要复制sheet行中的图片，您可以使用Apache POI提供的PictureData和CreationHelper类来实现。下面是修改后的代码示例：

private void mergeFileSheet(File originalFile, List<String> fileUrls) throws Exception {
    try (FileInputStream fis = new FileInputStream(originalFile);
         Workbook originalWorkbook = new XSSFWorkbook(fis)) {
        for (String fileUrl : fileUrls) {
            // 下载附件
            byte[] fileContent = fastDfsClient.download(fileUrl);
            String originalFilename = fastDfsClient.getOriginalFilename(fileUrl);
            try (ByteArrayInputStream bais = new ByteArrayInputStream(fileContent);
                 Workbook attachmentWorkbook = new XSSFWorkbook(bais)) {
                // 获取附件中sheet数量
                int numberOfSheets = attachmentWorkbook.getNumberOfSheets();
                int sheetIndex = 0;
                for (int i = 0; i < numberOfSheets; i++) {
                    Sheet attachmentSheet = attachmentWorkbook.getSheetAt(i);
                    boolean sheetEmpty = ExcelUtil.isSheetEmpty(attachmentSheet);
                    if(sheetEmpty){
                       continue;
                    }
                    sheetIndex++;
                    String newSheetName = "附件-" + originalFilename.substring(0, originalFilename.lastIndexOf(".")) + "-" + sheetIndex;
                    // 创建新的sheet页来放置附件内容
                    Sheet newSheet = originalWorkbook.createSheet(newSheetName);
                    Drawing<?> drawingPatriarchNew = newSheet.createDrawingPatriarch();
                    
                    Drawing<?> drawingPatriarchOld;
                    if (attachmentWorkbook instanceof SXSSFWorkbook) {
                        SXSSFDrawing xssfDrawingOld =(SXSSFDrawing) ((SXSSFSheet) attachmentSheet).getDrawingPatriarch();
                        ByteArrayOutputStream outByteStream=new ByteArrayOutputStream();
                        xssfDrawingOld.write(outByteStream);
                        ByteArrayInputStream inByteStream=new ByteArrayInputStream(outByteStream.toByteArray());
                        drawingPatriarchOld = newSheet.createDrawingPatriarch();
                        ((SXSSFDrawing)drawingPatriarchOld).readFrom(inByteStream);
                    } else {
                        XSSFNameSpace rDmNS =(XSSFNameSpace) ((XSSFSheet) attachmentSheet).getPackagePart().getParent().getParent();
                        XSSFRelation rid=(XSSFRelation) XSSFDrawing.RELATIONS.getRelationByType(XSSFDrawing.NS_DRAWING_REL);
    
                        ByteArrayOutputStream outByteStream=new ByteArrayOutputStream();
                        for (POIXMLDocumentPart part :(List<POIXMLDocumentPart>)((POIXMLDocument)attachmentWorkbook).getAllEmbedds()) {
                            if (part instanceof XSSFDrawing || (rDmNS != null && rDmNS.countDrawingRelationships() > 0)) {
                                PackageRelationshipCollection pdrc;
                                if(rDmNS != null){
                                    pdrc = ((XSSFDrawing)drawingPatriarchOld).getPackagePart().getRelationshipsByType(rid.getContentType(), rDmNS.getNamespaceURI());
                                }else{
                                    pdrc = ((XSSFDrawing)drawingPatriarchOld).getPackagePart().getRelationshipsByType(rid.getContentType());
                                }
    
                                for(PackageRelationship pr : pdrc){
                                    PackagePart dspp=pr.getDocumentPart();
                                    OutputStream dspOut=dspp.getOutputStream();//
                                    xssfDrawingOld.write(dspOut);
                                    dspOut.close();
    
                                    ByteArrayOutputStream by1eArrayOutputStream=new ByteArrayOutputStream();
                                    dspp.save(by1eArrayOutputStream);//
    
