踩坑日记--poi操作word替换图片显示问题

太过爱你忘了你带给我的痛 2022-05-21 06:26 1164阅读 0赞

### 说明 ###

最近遇到一个比较坑的问题，就是使用poi操作word文档，通过替换书签的方式替换成图片时，图片在word中显示正常，但是通过libreoffice转成pdf时显示不全。经过测试发现，图片插入到word中默认是嵌入型，导致最终转成pdf后的显示问题。因此，对应修改图片的替换方法即可。相关代码如下：

### 原实现方法 ###

public void createPicture(String blipId, int id, int width, int height, XWPFParagraph paragraph) {
        final int EMU = 9525;
        width *= EMU;
        height *= EMU;
        CTInline inline = paragraph.createRun().getCTR().addNewDrawing().addNewInline();
    
        String picXml = "" +
                "<a:graphic xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">" +
                " <a:graphicData uri=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">" +
                " <pic:pic xmlns:pic=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">" +
                " <pic:nvPicPr>" +
                " <pic:cNvPr id=\"" + id + "\" name=\"Generated\"/>" +
                " <pic:cNvPicPr/>" +
                " </pic:nvPicPr>" +
                " <pic:blipFill>" +
                " <a:blip r:embed=\"" + blipId + "\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\"/>" +
                " <a:stretch>" +
                " <a:fillRect/>" +
                " </a:stretch>" +
                " </pic:blipFill>" +
                " <pic:spPr>" +
                " <a:xfrm>" +
                " <a:off x=\"0\" y=\"0\"/>" +
                " <a:ext cx=\"" + width + "\" cy=\"" + height + "\"/>" +
                " </a:xfrm>" +
                " <a:prstGeom prst=\"rect\">" +
                " <a:avLst/>" +
                " </a:prstGeom>" +
                " </pic:spPr>" +
                " </pic:pic>" +
                " </a:graphicData>" +
                "</a:graphic>";
    
        XmlToken xmlToken = null;
        try {
            xmlToken = XmlToken.Factory.parse(picXml);
        } catch (XmlException xe) {
            log.info(xe);
        }
        inline.set(xmlToken);
    
        inline.setDistT(0);
        inline.setDistB(0);
        inline.setDistL(0);
        inline.setDistR(0);
    
        CTPositiveSize2D extent = inline.addNewExtent();
        extent.setCx(width);
        extent.setCy(height);
    
        CTNonVisualDrawingProps docPr = inline.addNewDocPr();
        docPr.setId(id);
        docPr.setName("Picture " + id);
        docPr.setDescr("Generated");
    }

### 改造后实现方法 ###

public void createPicture(String blipId, int id, int width, int height, XWPFParagraph paragraph) {
        final int EMU = 9525;
        width *= EMU;
        height *= EMU;
    
        CTDrawing drawing = paragraph.createRun().getCTR().addNewDrawing();
        CTAnchor anchor = drawing.addNewAnchor();
        anchor.setBehindDoc(false);
        anchor.setLocked(false);
        anchor.setLayoutInCell(true);
        anchor.setAllowOverlap(true);
        CTAnchor inline = anchor;
    
        String picXml = "" +
                "<a:graphic xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">" +
                " <a:graphicData uri=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">" +
                " <pic:pic xmlns:pic=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">" +
                " <pic:nvPicPr>" +
                " <pic:cNvPr id=\"" + id + "\" name=\"Generated\"/>" +
                " <pic:cNvPicPr/>" +
                " </pic:nvPicPr>" +
                " <pic:blipFill>" +
                " <a:blip r:embed=\"" + blipId + "\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\"/>" +
                " <a:stretch>" +
                " <a:fillRect/>" +
                " </a:stretch>" +
                " </pic:blipFill>" +
                " <pic:spPr>" +
                " <a:xfrm>" +
                " <a:off x=\"0\" y=\"0\"/>" +
                " <a:ext cx=\"" + width + "\" cy=\"" + height + "\"/>" +
                " </a:xfrm>" +
                " <a:prstGeom prst=\"rect\">" +
                " <a:avLst/>" +
                " </a:prstGeom>" +
                " </pic:spPr>" +
                " </pic:pic>" +
                " </a:graphicData>" +
                "</a:graphic>";
    
        XmlToken xmlToken = null;
        try {
            xmlToken = XmlToken.Factory.parse(picXml);
        } catch (XmlException xe) {
            log.info(xe);
        }
        inline.set(xmlToken);
    
        inline.setDistT(0);
        inline.setDistB(0);
        inline.setDistL(0);
        inline.setDistR(0);
    
        CTPositiveSize2D extent = inline.addNewExtent();
        extent.setCx(width);
        extent.setCy(height);
    
        CTNonVisualDrawingProps docPr = inline.addNewDocPr();
        docPr.setId(id);
        docPr.setName("Picture " + id);
        docPr.setDescr("Generated");
    }