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i'm using Apache POI(XSSF API) for reading xlsx file.when i tried to read file.i got the following error:
org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]
Code:
public class ReadXLSX
private String filepath;
private XSSFWorkbook workbook;
private static Logger logger=null;
private InputStream resourceAsStream;
public ReadXLSX(String FilePath)
logger=LoggerFactory.getLogger("ReadXLSX");
this.filepath=FilePath;
resourceAsStream = ClassLoader.getSystemResourceAsStream(filepath);
public ReadXLSX(InputStream fileStream)
logger=LoggerFactory.getLogger("ReadXLSX");
this.resourceAsStream=fileStream;
private void loadFile() throws FileNotFoundException, NullObjectFoundException
if(resourceAsStream==null)
throw new FileNotFoundException("Unable to locate give file..");
workbook = new XSSFWorkbook(resourceAsStream);
catch(IOException ex)
}// end loadxlsFile
public String[] getSheetsName()
int totalsheet=0;int i=0;
String[] sheetName=null;
try {
loadFile();
totalsheet=workbook.getNumberOfSheets();
sheetName=new String[totalsheet];
while(i<totalsheet)
sheetName[i]=workbook.getSheetName(i);
} catch (FileNotFoundException ex) {
logger.error(ex);
} catch (NullObjectFoundException ex) {
logger.error(ex);
return sheetName;
public int[] getSheetsIndex()
int totalsheet=0;int i=0;
int[] sheetIndex=null;
String[] sheetname=getSheetsName();
try {
loadFile();
totalsheet=workbook.getNumberOfSheets();
sheetIndex=new int[totalsheet];
while(i<totalsheet)
sheetIndex[i]=workbook.getSheetIndex(sheetname[i]);
} catch (FileNotFoundException ex) {
logger.error(ex);
} catch (NullObjectFoundException ex) {
logger.error(ex);
return sheetIndex;
private boolean validateIndex(int index)
if(index < getSheetsIndex().length && index >=0)
return true;
return false;
public int getNumberOfSheet()
int totalsheet=0;
try {
loadFile();
totalsheet=workbook.getNumberOfSheets();
} catch (FileNotFoundException ex) {
logger.error(ex.getMessage());
} catch (NullObjectFoundException ex) {
logger.error(ex.getMessage());
return totalsheet;
public int getNumberOfColumns(int SheetIndex)
int NO_OF_Column=0;XSSFCell cell = null;
XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
sheet = workbook.getSheetAt(SheetIndex);
Iterator rowIter = sheet.rowIterator();
XSSFRow firstRow = (XSSFRow) rowIter.next();
Iterator cellIter = firstRow.cellIterator();
while(cellIter.hasNext())
cell = (XSSFCell) cellIter.next();
NO_OF_Column++;
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex.getMessage());
return NO_OF_Column;
public int getNumberOfRows(int SheetIndex)
int NO_OF_ROW=0; XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
sheet = workbook.getSheetAt(SheetIndex);
NO_OF_ROW = sheet.getLastRowNum();
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex);}
return NO_OF_ROW;
public String[] getSheetHeader(int SheetIndex)
int noOfColumns = 0;XSSFCell cell = null; int i =0;
String columns[] = null; XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
columns = new String[noOfColumns];
Iterator rowIter = sheet.rowIterator();
XSSFRow Row = (XSSFRow) rowIter.next();
Iterator cellIter = Row.cellIterator();
while(cellIter.hasNext())
cell = (XSSFCell) cellIter.next();
columns[i] = cell.getStringCellValue();
throw new InvalidSheetIndexException("Invalid sheet index.");
catch (Exception ex) {
logger.error(ex);}
return columns;
}//end of method
public String[][] getSheetData(int SheetIndex)
int noOfColumns = 0;XSSFRow row = null;
XSSFCell cell = null;
int i=0;int noOfRows=0;
int j=0;
String[][] data=null; XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
noOfRows =getNumberOfRows(SheetIndex)+1;
data = new String[noOfRows][noOfColumns];
Iterator rowIter = sheet.rowIterator();
while(rowIter.hasNext())
row = (XSSFRow) rowIter.next();
Iterator cellIter = row.cellIterator();
while(cellIter.hasNext())
cell = (XSSFCell) cellIter.next();
