How to read both .xsl and .xlsx using POI? - xssf

Question

I have tried POI versions
1.poi-src-3.9-20121203 also with
2.poi-bin-3.10-beta2-20130904
But not able to read .xls file
Getting below error
"
org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]"
Note:I am able to read .xlsx file.

Answer 1

This is for .xlsx
try {
// Get the workbook object for XLSX file
XSSFWorkbook wBook = new XSSFWorkbook(new FileInputStream(path));
// Get first sheet from the workbook
XSSFSheet sheet = (XSSFSheet) wBook.getSheetAt(0);
XSSFRow row;
XSSFCell cell;
// Iterate through each rows from first sheet
Iterator<org.apache.poi.ss.usermodel.Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext()) {
StringBuffer data = new StringBuffer();
row = (XSSFRow) rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
int count = 0;
while (cellIterator.hasNext()) {
count++;
cell = (XSSFCell) cellIterator.next();
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC)
{
data.append(cell.getRawValue()+ ";");
}else if(cell.getCellType() == Cell.CELL_TYPE_BOOLEAN)
{
data.append(cell.getBooleanCellValue() + ";");
} else if(cell.getCellType() == Cell.CELL_TYPE_STRING)
{
data.append(cell.getStringCellValue() + ";");
}
else if(cell.getCellType() == Cell.CELL_TYPE_BLANK)
{
data.append("" + ";");
}
else
{
data.append(cell + ";");
}
}
String finalStr = data.toString().substring(0, (data.length()-1));
System.out.print(finalStr);
}
} catch (Exception ioe) {
ioe.printStackTrace();
}
Thia is for .xls
try {
// Get the workbook object for XLS file
HSSFWorkbook wBook = new HSSFWorkbook(new FileInputStream(path));
// Get first sheet from the workbook
HSSFSheet sheet = (HSSFSheet) wBook.getSheetAt(0);
HSSFRow row;
HSSFCell cell;
// Iterate through each rows from first sheet
Iterator<org.apache.poi.ss.usermodel.Row> rowIterator = sheet.iterator();
while (rowIterator.hasNext()) {
StringBuffer data = new StringBuffer();
row = (HSSFRow) rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
int count = 0;
while (cellIterator.hasNext()) {
count++;
cell = (HSSFCell) cellIterator.next();
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC)
{
data.append(cell.getRawValue()+ ";");
}else if(cell.getCellType() == Cell.CELL_TYPE_BOOLEAN)
{
data.append(cell.getBooleanCellValue() + ";");
} else if(cell.getCellType() == Cell.CELL_TYPE_STRING)
{
data.append(cell.getStringCellValue() + ";");
}
else if(cell.getCellType() == Cell.CELL_TYPE_BLANK)
{
data.append("" + ";");
}
else
{
data.append(cell + ";");
}
}
String finalStr = data.toString().substring(0, (data.length()-1));
System.out.print(finalStr);
}
} catch (Exception ioe) {
ioe.printStackTrace();
}

Answer 2

Try using org.apache.poi.ss.usermodel.Workbook. It can be used for both .xls and .xlsx file
Workbook workbook = null;
if (suffix.equalsIgnoreCase("xls")) {
workbook = (Workbook) new HSSFWorkbook(new POIFSFileSystem(
new FileInputStream(assetFile)));
} else if (suffix.equalsIgnoreCase("xlsx")) {
InputStream inp = new FileInputStream(assetFile);
workbook = new XSSFWorkbook(inp);
inp.close();
}

Answer 3

You need poi-ooxml to read xlsx format too.
Add this Maven dependency
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.15</version>
</dependency>
For xls use
Workbook = new HSSFWorkbook(new FileInputStream(new File("fileName")));
For xlsx use
Workbook = workbook = new XSSFWorkbook(new FileInputStream(new File("fileName")));
If you don't know the file format before reading and sometimes finding .xls or .xlsx file extension may not be always good enough to find the actual file format. In that case do like this
Workbook workbook;
try {
workbook = new HSSFWorkbook(new FileInputStream(new File("fileName")));
System.out.println(" Reading XLS file");
} catch (OfficeXmlFileException e) {
System.out.println(" Reading XLSX file");
workbook = new XSSFWorkbook(new FileInputStream(new File("fileName")));
}
Rest is all the same .xls and .xlsx
An easier way to create workbook by autodetecting the input is
Workbook workbook = WorkbookFactory.create(new File("fileName"));