apache poi_5.2.5 实现对表格单元格的自定义变量名进行图片替换

apache poi_5.2.5 实现对表格单元格的自定义变量名进行图片替换

实现思路

1.首先定位到自定义变量名
2.然后先清除自定义变量名，可利用setText(null,0)来清除
3.在自定义变量名的位置添加图片，使用下面的代码
4.对于图片布局有要求的，利用CTAnchor进行实现
addNewWrapNone;//根据setBehindDoc，来确定浮于文字上方还是下方
addNewWrapSquare;//四周型布局
【注：默认是嵌入型，文字会遮挡部分图片。】

依赖包

		<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>5.2.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>5.2.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-scratchpad</artifactId>
            <version>5.2.5</version>
        </dependency>

代码实现

 public static void main(String[] args) throws Exception {
        String wenshuUrl = "D:\\demo1.docx";
        File file = new File(wenshuUrl);
        byte[] bytes = Files.readAllBytes(Paths.get(file.toURI()));
        ByteArrayInputStream in = new ByteArrayInputStream(bytes);
        XWPFDocument doc = new XWPFDocument(in);
        String pic = "D:\\demo1.png";
        File file2 = new File(pic);
        byte[] bytes2 = Files.readAllBytes(Paths.get(file2.toURI()));
        ByteArrayInputStream bis2 = new ByteArrayInputStream(bytes2);
        for (int i = 0; i < doc.getTables().size(); i++) {
            for (int rowIndex = 0; rowIndex < doc.getTables().get(i).getRows().size(); rowIndex++) {
                XWPFTableRow row = doc.getTables().get(i).getRow(rowIndex);
                row.getTableCells().stream().forEach(cell -> {
                            for (XWPFParagraph paragraph : cell.getParagraphs()) {
                                List<XWPFRun> runs = paragraph.getRuns();
                                for (XWPFRun run : runs) {
                                    try {
                                        addPicture(run, bis2,pic,500,400);
                                    } catch (InvalidFormatException e) {
                                        throw new RuntimeException(e);
                                    } catch (IOException e) {
                                        throw new RuntimeException(e);
                                    } catch (SAXException e) {
                                        throw new RuntimeException(e);
                                    } catch (XmlException e) {
                                        throw new RuntimeException(e);
                                    }
                                }
                            }
                });
            }
        }
        OutputStream output = new FileOutputStream("D:\\afteradd1.doc");
        doc.write(output);
        output.close();
    }
    /**
     * 添加图片（布局环绕模式）
     * @param run
     * @param stream 图片流
     * @param filename 文件路径
     * @param width 图片的宽度
     * @param height  图片的高度
     */
    private static void addPicture(XWPFRun run, InputStream stream, String filename, int width, int height ) throws InvalidFormatException, IOException, SAXException, XmlException {
        run.addPicture(stream, getPictureTypeByFileName(filename), filename, Units.toEMU(width), Units.toEMU(height));
        CTDrawing drawing = run.getCTR().getDrawingArray(0);
        CTGraphicalObject graphicalObject = drawing.getInlineArray(0).getGraphic();
        //这个是relationId，即图片位置的id
        long id = drawing.getInlineArray(0).getDocPr().getId();
        //设置一个浮动模式
        CTAnchor anchor = drawing.addNewAnchor();
        //创建一个包含浮动模式的xml字符串
        String xml = " + CTGraphicalObject.type.getName().getNamespaceURI() + "\"> + CTPicture.type.getName().getNamespaceURI() + "\"> + CTPicture.type.getName().getNamespaceURI() + "\" />";
        //将xml字符串转换为InputSource对象
        InputSource is = new InputSource(new StringReader(xml));
        //生成Document对象，用于将
        Document doc = DocumentHelper.readDocument(is);
        anchor.set(XmlToken.Factory.parse(doc.getDocumentElement(),DEFAULT_XML_OPTIONS));
        //设置浮动位置，0表示紧贴文字
        anchor.setDistT(0L);
        anchor.setDistR(0L);
        anchor.setDistB(0L);
        anchor.setDistL(0L);
        anchor.setLocked(false);
        anchor.setLayoutInCell(true);
        anchor.setSimplePos2(false);
        anchor.setAllowOverlap(true);
        anchor.setRelativeHeight(0);
        //图片的布局环绕模式
        anchor.addNewWrapSquare();

        CTPosH ctPosH = anchor.addNewPositionH();
        //STRelFromH 水平方向的位置相对于谁进行调整 character：文字
        ctPosH.setRelativeFrom(STRelFromH.CHARACTER);
        //调整水平方向的位置，从左往右递增，0代表紧贴文字
        ctPosH.setPosOffset( Units.toEMU(0));
        CTPosV ctPosV = anchor.addNewPositionV();
        //STRelFromV 垂直方向的位置相对于谁进行调整 PARAGRAPH：字段
        ctPosV.setRelativeFrom(STRelFromV.PARAGRAPH);
        //调整垂直方向的位置，从上往下数值递增
        ctPosV.setPosOffset( Units.toEMU(-10));
        CTPoint2D ctPoint2D = anchor.addNewSimplePos();
        ctPoint2D.setX(0);
        ctPoint2D.setY(0);
        anchor.addNewCNvGraphicFramePr();
        CTNonVisualDrawingProps docPr = anchor.addNewDocPr();
        docPr.setId(id);
        docPr.setName("Drawing " + id);
        docPr.setDescr(filename);
        CTPositiveSize2D extent = anchor.addNewExtent();
        extent.setCx(Units.toEMU(width));
        extent.setCy(Units.toEMU(height));
        anchor.setGraphic(graphicalObject);
        //添加浮动属性
        drawing.setAnchorArray(new CTAnchor[]{anchor});
        //删除行内属性
        drawing.removeInline(0);
    }

    public static int getPictureTypeByFileName(String fileName) {
        if (StringUtils.isEmpty(fileName)) {
            throw new RuntimeException("文件名称不能为空！");
        }
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        switch (suffix) {
            case ".jpg":
            case ".jpeg":
                return XWPFDocument.PICTURE_TYPE_JPEG;
            case ".wmf":
                return XWPFDocument.PICTURE_TYPE_WMF;
            case ".png":
            case ".PNG":
                return XWPFDocument.PICTURE_TYPE_PNG;
            case ".gif":
                return XWPFDocument.PICTURE_TYPE_GIF;
            case ".tiff":
                return XWPFDocument.PICTURE_TYPE_TIFF;
            case ".bmp":
                return XWPFDocument.PICTURE_TYPE_BMP;
            default:
                throw new RuntimeException("不支持的文件类型：" + suffix);
        }
    }