Question

将图片添加到另一张图片时出现问题。将图片添加到第一张或唯一一张的图纸上没有问题。我不知道如何解决它。

它也看起来并不容易，POI不允许您将图像添加到其他工作表

提前感谢您对此问题的任何帮助

示例代码：

import org.apache.poi.xssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;

import org.apache.poi.util.IOUtils;

import java.io.InputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;


class ImageTest {

 public static void main(String[] args) {
  try {

   Workbook wb = new XSSFWorkbook();
   Sheet sheet = wb.createSheet("My Sample Excel");
   //FileInputStream obtains input bytes from the image file
   InputStream inputStream = new FileInputStream("/home/axel/Bilder/Wasserlilien.jpg");
   //Get the contents of an InputStream as a byte[].
   byte[] bytes = IOUtils.toByteArray(inputStream);
   //Adds a picture to the workbook
   int pictureIdx = wb.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
   //close the input stream
   inputStream.close();
   //Returns an object that handles instantiating concrete classes
   CreationHelper helper = wb.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);

   //set width to n character widths = count characters * 256
   //int widthUnits = 20*256;
   //sheet.setColumnWidth(1, widthUnits);

   //set height to n points in twips = n * 20
   //short heightUnits = 60*20;
   //cell.getRow().setHeight(heightUnits);

   //Write the Excel file
   FileOutputStream fileOut = null;
   fileOut = new FileOutputStream("myFile.xlsx");
   wb.write(fileOut);
   fileOut.close();

  } catch (IOException ioex) {
  }
 }
}

Answer 1

这真的取决于你的目标。如果你想在多张纸上的同一个地方插入一张图片，那么你可以把你的代码放到这样的循环中：

try {
    Workbook wb = new XSSFWorkbook();

    //FileInputStream obtains input bytes from the image file
    InputStream inputStream = new FileInputStream("C:\\path\\to\\image\\image.jpg");
    //Get the contents of an InputStream as a byte[].
    byte[] bytes = IOUtils.toByteArray(inputStream);
    //Adds a picture to the workbook
    int pictureIdx = wb.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
    //close the input stream
    inputStream.close();

    //Returns an object that handles instantiating concrete classes
    CreationHelper helper = wb.getCreationHelper();

    for(int i = 0; i < 3; i++) {
        Sheet sheet = wb.createSheet("Sheet Number " + i);
        //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);

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

    //Write the Excel file
    FileOutputStream fileOut = null;
    fileOut = new FileOutputStream("C:\\Temp\\myFile.xlsx");
    wb.write(fileOut);
    fileOut.close();
} catch (IOException ioex) {
    ioex.printStackTrace();
}

此代码创建一个包含三张纸的Excel文件，并将图像放在所有三张纸的同一位置。我刚刚对此进行了测试，效果很好。如果您希望将其放在多张纸上的不同位置，您应该能够从此代码中推断出如何执行此操作。您可以将循环与if / case语句一起使用，也可以只按顺序创建工作表。

如何将图像放在Excel工作表中的多个选项卡上

1 个答案: