Question

这是我用于在Excel中将图像作为图标插入的方法：

public void insertIcons(String URL, Sheet sheet, int colBegin, int colEnd, int rowBegin, int rowEnd) {
    try {
        InputStream iconInput = new FileInputStream(URL);
        byte[] byteTransf = IOUtils.toByteArray(iconInput);
        int pictureIdx = workbook.addPicture(byteTransf, org.apache.poi.ss.usermodel.Workbook.PICTURE_TYPE_PNG);
        iconInput.close();


        CreationHelper helper = workbook.getCreationHelper();
        Drawing drawingIcon = sheet.createDrawingPatriarch();

        ClientAnchor anchorIcon = helper.createClientAnchor();
        anchorIcon.setCol1(colBegin);
        anchorIcon.setCol2(colEnd);
        anchorIcon.setRow1(rowBegin);
        anchorIcon.setRow2(rowEnd);

        Picture iconReady = drawingIcon.createPicture(anchorIcon, pictureIdx);
        iconReady.resize(1);

    } catch (Exception e) {
        e.printStackTrace();
    }
}

这是我使用此方法创建图标：

insertIcons(".idea/Icons/table.png", sheetName, 4, 4, 6, 9);

是否可以将此图标中的超链接转到同一个电子表格中的另一个工作表或网站？

我读到显然POI中没有支持，但可以使用底层的lowlevel-API。但是我无法真正成功地使用它。

有什么建议吗？

Answer 1

如果您只支持XSSF，那么这可以使用底层的低级对象来完成。

如何开始？使用Excel创建一个工作簿，其中包含带有超链接的图片。然后解压缩*.xlsx并查看/xl/drawings/drawing1.xml。你会在那里找到：

<xdr:pic>
 <xdr:nvPicPr>
  <xdr:cNvPr id="1" name="Picture 1" descr="Picture">
   <a:hlinkClick r:id="rId2"/>
  </xdr:cNvPr>
...

因此，图片具有非可视图片设置，具有非可视属性，点击超链接并设置rId。

rId指向某段关系，请查看xl/drawings/_rels/drawing1.xml.rels。在那里，您会发现超链接目标设置为rId。

因此，我们需要设置具有非可视属性的非可视图片设置，其具有超链接点击。但我们也需要设置获得rId的关系。

首先，我们从org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTPicture开始。我们可以从XSSFPicture获得CTPicture。

为了做到第二步，我们需要PackagePart.addExternalRelationship，其中PackagePart可以从XSSFDrawing获得。

完整示例：

import java.io.*;

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.*;
import org.apache.poi.ss.usermodel.ClientAnchor.AnchorType;
import org.apache.poi.util.IOUtils;

import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTPicture;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTPictureNonVisual;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;
import org.openxmlformats.schemas.drawingml.x2006.main.CTHyperlink;

import org.apache.poi.openxml4j.opc.PackageRelationship;
import org.apache.poi.openxml4j.opc.PackageRelationshipTypes;

public class CreateExcelPicturesHyperlink {

 private static Picture drawImageOnExcelSheet(Sheet sheet, int row1, int col1, 
  int row2, int col2, String pictureurl, int picturetype) throws Exception {

  InputStream is = new FileInputStream(pictureurl);
  byte[] bytes = IOUtils.toByteArray(is);
  int pictureIdx = sheet.getWorkbook().addPicture(bytes, picturetype);
  is.close();

  CreationHelper helper = sheet.getWorkbook().getCreationHelper();

  Drawing drawing = sheet.createDrawingPatriarch();

  ClientAnchor anchor = helper.createClientAnchor();
  anchor.setAnchorType(AnchorType.MOVE_AND_RESIZE);

  anchor.setRow1(row1); //first anchor determines upper left position
  anchor.setCol1(col1); 
  anchor.setRow2(row2); //second anchor determines bottom right position
  anchor.setCol2(col2);

  Picture picture = drawing.createPicture(anchor, pictureIdx);
  return picture;
 }

 private static void setHyperlinkToPicture(Picture picture, String hyperlinkurl) throws Exception {
  if (picture instanceof XSSFPicture) {
   XSSFPicture xssfpicture = (XSSFPicture)picture;

   XSSFDrawing drawing = xssfpicture.getSheet().createDrawingPatriarch();
   PackageRelationship packagerelationship = 
    drawing.getPackagePart().addExternalRelationship(hyperlinkurl, PackageRelationshipTypes.HYPERLINK_PART);
   String rid = packagerelationship.getId();

   CTPicture ctpicture = xssfpicture.getCTPicture();
   CTPictureNonVisual ctpicturenonvisual = ctpicture.getNvPicPr();
   if (ctpicturenonvisual == null) ctpicturenonvisual = ctpicture.addNewNvPicPr();
   CTNonVisualDrawingProps ctnonvisualdrawingprops = ctpicturenonvisual.getCNvPr();
   if (ctnonvisualdrawingprops == null) ctnonvisualdrawingprops = ctpicturenonvisual.addNewCNvPr();
   CTHyperlink cthyperlink = ctnonvisualdrawingprops.getHlinkClick();
   if (cthyperlink == null) cthyperlink = ctnonvisualdrawingprops.addNewHlinkClick();
   cthyperlink.setId(rid);

  }
 }

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

  Workbook workbook = new XSSFWorkbook();
  Sheet sheet = workbook.createSheet("Sheet1");

  Picture picture = drawImageOnExcelSheet(sheet, 2, 2, 4, 4, "samplePict1.jpeg", Workbook.PICTURE_TYPE_JPEG);
  setHyperlinkToPicture(picture, "http://www.google.de");

  workbook.createSheet("Sheet2");
  picture = drawImageOnExcelSheet(sheet, 6, 2, 8, 4, "samplePict2.png", Workbook.PICTURE_TYPE_PNG);
  setHyperlinkToPicture(picture, "#Sheet2!B3");

  workbook.write(new FileOutputStream("CreateExcelPicturesHyperlink.xlsx"));
  workbook.close();

 }

}

Apache poi在图像中放置超链接

1 个答案: