Poi problem
i have a problem with jakarta POI.
for (Iterator rows = sheet.rowIterator(); rows.hasNext();) {
row = (HSSFRow) rows.next();
// I want to check whether this row does contain any data or not ?
i tried row!=null to check no data in this row ....but this does not work.
can you suggest any alternative ?
check the number of cells in the row, and the content of each cell.
I've noticed that it sometimes returns empty rows and/or empty cells in rows when you'd expect to get nothing.
Whether due to the way Excel writes things or what I've never bothered to investigate in detail.
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I have a java program which would generate a statistic report (excel - POI) based on a given input file; this input file contains information of the server and these messages are logged using log4j. With the use of DailyRollingFileAppender, the file would roll over every night at 00:00, the problem is when I set up cron job to invoke this project everything at 00:15 and it simply generated a workbook with an empty sheet. The weird thing is that I had hard-coded the sheet name as "A" but the ouputted excel has the filename as the sheet name, does anybody
know what is going on?
Thanks in advance!Can u provide the part of the code which u feel is not working correctly. Cheers
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POI getCellStyle and empty string problem
I'm having a problem getting the style of a cell from and excel input file and setting to an output file.
I also have a problem recognizing blank cells that are not null in the input file here is my code any help would be great.
package Trace;
import java.io.*;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import java.util.StringTokenizer;
import org.apache.poi.poifs.filesystem.*;
import java.lang.Runtime;
public class Converter1 {
private static short bhyvb= 0;
private static short foreground, background;
private static String[][] cellGridOut;
private static int numRows, numColumns, clock;
private static POIFSFileSystem fs;
private static HSSFWorkbook wbin, wbout;
private static HSSFSheet sheetIn, sheetOut;
private static HSSFRow rowIn, rowOut;
private static HSSFCell cellIn, cellIn1, cellOut;
private static FileOutputStream fileOut = null;
private static String rowIterator, rowIterator1;
private static HSSFCellStyle style, style1;
public static void main(String[] args) {
//Take in 2 inputs mandatory, Input Event Trace excel file and Time Interval respectively
if (args.length != 1)System.err.println("Input Excel File");
//Create a new POI file system and HSSF workbook with your excel input file
InputStream input = Converter.class.getResourceAsStream(args[0]);
try{
fs = new POIFSFileSystem(input);
wbin = new HSSFWorkbook(fs);
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wbout = new HSSFWorkbook();
sheetIn = wbin.getSheetAt(0);
numRows = sheetIn.getLastRowNum();//numRows=723
style = wbout.createCellStyle();
//style.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
//style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
//get number of columns
rowIn = sheetIn.getRow(0);
boolean done = false;
int testNullPointer;
numColumns=0;
while(!done){
//System.out.println(ColumnInc);
cellIn = rowIn.getCell((short)numColumns);
numColumns+=1;
try{
testNullPointer = cellIn.getCellType();
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//Create new output file, if it exists delete it
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fileOut.close();
}catch (IOException ioe) {}
public static void converterIt(){
boolean nextDone = false;
boolean nextDone1 = false;
for(int i=0; i<numColumns; i++){
clock =1;
rowIn = sheetIn.getRow(0);
cellIn = rowIn.getCell((short)i);
String getTopRow = cellIn.getStringCellValue();
sheetOut = wbout.createSheet(getTopRow+"_s"+i);
sheetOut.setColumnWidth((short)0, (short)(13 * 256));
sheetOut.setDefaultColumnWidth((short)25);
for(int j=0; j<=numRows; j++){
if(j==0){
rowIn = sheetIn.getRow(j);
cellIn = rowIn.getCell((short)i);
String temp2 = cellIn.getStringCellValue();
rowOut = sheetOut.createRow((short)j);
cellOut = rowOut.createCell((short)j);
cellOut.setCellValue(temp2);
cellOut = rowOut.createCell((short)(j+1));
cellOut.setCellValue("CLOCK");
if(j==1){
rowIn = sheetIn.getRow(j);
cellIn = rowIn.getCell((short)i);
double temp3 = cellIn.getNumericCellValue();
rowOut = sheetOut.createRow((short)j);
cellOut = rowOut.createCell((short)0);
cellOut.setCellValue(temp3);
cellOut = rowOut.createCell((short)1);
cellOut.setCellValue("");
nextDone=false;
nextDone1=false;
if(j>1){
rowIn = sheetIn.getRow(j);
try{
cellIn = rowIn.getCell((short)i);
}catch(NullPointerException npe){
rowIterator = "";
nextDone=true;
if(!nextDone){
try{
rowIterator = cellIn.getStringCellValue();
style = cellIn.getCellStyle();
}catch(NullPointerException npe){}
if(j==2){
rowOut = sheetOut.createRow((short)(clock+1));
cellOut = rowOut.createCell((short)0);
cellOut.setCellValue(rowIterator);
cellOut = rowOut.createCell((short)1);
cellOut.setCellValue(j-1);
clock+=1;
}else{
rowIn = sheetIn.getRow(j-1);
try{
cellIn = rowIn.getCell((short)i);
}catch(NullPointerException npe){
rowIterator1 = "";
nextDone1=true;
if(!nextDone){
try{
rowIterator1 = cellIn.getStringCellValue();
}catch(NullPointerException npe){}
if(rowIterator1!=rowIterator && j>2){
rowOut = sheetOut.createRow((short)clock+1);
cellOut = rowOut.createCell((short)0);
cellOut.setCellValue(rowIterator);
//System.out.println(style);
cellOut.setCellStyle(style);
cellOut = rowOut.createCell((short)1);
cellOut.setCellValue(j-1);
clock+=1;
}//if
}//for
}//for
}//converterIt
}//Converter1 CLASSENDI am not sure about the cell style as it looks like you are doing it right. For the null or blank cells it looks like you are only checking for null not "".
