Java中的Apache POI引起麻烦（XSSFWorkbook）

Question

I am actually trying to read an XLS file with Apache POI, but my code somehow doesn't work. IntelliJ tells me that, on line 28, creating the XSSFWorkbook causes the trouble. Would you have a brief look and maybe answer if you are in this?

package Parse;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.File;
import java.io.FileInputStream;
import java.util.Iterator;
public class poi {

    public static void main(String[] args) {
        try {
            FileInputStream file = new FileInputStream(new File("C:\\Users\\jd\\Desktop\\test\\VW_XML\\in_xls.xlsx"));

            //Create workbook instance
            XSSFWorkbook workbook = new XSSFWorkbook(file);

            //read sheet
            XSSFSheet sheet = workbook.getSheetAt(0);

            //iterate rows
            Iterator<Row> rowIterator = sheet.iterator();
            while (rowIterator.hasNext()) {
                Row row = rowIterator.next();
                Iterator<Cell> cellIterator = row.cellIterator();

                // for each row all columns
                while (cellIterator.hasNext()) {
                    Cell cell = cellIterator.next();

                    //check cell type
                    switch (cell.getCellType()) {
                        case Cell.CELL_TYPE_NUMERIC:
                            System.out.print(cell.getNumericCellValue() + "t");
                            break;
                        case Cell.CELL_TYPE_STRING:
                            System.out.print(cell.getStringCellValue() + "t");
                            break;
                    }
                }
                System.out.println("");

            }
            file.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Answer 1

How do you add POI to your project? Do you use Maven or something like that? You might be missing some dependencies.

Cut out from my dependency:tree :

org.apache.poi:poi-ooxml:jar:3.10-FINAL:compile
 +- org.apache.poi:poi:jar:3.10-FINAL:compile
 |  \- commons-codec:commons-codec:jar:1.5:compile
 \- org.apache.poi:poi-ooxml-schemas:jar:3.10-FINAL:compile
    \- org.apache.xmlbeans:xmlbeans:jar:2.3.0:compile
        \- stax:stax-api:jar:1.0.1:compile

Do you have all that jars in your classpath?

Answer 2

Place all the following jars in BuildPath and run!

Answer 3

How to read excel(.xlsx) in java using poi?

this link and your comments helped me a lot.

i needed to add more jar files to my project.

poi-3.9.jar poi-ooxml-3.9.jar poi-ooxml-schemas-3.7.jar xmlbeans-2.3.0.jar dom4j-1.6.1.jar

ty a lot for replys and have a nice day.

Answer 4

you need to add these jar files ::

CLASSPATH:

“C:\\poi-3.9\\poi-3.9-20121203.jar;”

“C:\\poi-3.9\\poi-ooxml-3.9-20121203.jar;”

“C:\\poi-3.9\\poi-ooxml-schemas-3.9-20121203.jar;”

“C:\\poi-3.9\\ooxml-lib\\dom4j-1.6.1.jar;”

“C:\\poi-3.9\\ooxml-lib\\xmlbeans-2.3.0.jar;”

Click the below link for the above jar files:: http://www.java2s.com/Open-Source/Java_Free_Code/Database/Download_wca_workbook_assistant_Free_Java_Code.htm

Best of Luck..