Java 用图像生成Excel表格

我正在尝试使用Netbeans使用Java生成excel工作表，我希望excel工作表包含可以使用JFileChooser添加的图像，方法是将其解析为数组中的字节并将其放入列A中，而列B是该图像的描述，但是我编写的代码只在B列中放置了一个图像，而我想在不同的行中列出多个图像，并在B列中对它们进行描述

主要类别：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import org.apache.commons.compress.utils.IOUtils;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.ClientAnchor;
import org.apache.poi.ss.usermodel.CreationHelper;
import org.apache.poi.ss.usermodel.Drawing;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Picture;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;



public class ExcelWriter {

    static String imagePath;
    static String imageDesc;

    static int numOfData;

    private static String[] columns = { "DropBox Link", "Description"};
    private static List<Data> datas = new ArrayList<Data>();


        static JFileChooser chooser = new JFileChooser();

    public static void main(String[] args) throws IOException, 
    InvalidFormatException {

        //taking user input using Scanner Library
        Scanner in = new Scanner(System.in);



        System.out.println("How many data you need?");
        numOfData = in.nextInt();
//      numOfData = numOfData+1;

        for (int i = 0; i < numOfData; i++) {

                    System.out.println("Choose the file");

                    File file = chooser.getSelectedFile();
                    chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
                    int returnVal = chooser.showOpenDialog(chooser);
                    if(returnVal == JFileChooser.APPROVE_OPTION) {
                    System.out.println("You chose to open this directory: " +
                    chooser.getSelectedFile().getAbsolutePath());
                    }

                    imagePath = chooser.getSelectedFile().getAbsolutePath();

            System.out.println("Description for it?");

            imageDesc = JOptionPane.showInputDialog("Input");

                    datas.add(new Data(imagePath, imageDesc));

        }

        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("dropboxLinks");
                //FileInputStream obtains input bytes from the image file
                InputStream inputStream = new FileInputStream(chooser.getSelectedFile().getAbsolutePath());
                //Get the contents of an InputStream as a byte[].
                byte[] bytes = IOUtils.toByteArray(inputStream);
                //Adds a picture to the workbook
                int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
                //close the input stream
                inputStream.close();
                //Returns an object that handles instantiating concrete classes
                CreationHelper helper = workbook.getCreationHelper();
                //Creates the top-level drawing patriarch.
                Drawing drawing = sheet.createDrawingPatriarch();
                //Create an anchor that is attached to the worksheet
                ClientAnchor anchor = helper.createClientAnchor();
                //create an anchor with upper left cell _and_ bottom right cell
                anchor.setCol1(1); //Column B
                anchor.setRow1(2); //Row 3
                anchor.setCol2(2); //Column C
                anchor.setRow2(3); //Row 4
                //Creates a picture
                Picture pict = drawing.createPicture(anchor, pictureIdx);

                //Reset the image to the original size
                //pict.resize(); //don't do that. Let the anchor resize the image!

                //Create the Cell B3
                //Cell cell = sheet.createRow(2).createCell(1);

        Font headerFont = workbook.createFont();
        headerFont.setBold(true);
        headerFont.setFontHeightInPoints((short) 14);
        headerFont.setColor(IndexedColors.RED.getIndex());

        CellStyle headerCellStyle = workbook.createCellStyle();
        headerCellStyle.setFont(headerFont);

        // Create a Row
        Row headerRow = sheet.createRow(0);

        for (int i = 0; i < columns.length; i++) {
                    Cell cell = headerRow.createCell(i);
                    cell.setCellValue(columns[i]);
                    cell.setCellStyle(headerCellStyle);
        }

        // Create Other rows and cells with datas data
        int rowNum = 1;

        for (Data datas : datas) {
                    Row row = sheet.createRow(rowNum++);
                    row.createCell(0).setCellValue(datas.imagePath);
                    row.createCell(1).setCellValue(datas.imageDesc);
        }

        // Resize all columns to fit the content size
        for (int i = 0; i < columns.length; i++) {
                    sheet.autoSizeColumn(i);
        }

        // Write the output to a file
        FileOutputStream fileOut = new FileOutputStream("dropboxLinks.xlsx");
        workbook.write(fileOut);
        fileOut.close();
              }


    }

---

我希望在第一行有一个标题，代码从第二行开始，使用JFileChooser在a列中放置一个图像，在B列中我希望它是在a列中使用JOptionPane.showInputDialog（）对该图像的描述。