                                    ByteArrayInputStream byteArrayInputStream2=new ByteArrayInputStream(by1eArrayOutputStream.toByteArray());//
                                    OPCPackage pkg=((POIXMLDocumentFactory)(OPCPackageFactory.newInstance()))._open(byteArrayInputStream2);
    
                                    if (rDmNS != null) {
                                        // check part relations
                                        int pdrcSize = rDmNS.countDrawingRelationships();
                                        for (int prIndex = 0; prIndex < pdrcSize; prIndex++) {
                                            PackageRelationship drr = rDmNS.getDrawingRelationship(prIndex);
    
                                            Drawing<?> dr=(Drawing<?>)XSSFDrawing.createDrawingPackagePart(drr, pkg).getDocumentPart();
                                            if (dr instanceof XSSFDrawing){
                                                drawingPatriarchOld =(SXSSFDrawing) dr;
                                                break;
                                            }
                                        }
                                    } else {
                                        drawingPatriarchOld =(SXSSFDrawing) ((XSSFWorkbook)attachmentWorkbook).getAllEmbedds().get(1);
                                    }
                                }
                            }
                        }
                    }
                    for (Row sourceRow : attachmentSheet) {
                        Row targetRow = newSheet.createRow(sourceRow.getRowNum());
                        // 复制附件
                        copyRow(sourceRow, targetRow, originalWorkbook);
                        Drawing<?> sourceDrawingPatriarch = sourceRow.getSheet().createDrawingPatriarch();
                        
                        for(Drawing<?> dr:sourceDrawingPatriarch){
                            CreationHelper helper = originalWorkbook.getCreationHelper();
                            ClientAnchor anchorNew = helper.createClientAnchor();
                            if(drawingPatriarchOld instanceof XSSFDrawing){
                                XSSFPicture pictureNew= (XSSFPicture)drawingPatriarchNew.createPicture(anchorNew,
                                    originalWorkbook.addPicture(((XSSFPicture)((XSSFSheet)sourceSheet).getRelationsShips().get(dr)).getPictureData().getData(), PictureType.PNG));
                            
                                pictureNew.getClientAnchor().setCol1(((XSSFPicture)((XSSFSheet)sourceSheet).getRelationsShips().get(dr)).getClientAnchor().getCol1());
                                pictureNew.getClientAnchor().setCol2(((XSSFPicture)((XSSFSheet)sourceSheet).getRelationsShips().get(dr)).getClientAnchor().getCol2());
                                pictureNew.getClientAnchor().setRow1(((XSSFPicture)((XSSFSheet)sourceSheet).getRelationsShips().get(dr)).getClientAnchor().getRow1());
                                pictureNew.getClientAnchor().setRow2(((XSSFPicture)((XSSFSheet)sourceSheet).getRelationsShips().get(dr)).getClientAnchor().getRow2());
                            } else if(drawingPatriarchOld instanceof SXSSFClientAnchor){
                                XSSFDrawing xssfDrawing = (SXSSFDrawing)drawingPatriarchOld;
                                anchorNew.setDx1(xssfDrawing.getFromDX1(dx));
                                anchorNew.setDy1(xssfDrawing.getFromDY1(dy));
                                anchorNew.setDx2(xssfDrawing.getFromDX2(dx));
                                anchorNew.setDy2(xssfDrawing.getFromDY2(dy));
                                XSSFPictureData pd=xssfPictureDataList.get(i);
                                
                                 // 添加图片到新的sheet
                                 int pictureIndex = originalWorkbook.addPicture(pd.getData(), pd.getPictureType());
                                 drawingPatriarch.createPicture(anchor, pictureIndex);
                            }
                        }
                    }
                }
            }
        }
        // 写入修改后的Workbook到文件
        try (FileOutputStream fos = new FileOutputStream(originalFile)) {
            originalWorkbook.write(fos);
        }
    }
}

这段代码会遍历附件中的每个sheet，复制行数据并在目标文件中创建新的sheet，并将原始sheet中的图片复制到目标sheet。请确保已经导入了相关依赖，如Apache POI和FastDFS客户端。同时，请根据您的实际需求进行适当修改和调整。


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