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I have used a jar file "poi-scratchpad-3.2-FINAL-20081019.jar" and "poi-3.2-FINAL.jar" to read text from a .DOC file. I used the "getParagraphText()" function of the class "org.apache.poi.hwpf.extractor.WordExtractor" to get the text.
I am able to get the text in the .DOC file but along with that i am getting the following messages/warnings
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* thread.thread_num_limited: true*
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* net.connect_ex_dom_list:*
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* mmc.sess_pe_act.block_invalid: true*
* jscan.sess_applet_act.stub_out_blocked_applet: true*
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* file.write.in_list:*
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* jscan.session.user_ipaddr: 10.136.64.153*
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* thread.thread_num_max: 8*
* file.destructive.ex_list:*
* file.nondestructive.ex_list:*
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Below the above messages/warnings the data is getting printed. Only the text part of the data is retrieved not the fonts, styles and bullets etc.
Can anyone explain me why I am getting above warnings and how can I remove them. Is it possible to fetch the text depending on delimiters.
Thanks in advance,
Tiijnar
Edited by: tiijnar on May 21, 2009 2:45 AMThe jar files which were used are downloaded from http://jarfinder.com. Those jars created the problem of displaying those messages on console. I downloaded APIs from apache.org and used them in my application. Now my application is running good.
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Hello I am trying to extract text from a ppt file. I am using Coldfusion.
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return Extraction;
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POI HSSF XML to Excel DataFormat Problem
Hiho,
I�ve got the following problem:
I want to create an Excel File from an XML File with POI and DOM4J. This works fine...
Now I want to create some cells with a currency value in it, on which I want to calculate.
Here�s my code:
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HSSFCellStyle intStyle = wb.createCellStyle();
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cell = row.createCell(columnnum);
s = cellelement.attributeValue("numeric");
if (s != null) {
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
if (value != null)
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cell.setCellStyle(intStyle);
...I always get a value with a prefixed apostrophe in Excel, which says that there�s an int value in a string cell (I think). Has anyone an idea whats wrong with my code? Thankshttp://jakarta.apache.org/site/mail2.html#poi
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Problem with method "write" in POI Library.
Best regards, I have the following problem: I have a application in Oracle BPM 10g, that generates a file in Excel. First it upload a template, then query the data base, and storage this data in "POI Object" of type "XSSFWorkbook"; all of the this, at memory.
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I' like that some help me to solve this problem, maybe making any setting in my server.
My Servers are:
Application Server: Oracle WebLogic 10.3.1
and File Server: Oracle Linux. Memoy: 32GB
I show you the code in java:
rsQuery = generarTablas(sStoredProcedure,xmlTableroControl);
InputStream inp = JExcel.cargarPlantillaLectura(sRutaOrigen + sNombreOrigen + ".bck");
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vnHoja = rsQuery.getInt(1);
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outResultado.close();
nOrden ++;
this.rsConsulta = consultar(vsTabla);
if(_getRowCount(this.rsConsulta)>0)
generarHoja(wb, 6, vnHoja);
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File tempFileXLS = File.createTempFile(sNombreDestino + this.sFechaFin + "_", ".xlsx");
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OutputStream out = new FileOutputStream(ruta);
inp.close();
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The problem is when I try to write this object "XSSFWorkbook", in the file(generate a Physical File), the file size is about 35 MB, usgin the method wb.write(out) of the "POI Library", my server spend about 15 minutes, generating blocks.
I' like that some help me to solve this problem, maybe making any setting in my server.
