如何在java中读取Excel（.xlsx）文件？

Question

从给定的.xlsx文件，我试图使用Java读取数据。

我的阅读文件代码如下：

public static void main(String[] args) throws Exception {

        FileInputStream file = new FileInputStream(new File("E:\\test1.xlsx"));
        XSSFWorkbook workbook = new XSSFWorkbook(file);
        XSSFSheet test = workbook.getSheetAt(0);

        student emp = new student();
        Iterator<Row> itr = test.iterator();
        itr.next();
        while(itr.hasNext()){
               Row row = itr.next();
               emp.reedData(row);
               System.out.println(id+","+name+","+options);
        }

方法如下：

void reedData(Row row){
    id= row.getCell(0).toString();
    name= row.getCell(1).toString();
    options= row.getCell(2).toString();
}

但是，我得到这样的输出：

1.0,X,play game
,,sing song
2.0,Y,play game
,,sing song

而不是上面，我希望输出看起来像这样：

1.0,X,{play game,sing song}
2.0,Y,{play game,sing song}

这个问题是因为我在.xlsx文件中合并两个单元格。

有什么建议吗？ 先感谢您..

Answer 1

这就是我做到的。

import static java.lang.System.out;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Iterator;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
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.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public  class  read {
    public static void main(String [] args){
        FileInputStream excelFile = new FileInputStream(new File(keep));
        XSSFWorkbook wb = new XSSFWorkbook(excelFile);
        XSSFSheet sheet = wb.getSheetAt(0);

        int rowCount; // number of rows of newly form excel files 
        rowCount= sheet.getPhysicalNumberOfRows();
        out.println(rowCount);

        //trying to iterate the excel file
        int i =0;
        Iterator<Row> rowIterator     = sheet.iterator();
         do{
            Row row = rowIterator.next();
            Iterator<Cell> cellIterator = row.cellIterator();
            while(cellIterator.hasNext()) {
                Cell cell = cellIterator.next();
                if(cell.getColumnIndex()==0) { // to read the first column 
                    DataFormatter df = new DataFormatter();
                    String str2      = df.formatCellValue(cell);
                    customerNo.add(str2);
                }
            }
            ++i;
            if(i>rowCount)break;
            //break;
        }while(rowIterator.hasNext());
        wb.close();
   }
}

希望这可以帮助。

Answer 2

看起来您正在使用Apache POI。 尝试将代码中的这两个单元格合并为：

test.addMergedRegion(1,2,0,0);

要么：

sheet.addMergedRegion(new CellRangeAddress(1,2,0,0))