if(cell.getCellType() == cell.CELL_TYPE_STRING)
data[i][j] = cell.getStringCellValue();
else if(cell.getCellType() == cell.CELL_TYPE_NUMERIC)
if (HSSFDateUtil.isCellDateFormatted(cell))
String formatCellValue = new DataFormatter().formatCellValue(cell);
data[i][j] =formatCellValue;
data[i][j] = Double.toString(cell.getNumericCellValue());
else if(cell.getCellType() == cell.CELL_TYPE_BOOLEAN)
data[i][j] = Boolean.toString(cell.getBooleanCellValue());
else if(cell.getCellType() == cell.CELL_TYPE_FORMULA)
data[i][j] = cell.getCellFormula().toString();
} // outer while
else throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex);}
return data;
public String[][] getSheetData(int SheetIndex,int noOfRows)
int noOfColumns = 0;
XSSFRow row = null;
XSSFCell cell = null;
int i=0;
int j=0;
String[][] data=null;
XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
data = new String[noOfRows][noOfColumns];
Iterator rowIter = sheet.rowIterator();
while(i<noOfRows)
row = (XSSFRow) rowIter.next();
Iterator cellIter = row.cellIterator();
while(cellIter.hasNext())
cell = (XSSFCell) cellIter.next();
if(cell.getCellType() == cell.CELL_TYPE_STRING)
data[i][j] = cell.getStringCellValue();
else if(cell.getCellType() == cell.CELL_TYPE_NUMERIC)
if (HSSFDateUtil.isCellDateFormatted(cell))
String formatCellValue = new DataFormatter().formatCellValue(cell);
data[i][j] =formatCellValue;
data[i][j] = Double.toString(cell.getNumericCellValue());
} // outer while
}else throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex);
return data;
please help me to sort out this problem.
Thanks
The error is telling you that POI couldn't find a core part of the OOXML file, in this case the content types part. Your file isn't a valid OOXML file, let alone a valid .xlsx file. It is a valid zip file though, otherwise you'd have got an earlier error
Can Excel really load this file? I'd expect it wouldn't be able to, as the exception is most commonly triggered by giving POI a regular .zip file! I suspect your file isn't valid, hence the exception
Update: In Apache POI 3.15 (from beta 1 onwards), there's a more helpful set of Exception messages for the more common causes of this problem. You'll now get more descriptive exceptions in this case, eg ODFNotOfficeXmlFileException and OLE2NotOfficeXmlFileException. This raw form should only ever show up if POI really has no clue what you've given it but knows it's broken or invalid.
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Pretty sure that this exception is thrown when the Excel file is either password protected or the file itself is corrupted. If you just want to read a .xlsx file, try my code below. It's a lot more shorter and easier to read.
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.Sheet;
//.....
static final String excelLoc = "C:/Documents and Settings/Users/Desktop/testing.xlsx";
public static void ReadExcel() {
InputStream inputStream = null;
try {
inputStream = new FileInputStream(new File(excelLoc));
Workbook wb = WorkbookFactory.create(inputStream);
int numberOfSheet = wb.getNumberOfSheets();
for (int i = 0; i < numberOfSheet; i++) {
Sheet sheet = wb.getSheetAt(i);
//.... Customize your code here
// To get sheet name, try -> sheet.getSheetName()
} catch {}
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I was using XSSFWorkbook to read .xls, which resulted in InvalidFormatException. I have to use a more generic Workbook and Sheet to make it work.
This post helped me solved my problem.
You might also see this error if you attempt to parse the same file twice from the same source.
I was parsing the file once to validate and again (from the same InputStream) to process - this produced the above error.
To get round this I parsed the source file into 2 different InputStreams, one to validate and one to process.
Cleaned up the code (commented out the logger mostly) to make it run in my Eclipse environment.
