Reading excel file using apache poi in scala - excel

Question

I'm trying to read a excel file using poi SXSSF. For some reason sheet.rowIterator is returning empty iterator even though there are rows in the sheet. Here is the code I have
import java.io.File
import org.apache.poi.xssf.streaming.SXSSFWorkbook
import org.apache.poi.xssf.usermodel.XSSFWorkbook
import scala.collection.JavaConverters._
class ExcelReader {
final val fileName = "c:\\temp\\data-200.xlsx"
def read(): Iterator[Contact] = {
val file = new File(fileName)
val workBook = new SXSSFWorkbook(new XSSFWorkbook(file),100)
val sheet = workBook.getSheetAt(0) //this works gets sheet name
Console.println(s"Sheet Name: ${sheet.getSheetName()}")
val rowItr = sheet.rowIterator().asScala // this is empty iterator
for (e <- rowItr) yield Contact(e.getCell(0).getStringCellValue(),
e.getCell(1).getStringCellValue(),
e.getCell(2).getStringCellValue(),
e.getCell(3).getStringCellValue(),
e.getCell(4).getStringCellValue())
}
}
Not sure what I'm doing wrong.

Answer 1

Here is a simple example of reading excel file that I have tried.
val myFile = new File("/home/sakoirala/Downloads/eu-historical-price-series_en.xls")
val fis = new FileInputStream(myFile)
val myWorkbook = new HSSFWorkbook(fis)
val mySheet = myWorkbook.getSheetAt(0)
val rowIterator = mySheet.iterator()
while(rowIterator.hasNext){
val row = rowIterator.next()
val cellIterator = row.cellIterator()
while(cellIterator.hasNext) {
val cell = cellIterator.next()
cell.getCellType match {
case Cell.CELL_TYPE_STRING => {
print(cell.getStringCellValue + "\t")
}
case Cell.CELL_TYPE_NUMERIC => {
print(cell.getNumericCellValue + "\t")
}
case Cell.CELL_TYPE_BOOLEAN => {
print(cell.getBooleanCellValue + "\t")
}
case Cell.CELL_TYPE_BLANK => {
print("null" + "\t")
}
case _ => throw new RuntimeException(" this error occured when reading ")
// case Cell.CELL_TYPE_FORMULA => {print(cell.getF + "\t")}
}
}
println("")
}
Hope this helps!