Cannot import XSSF in Apache POI

Question

I am referencing the version 3.7 of the Apache POI and I am getting a \"cannot be resolved\" error when I do:

import org.apache.poi.xssf.usermodel.XSSFWorkbo         


        

Answer 1

1) imported all the JARS from POI folder 2) Imported all the JARS from ooxml folder which a subdirectory of POI folder 3) Imported all the JARS from lib folder which is a subdirectory of POI folder

String fileName = "C:/File raw.xlsx";
File file = new File(fileName);
FileInputStream fileInputStream;
Workbook workbook = null;
Sheet sheet;
Iterator<Row> rowIterator;
try {
        fileInputStream = new FileInputStream(file);
        String fileExtension = fileName.substring(fileName.indexOf("."));
        System.out.println(fileExtension);
        if(fileExtension.equals(".xls")){
        workbook  = new HSSFWorkbook(new POIFSFileSystem(fileInputStream));
        }
        else if(fileExtension.equals(".xlsx")){
        workbook  = new XSSFWorkbook(fileInputStream);
        }
        else {
        System.out.println("Wrong File Type");
        } 
        FormulaEvaluator evaluator workbook.getCreationHelper().createFormulaEvaluator();
        sheet = workbook.getSheetAt(0);
        rowIterator = sheet.iterator();
        while(rowIterator.hasNext()){
        Row row = rowIterator.next();
        Iterator<Cell> cellIterator = row.cellIterator();
        while (cellIterator.hasNext()){
        Cell cell = cellIterator.next();
        //Check the cell type after evaluating formulae
       //If it is formula cell, it will be evaluated otherwise no change will happen
        switch (evaluator.evaluateInCell(cell).getCellType()){
        case Cell.CELL_TYPE_NUMERIC:
        System.out.print(cell.getNumericCellValue() + " ");
        break;
        case Cell.CELL_TYPE_STRING:
        System.out.print(cell.getStringCellValue() + " ");
        break;
        case Cell.CELL_TYPE_FORMULA:
        Not again
        break;
        case Cell.CELL_TYPE_BLANK:
        break;
        }
}
 System.out.println("\n");
}
//System.out.println(sheet);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e){
e.printStackTrace();
}​

Answer 2

I added below contents in app "build.gradle"

implementation 'org.apache.poi:poi:4.0.0'
implementation 'org.apache.poi:poi-ooxml:4.0.0'

Answer 3

Problem: While importing the " org.apache.poi.xssf.usermodel.XSSFWorkbook"class showing an error in eclipse.

Solution: Use This maven dependency to resolve this problem:

<dependency>
   <groupId>org.apache.poi</groupId>
   <artifactId>poi-ooxml</artifactId>
   <version>3.15</version>
</dependency>

-Hari Krishna Neela

Answer 4

After trying multiple things,what really worked was: 1. downloading "poi" and "poi-ooxml" manually 2.Adding these d/w jars into "Maven Dependencies"

Answer 5

I had the same problem, so I dug through the poi-3.17.jar file and there was no xssf package inside.

I then went through the other files and found xssf int the poi-ooxml-3.17.jar

So it seems the solutions is to add

poi-ooxml-3.17.jar

to your project, as that seems to make it work (for me at least)

Answer 6

I needed the following files for my implementation:

• poi-ooxml-schemas-3.14.20160307.jar
• commons-codec-1.10.jar (this was in "lib" folder of the zip file you get from apache)
• curvesapi-1.03.jar (in "ooxml-lib" folder)
• poi-3.14-20160307.jar
• poi-ooxml-3.14-20160307.jar
• xmlbeans-2.6.0.jar (in "ooxml-lib" folder)

(though honestly, I'm not completely sure they are all necessary...) It's a little confusing because they are packaged that way. I needed to place them manually in my own "lib" folder and then add the references...

Maven always seems to download more than I need, so I always place libaries/dlls and things like that manually.