Question

我想使用Apache POI从excel表中读取所有单元格值并将其存储到一维字符串数组中。是否可以逐行读取excel中的数据并从每个单元格中提取值？

请帮我解决这个问题。

由于

Answer 1

import java.io.FileInputStream;
import java.util.Iterator;
import java.util.Vector;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;

public class ReadExcelFile {

public static void main( String [] args ) {

    String fileName="C:\\temp\\testPOI.xls";
    //Read an Excel File and Store in a Vector
    Vector dataHolder=readExcelFile(fileName);
    //Print the data read
    printCellDataToConsole(dataHolder);
}
public static Vector readExcelFile(String fileName)
{
    /** --Define a Vector
        --Holds Vectors Of Cells
     */
    Vector cellVectorHolder = new Vector();

    try{
    /** Creating Input Stream**/
    //InputStream myInput= ReadExcelFile.class.getResourceAsStream( fileName );
    FileInputStream myInput = new FileInputStream(fileName);

    /** Create a POIFSFileSystem object**/
    POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);

    /** Create a workbook using the File System**/
     HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem);

     /** Get the first sheet from workbook**/
    HSSFSheet mySheet = myWorkBook.getSheetAt(0);

    /** We now need something to iterate through the cells.**/
      Iterator rowIter = mySheet.rowIterator();

      while(rowIter.hasNext()){
          HSSFRow myRow = (HSSFRow) rowIter.next();
          Iterator cellIter = myRow.cellIterator();
          Vector cellStoreVector=new Vector();
          while(cellIter.hasNext()){
              HSSFCell myCell = (HSSFCell) cellIter.next();
              cellStoreVector.addElement(myCell);
          }
          cellVectorHolder.addElement(cellStoreVector);
      }
    }catch (Exception e){e.printStackTrace(); }
    return cellVectorHolder;
}

private static void printCellDataToConsole(Vector dataHolder) {

    for (int i=0;i<dataHolder.size(); i++){
               Vector cellStoreVector=(Vector)dataHolder.elementAt(i);
        for (int j=0; j < cellStoreVector.size();j++){
            HSSFCell myCell = (HSSFCell)cellStoreVector.elementAt(j);
            String stringCellValue = myCell.toString();
            System.out.print(stringCellValue+"\t");
        }
        System.out.println();
    }
}

}

Answer 2

有一个关于Javaworld的文档，It's POI-Fect向您展示如何实现这一目标。

示例：

String fileName = "C:/MyExcelFile.xls"; // file we are interested in
POIFSFileSystem fileSystem = new POIFSFileSystem(new FileInputStream(fileName));
HSSFWorkbook workbook = new HSSFWorkbook(fileSystem);
HSSFSheet sheet = workbook.getSheetAt(0); //Get first Excel Sheet

//Iterate throw each row.
Iterator<Row> rows = sheet.rowIterator();
while (rows.hasNext()) {
    HSSFRow row = (HSSFRow) rows.next();

    Iterator<Cell> cells = row.cellIterator();
    while (cells.hasNext()) {
        HSSFCell cell = (HSSFCell) cells.next();

        //Must do this, you need to get value based on the cell type
        switch (cell.getCellType()) {
            case HSSFCell.CELL_TYPE_NUMERIC:
                System.out.println(cell.getNumericCellValue());
            break;
            case HSSFCell.CELL_TYPE_STRING:
                System.out.println(cell.getStringCellValue());
            break;
            default: break;
        }
    }
}

如何使用Apache POI读取所有单元格值？

2 个答案: