在 Java 中将图像插入 Excel Sheet (POI) 时出现问题

Question

当我将多个图像插入 Excel 工作表时，单元格中的图像对齐出现问题。工作表类型为 XSSFSheet。当我设置anchor1.setDx1和anchor.setDx2的值时，它们没有响应。

private void drawImageOnExcelSheet(XSSFSheet sheet, int row, int row2, int col, int col2, int pictureIdx) throws Exception {
        CreationHelper helper = sheet.getWorkbook().getCreationHelper();
        Drawing drawing = sheet.createDrawingPatriarch();
        ClientAnchor anchor1 = helper.createClientAnchor();
      
        anchor1.setRow1(row); // second anchor determines bottom right position
        anchor1.setRow2(row2);
        anchor1.setCol1(col);
        anchor1.setCol2(col2);
        
        Picture pic = drawing.createPicture(anchor1, pictureIdx);
    }`

 `String imagesource = valuehandler.extractCountry(country) + ".png";
                  InputStream inputStream1 = new FileInputStream(dir + "\\Flags\\" + imagesource); 
                  byte[] inputImageBytes1 = IOUtils.toByteArray(inputStream1);
                  int inputImagePictureID1 = wb.addPicture(inputImageBytes1, Workbook.PICTURE_TYPE_PNG);
                  inputStream1.close();
                    
                  try {
                      drawImageOnExcelSheet((XSSFSheet) sheet1, h, h+1, 0, 1, inputImagePictureID1);
                  } catch (Exception e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
          `       }
```


[enter image description here][1]


  [1]: https://i.stack.imgur.com/CUGQV.png

Answer 1

您考虑过使用JXLS吗？

JXLS 是 Apache POI 的一个小型包装器，它允许您使用 Microsoft Excel 定义模板，而不是在 Java 代码中执行所有操作。您的模板中有一小部分标记（for 循环、值占位符等），但大多数表示逻辑（例如颜色、粗体、页眉、页脚、图像等）都可以在 Excel 中完成。

例如你可以使用

jx:foreach(items="employees" var="employee" lastCell="D4")

和

x:image(lastCell="D10" src="_employee.country" imageType="PNG")

和

List<Employee> employees = List.of(
   new Employee("foo", "france"),
   new Employee("bar", "england"),
   new Employee("bza", "france")
);
Set<String> uniqueCountries = employees.stream().map(Employee::getCountry).toSet();
context.putVar("employees", employees);
for (String country : uniqueCountries) {
   String path = dir + /flags/" + country + ".png"
   byte[] imageBytes = Util.toByteArray(new FileInputStream(path));
   context.putVar(country, imageBytes);
}