Question

我正在使用apache poi来读取表单excel文件，代码也可以正常工作，但代码从中间读取数据，但不会从文件的第一行读取。

代码是：

package org.sample;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.ArrayList;

public class Main {

    @SuppressWarnings("unchecked")
    public static void main(String[] args) throws Exception {
//
// An excel file name. You can create a file name with a full
// path information.
//
        String fileName = "D:/workspace/ReadExlsx/xlsx/SampleData.xls";


// Create an ArrayList to store the data read from excel sheet.
//
        List sheetData = new ArrayList();

        FileInputStream fis = null;
        try {
//
// Create a FileInputStream that will be use to read the
// excel file.
//
            fis = new FileInputStream(fileName);

//
// Create an excel workbook from the file system.
//
            HSSFWorkbook workbook = new HSSFWorkbook(fis);
//
// Get the first sheet on the workbook.
//
            HSSFSheet sheet = workbook.getSheetAt(0);

//
// When we have a sheet object in hand we can iterator on
// each sheet's rows and on each row's cells. We store the
// data read on an ArrayList so that we can printed the
// content of the excel to the console.
//
            Iterator rows = sheet.rowIterator();
            while (rows.hasNext()) {
                HSSFRow row = (HSSFRow) rows.next();
                Iterator cells = row.cellIterator();

                List data = new ArrayList();
                while (cells.hasNext()) {
                    HSSFCell cell = (HSSFCell) cells.next();
                    data.add(cell);
                }

                sheetData.add(data);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fis != null) {
                fis.close();
            }
        }

        showExelData(sheetData);
    }

    private static void showExelData(List sheetData) {
//
// Iterates the data and print it out to the console.
//
        for (int i = 0; i < sheetData.size(); i++) {
            List list = (List) sheetData.get(i);
            //for (int j = 0; j < list.size(); j++) {
                HSSFCell employeeid = (HSSFCell) list.get(0);
                HSSFCell department = (HSSFCell) list.get(3);
                HSSFCell date = (HSSFCell) list.get(5);
                System.out.print(employeeid.getRichStringCellValue().getString()+" , ");
                System.out.print(department.getRichStringCellValue().getString()+" , ");
                System.out.print(date.getRichStringCellValue().getString());
                //if (j < list.size() - 1) {
                   // System.out.print(", ");
                //}
           // }
            System.out.println("");
        }
    }
}

请帮助解决这个问题。

Answer 1

如果你有int I行和J列的数据，你应该尝试这样的代码：

   for (int i = 0; i < sheetData.size(); i++) {
        List list = (List) sheetData.get(i);
        for (int j = 0; j < list.size(); j++) {
            HSSFCell employeeid = (HSSFCell) list.get(j);
            System.out.print(employeeid.getRichStringCellValue().getString());
            if (j < list.size() - 1) {
                System.out.print(", ");
            }
        }
        System.out.println("");
    }

对我来说它完美无缺。我的poi版本是poi-3.8-20120306。

Answer 2

//获取XLS文件的工作簿实例

XSSFWorkbook workbook = new XSSFWorkbook(file);

//从工作簿中获取第一张表

XSSFSheet sheet = workbook.getSheetAt(0);

ArrayList<String> columndata = null;

Iterator<Row> rowIterator = sheet.iterator();
columndata = new ArrayList<>();

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

        if (row.getRowNum() > 0) { // To filter column headings
            if (cell.getColumnIndex() == 0) {// To match column
                                                // index
                switch (cell.getCellType()) {
                case Cell.CELL_TYPE_NUMERIC:
                    columndata.add(cell.getNumericCellValue() + "");
                    break;
                case Cell.CELL_TYPE_STRING:
                    columndata.add(cell.getStringCellValue());
                    break;
                }
            }
        }
    }
}

如何在java中使用poi从excel中读取第一行到最后一行？

2 个答案: