HSSFFont boldHeaderFont = workbook.createFont();
boldHeaderFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
boldHeaderFont.setFontName("Broadway");
boldHeaderFont.setItalic(true);
boldHeaderFont.setFontHeightInPoints((short) 16);
//Default Font
HSSFFont defaultFont = workbook.createFont();
defaultFont.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
//Bold Font
HSSFFont boldFont = workbook.createFont();
boldFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
//Bold blue Font
HSSFFont boldBlueFont = workbook.createFont();
boldBlueFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
boldBlueFont.setColor(HSSFColor.BLUE.index);
//Bold blue Tall Font
HSSFFont boldBlueTallFont = workbook.createFont();
boldBlueTallFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
boldBlueTallFont.setColor(HSSFColor.BLUE.index);
boldBlueTallFont.setFontHeightInPoints((short) 14);
//Styles
//Bold Header
HSSFCellStyle boldHeaderStyle = workbook.createCellStyle();
boldHeaderStyle.setFont(boldHeaderFont);
boldHeaderStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//Center
HSSFCellStyle centerStyle = workbook.createCellStyle();
centerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//Bold
HSSFCellStyle boldStyle = workbook.createCellStyle();
boldStyle.setFont(boldFont);
//Grey Background fill
HSSFCellStyle greyFillStyle = workbook.createCellStyle();
greyFillStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
greyFillStyle.setFillPattern(CellStyle.SOLID_FOREGROUND);
//Centered Bold Blue Style
HSSFCellStyle centeredBoldBlueStyle = workbook.createCellStyle();
centeredBoldBlueStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
centeredBoldBlueStyle.setFont(boldBlueFont);
//Centered Bold Blue Tall Style
HSSFCellStyle centeredBoldBlueTallStyle = workbook.createCellStyle();
centeredBoldBlueTallStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
centeredBoldBlueTallStyle.setFont(boldBlueTallFont);
//Merged Cells
//Name and Address merged
sheet.addMergedRegion(new CellRangeAddress(0,0,2,8));
sheet.addMergedRegion(new CellRangeAddress(1,1,2,8));
sheet.addMergedRegion(new CellRangeAddress(2,2,2,8));
sheet.addMergedRegion(new CellRangeAddress(3,3,2,8));
sheet.addMergedRegion(new CellRangeAddress(4,4,2,8));
//Customer merged
sheet.addMergedRegion(new CellRangeAddress(5,5,3,5));
//Part Merged
sheet.addMergedRegion(new CellRangeAddress(6,6,3,5));
//Create template cells
//column 1
sheet.createRow(0).createCell(0).setCellValue("Job No.");
sheet.createRow(1).createCell(0).setCellValue("P.O. No.");
sheet.createRow(2).createCell(0).setCellValue("Date");
HSSFRow row;
HSSFCell cell;
//Name and Address Info
row = sheet.getRow(1);
cell = row.createCell(2);
cell.setCellValue("Hillcrest Tool & Die");
cell.setCellStyle(boldHeaderStyle);
row = sheet.getRow(2);
cell = row.createCell(2);
cell.setCellValue("807 Jones Rd, Paragould AR");
cell.setCellStyle(centerStyle);
row = sheet.getRow(3);
cell = row.createCell(2);
cell.setCellValue("(870)573-6881");
cell.setCellStyle(centerStyle);
//Grey Background Cells
row = sheet.getRow(0);
cell = row.createCell(2);
cell.setCellStyle(greyFillStyle);
row = sheet.getRow(4);
cell = row.createCell(2);
cell.setCellStyle(greyFillStyle);
row = sheet.getRow(8);
cell = row.createCell(0);
cell.setCellStyle(greyFillStyle);
row = sheet.getRow(8);
cell = row.createCell(1);
cell.setCellStyle(greyFillStyle);
//Customer centered
row = sheet.getRow(5);
cell = row.createCell(3);
cell.setCellStyle(centeredBoldBlueStyle);
//part centered
row = sheet.getRow(6);
cell = row.createCell(3);
cell.setCellStyle(centeredBoldBlueTallStyle);
sheet.getRow(5).createCell(2).setCellValue("Customer");
sheet.getRow(5).createCell(6).setCellValue("Due Date");
sheet.getRow(6).createCell(2).setCellValue("Part No.");
sheet.getRow(6).createCell(6).setCellValue("Quantity");
sheet.createRow(7).createCell(0).setCellValue("PARTIAL");
sheet.getRow(7).createCell(2).setCellValue("Part Description");
sheet.getRow(7).createCell(6).setCellValue("Material");
sheet.getRow(9).createCell(3).setCellValue("Initials");
sheet.getRow(9).createCell(4).setCellValue("Date");
sheet.getRow(9).createCell(5).setCellValue("Operation");
sheet.getRow(9).createCell(6).setCellValue("Qty");
sheet.getRow(9).createCell(7).setCellValue("Total");
sheet.getRow(9).createCell(8).setCellValue("Hours");
sheet.createRow(10).createCell(0).setCellValue("Machine");
sheet.getRow(10).createCell(1).setCellValue("LASER / PLASMA");
sheet.getRow(17).createCell(1).setCellValue("BEND / MILL");
return workbook;
}
}

Change everything from HSSFWorkbook to XSSFWorkbook. Because HSSFWorkbook object creates XLS which doesn't support generating negative values and also it's old so use XSSFWorkbook which creates XLSX.