您从未对

图像进行迭代，仅对
imagePath
和
imageDescription
执行迭代

在代码中：

InputStream InputStream=新文件InputStream（chooser.getSelectedFile（）.getAbsolutePath（））

这是最后一次输入，因此您的excel只有最后一张图片

更正此处以解决您的问题：

        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("dropboxLinks");

        int startRow = 1;
        for(int intR=0; intR<datas.size(); intR++) {
                //FileInputStream obtains input bytes from the image file
                InputStream inputStream = new FileInputStream(datas.get(intR).imagePath);
                //Get the contents of an InputStream as a byte[].
                byte[] bytes = org.apache.poi.util.IOUtils.toByteArray(inputStream);
                //Adds a picture to the workbook
                int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
                //close the input stream
                inputStream.close();
                //Returns an object that handles instantiating concrete classes
                CreationHelper helper = workbook.getCreationHelper();
                //Creates the top-level drawing patriarch.
                Drawing drawing = sheet.createDrawingPatriarch();
                //Create an anchor that is attached to the worksheet
                ClientAnchor anchor = helper.createClientAnchor();
                //create an anchor with upper left cell _and_ bottom right cell
                anchor.setCol1(1); //Column B
                anchor.setRow1(startRow);
                anchor.setCol2(2); //Column C
                anchor.setRow2(3); //Row 4
                //Creates a picture
                Picture pict = drawing.createPicture(anchor, pictureIdx);
                startRow++;
        }
                //Reset the image to the original size
                //pict.resize(); //don't do that. Let the anchor resize the image!

                //Create the Cell B3
                //Cell cell = sheet.createRow(2).createCell(1);

Workbook工作簿=新建XSSF工作簿（）；
Sheet Sheet=workbook.createSheet（“dropboxLinks”）；
int startRow=1；
对于（int intR=0；intR您从未对
图像进行迭代
，您只对
图像路径
和
图像描述
进行迭代

在代码中：

InputStream InputStream=新文件InputStream（chooser.getSelectedFile（）.getAbsolutePath（））

这是最后一次输入，因此您的excel只有最后一张图片

更正此处以解决您的问题：

        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("dropboxLinks");

        int startRow = 1;
        for(int intR=0; intR<datas.size(); intR++) {
                //FileInputStream obtains input bytes from the image file
                InputStream inputStream = new FileInputStream(datas.get(intR).imagePath);
                //Get the contents of an InputStream as a byte[].
                byte[] bytes = org.apache.poi.util.IOUtils.toByteArray(inputStream);
                //Adds a picture to the workbook
                int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
                //close the input stream
                inputStream.close();
                //Returns an object that handles instantiating concrete classes
                CreationHelper helper = workbook.getCreationHelper();
                //Creates the top-level drawing patriarch.
                Drawing drawing = sheet.createDrawingPatriarch();
                //Create an anchor that is attached to the worksheet
                ClientAnchor anchor = helper.createClientAnchor();
                //create an anchor with upper left cell _and_ bottom right cell
                anchor.setCol1(1); //Column B
                anchor.setRow1(startRow);
                anchor.setCol2(2); //Column C
                anchor.setRow2(3); //Row 4
                //Creates a picture
                Picture pict = drawing.createPicture(anchor, pictureIdx);
                startRow++;
        }
                //Reset the image to the original size
                //pict.resize(); //don't do that. Let the anchor resize the image!

                //Create the Cell B3
                //Cell cell = sheet.createRow(2).createCell(1);

Workbook工作簿=新建XSSF工作簿（）；
Sheet Sheet=workbook.createSheet（“dropboxLinks”）；
int startRow=1；
对于（int intR=0；intRSo，这里有什么问题？问题是我希望图像显示在A列中，但它显示在B列中，无法插入多个图像。那么，这里有什么问题？问题是我希望图像显示在A列中，但它显示在B列中，无法插入多个图像。非常感谢您的回复，这是e这对我非常有帮助，但问题还没有完全解决，现在它显示了2个图像，即使用户希望显示更多，请参考上面的代码
System.out.println（“需要多少数据？”）；numOfData=in.nextInt（）；
因此，如果用户需要6个数据，并且他选择了6个图像，那么只有其中的2个将显示在第2行和第3行的工作表中。非常感谢您的回复，这对我非常有帮助，但问题还没有完全解决，现在它显示了2个图像，即使用户希望显示更多图像，请参考上面的代码
System.out.println（“您需要多少数据？”）；numfdata=in.nextInt（）；
因此，如果用户需要6个数据，并且他选择了6个图像，则只有其中的2个图像将显示在第2行和第3行的工作表中。