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.*;
public class ReadXLSX {
private String filepath;
private XSSFWorkbook workbook;
// private static Logger logger=null;
private InputStream resourceAsStream;
public ReadXLSX(String filePath) {
// logger=LoggerFactory.getLogger("ReadXLSX");
this.filepath = filePath;
resourceAsStream = ClassLoader.getSystemResourceAsStream(filepath);
public ReadXLSX(InputStream fileStream) {
// logger=LoggerFactory.getLogger("ReadXLSX");
this.resourceAsStream = fileStream;
private void loadFile() throws FileNotFoundException,
NullObjectFoundException {
if (resourceAsStream == null)
throw new FileNotFoundException("Unable to locate give file..");
else {
try {
workbook = new XSSFWorkbook(resourceAsStream);
} catch (IOException ex) {
}// end loadxlsFile
public String[] getSheetsName() {
int totalsheet = 0;
int i = 0;
String[] sheetName = null;
try {
loadFile();
totalsheet = workbook.getNumberOfSheets();
sheetName = new String[totalsheet];
while (i < totalsheet) {
sheetName[i] = workbook.getSheetName(i);
} catch (FileNotFoundException ex) {
// logger.error(ex);
} catch (NullObjectFoundException ex) {
// logger.error(ex);
return sheetName;
public int[] getSheetsIndex() {
int totalsheet = 0;
int i = 0;
int[] sheetIndex = null;
String[] sheetname = getSheetsName();
try {
loadFile();
totalsheet = workbook.getNumberOfSheets();
sheetIndex = new int[totalsheet];
while (i < totalsheet) {
sheetIndex[i] = workbook.getSheetIndex(sheetname[i]);
} catch (FileNotFoundException ex) {
// logger.error(ex);
} catch (NullObjectFoundException ex) {
// logger.error(ex);
return sheetIndex;
private boolean validateIndex(int index) {
if (index < getSheetsIndex().length && index >= 0)
return true;
return false;
public int getNumberOfSheet() {
int totalsheet = 0;
try {
loadFile();
totalsheet = workbook.getNumberOfSheets();
} catch (FileNotFoundException ex) {
// logger.error(ex.getMessage());
} catch (NullObjectFoundException ex) {
// logger.error(ex.getMessage());
return totalsheet;
public int getNumberOfColumns(int SheetIndex) {
int NO_OF_Column = 0;
@SuppressWarnings("unused")
XSSFCell cell = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
Iterator<Row> rowIter = sheet.rowIterator();
XSSFRow firstRow = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = firstRow.cellIterator();
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
NO_OF_Column++;
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex.getMessage());
return NO_OF_Column;
public int getNumberOfRows(int SheetIndex) {
int NO_OF_ROW = 0;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
NO_OF_ROW = sheet.getLastRowNum();
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex);
return NO_OF_ROW;
public String[] getSheetHeader(int SheetIndex) {
int noOfColumns = 0;
XSSFCell cell = null;
int i = 0;
String columns[] = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
columns = new String[noOfColumns];
Iterator<Row> rowIter = sheet.rowIterator();
XSSFRow Row = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = Row.cellIterator();
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
columns[i] = cell.getStringCellValue();
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
catch (Exception ex) {
// logger.error(ex);
return columns;
}// end of method
public String[][] getSheetData(int SheetIndex) {
int noOfColumns = 0;
XSSFRow row = null;
XSSFCell cell = null;
int i = 0;
int noOfRows = 0;
int j = 0;
String[][] data = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
noOfRows = getNumberOfRows(SheetIndex) + 1;
data = new String[noOfRows][noOfColumns];
Iterator<Row> rowIter = sheet.rowIterator();
while (rowIter.hasNext()) {
row = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = row.cellIterator();
j = 0;
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
data[i][j] = cell.getStringCellValue();
} else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(cell)) {
String formatCellValue = new DataFormatter()
.formatCellValue(cell);
data[i][j] = formatCellValue;
} else {
data[i][j] = Double.toString(cell
.getNumericCellValue());
} else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
data[i][j] = Boolean.toString(cell
.getBooleanCellValue());
else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) {
data[i][j] = cell.getCellFormula().toString();
} // outer while
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex);
return data;
public String[][] getSheetData(int SheetIndex, int noOfRows) {
int noOfColumns = 0;
XSSFRow row = null;
XSSFCell cell = null;
int i = 0;
int j = 0;
String[][] data = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
data = new String[noOfRows][noOfColumns];
Iterator<Row> rowIter = sheet.rowIterator();
while (i < noOfRows) {
row = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = row.cellIterator();
j = 0;
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
data[i][j] = cell.getStringCellValue();
} else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(cell)) {
String formatCellValue = new DataFormatter()
.formatCellValue(cell);
data[i][j] = formatCellValue;
} else {
data[i][j] = Double.toString(cell
.getNumericCellValue());
} // outer while
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex);
return data;
Created this little testcode:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class ReadXLSXTest {
* @param args
* @throws FileNotFoundException
public static void main(String[] args) throws FileNotFoundException {
// TODO Auto-generated method stub
ReadXLSX test = new ReadXLSX(new FileInputStream(new File("./sample.xlsx")));
System.out.println(test.getSheetsName());
System.out.println(test.getNumberOfSheet());
All this ran like a charm, so my guess is you have an XLSX file that is 'corrupt' in one way or another. Try testing with other data.
Cheers,
I get the same exception for .xls file, but after I open the file and save it as xlsx file , the below code works:
try(InputStream is =file.getInputStream()){
XSSFWorkbook workbook = new XSSFWorkbook(is);
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