My Servers are:
Application Server: Oracle WebLogic 10.3.1
and File Server: Oracle Linux. Memoy: 32GB
I show you the code in java:
rsQuery = generarTablas(sStoredProcedure,xmlTableroControl);
InputStream inp = JExcel.cargarPlantillaLectura(sRutaOrigen + sNombreOrigen + ".bck");
XSSFWorkbook wb = new XSSFWorkbook(inp); //DESCOMENTAR
wb.setForceFormulaRecalculation(true);
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String vsTabla = "";
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vnHoja = rsQuery.getInt(1);
vsTabla = rsQuery.getString(2);
outResultado = new BufferedWriter (new FileWriter("/tmp/"+String.valueOf(nOrden)+vsTabla+".txt"));
outResultado.write("vsTabla: "+vsTabla+" Hoja : "+String.valueOf(vnHoja)+ "\n"+String.valueOf(Util.getTodayTime()));
outResultado.close();
nOrden ++;
this.rsConsulta = consultar(vsTabla);
if(_getRowCount(this.rsConsulta)>0)
generarHoja(wb, 6, vnHoja);
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inp.close();
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Hi,
I'm trying to deploy an application on Jserv which used the Jakarta's POI API. I placed the Jar file in the server folders and specified the same path in the file Jserv.properties.
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<%@ page
buffer="128"
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org.apache.poi.hssf.usermodel.*,
org.apache.poi.hssf.util.*"
%>
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But when calling the url of the page i get:
Package org.apache.poi.hssf.usermodel not found in import.
Why, it is in the import? Whats wrong there?
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Hava a nice day,
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Forse trovata soluzione, provate così:
Fate il Backup di tutto
Fate triplo-click sulla linea sottostante per selezionarla per intero:
~/Library/Application Support/SyncServices/
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Verrà individuata la cartella della riga sopra contenente un solo file.
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Ciao a voi,ragazzi mio figlio vive in inghilterra e mi ha regalato un iphne 4s da un mese dopo averlo usato per un anno,poi lo ha resettato e spedito.
Io ho inserito una Tim e lo uso senza aver avuto nessun problema.
Il discorso cambia se acquisti un iphone in inghilterra,ma questo vale anche per tutti i paesi,se lo acquisti con un contratto di una compagnia telefonica inglese. A questo punto il telefono accetta solo quella sim,e se lo porti in Italia poi come fai a ricaricarlo. Lo puoi anche fare ma devi usare una carta di credito ma le telefonate ti verrebbero addebitate a te e a chi telefoni,perchè agiresti in roaming. È come se telefonassi dall'Inghilterra.
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ciao a tutti non riesco più a scaricare le app, mi dice che le scarica ma poi non le ho sul telefono... qualcuno ha lo stesso problema grazie???
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Alright folks, I'm having a problem migrating my application from IE 6 to IE 7. We have search functionality in the app that triggers off of javascript calls when a button is pressed in the search. Once the data is retrieved, an export button becomes enabled that allows the user to export those results to Excel using POI. On the back end, we're using struts running in WAS 6. When the results are exported, the action class manually writes the excel workbook to the output stream as below:
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Everything works perfectly in IE 6. In IE 7, however, everything is not so great. The search works to retrieve the results and I can export them to Excel. The problem is that after I export them to Excel, all the Javascript on my page ceases to work. Basically, what I've been able to determine is that upon receiving the Excel document response something is causing the document Javascript variable to become undefined. This causes all my javascript -- things like:
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My background color keeps coming out black rather than the color I set. I'm using POI version 3.5 with Excel 2007.
public void createWorkSheet(String model, String pcfg, String desc)
try{
this.fileout = new FileOutputStream("container-sheet.xls");
this.wb = new HSSFWorkbook();
this.ws = wb.createSheet("Container Worksheet");
int size = 3000;
for(int x = 0; x < 6; x++)
this.ws.setColumnWidth(x, size);
size = (size == 3000) ? 4000 : 3000;
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HSSFCell cellA1 = row1.createCell((short) 0);
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cellA1.setCellStyle(setBold());
HSSFCell cellB1 = row1.createCell((short) 1);
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cellC1.setCellValue("Date:");
cellC1.setCellStyle(setBold());
HSSFCell cellD1 = row1.createCell((short) 3);
cellD1.setCellValue(printDate());
HSSFCell cellE1 = row1.createCell((short) 4);
cellE1.setCellValue("Dock#");
cellE1.setCellStyle(setBold());
HSSFRow row2 = this.ws.createRow((short) 1);
HSSFCell cellA2 = row2.createCell((short) 0);
cellA2.setCellValue("PO#");
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cellA2.setCellStyle(setBoldBackgroundGrey());
this.wb.write(fileout);
fileout.flush();
fileout.close();
}catch(Exception e){
e.printStackTrace();
public HSSFCellStyle setBoldBackgroundGrey()
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HSSFFont font = this.wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
cellStyle.setFont(font);
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cellStyle.setFillBackgroundColor(HSSFColor.AQUA.index);
cellStyle.setFillPattern(cellStyle.SOLID_FOREGROUND);
return cellStyle;
}For any people who stumble on this with the same problem the solution is to use setFillForegroundColor instead of setFillBackgroundColor. I guess if a big black blob in your cell is what your looking for setFillBackgroundColor is for you.
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