java uses poi to add multiple pictures to word

The method provided by poi is to add pictures to word, but it is not compatible with all words. So you need to override his method

The first step is to import the jar

  <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.15</version>
    </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.15</version>
        </dependency>

The second step is to write a tool class that rewrites the methods in poi

import java.io.IOException;  
import java.io.InputStream;  

import org.apache.poi.openxml4j.opc.OPCPackage;  
import org.apache.poi.xwpf.usermodel.XWPFDocument;  
import org.apache.poi.xwpf.usermodel.XWPFParagraph;  
import org.apache.xmlbeans.XmlException;  
import org.apache.xmlbeans.XmlToken;  
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;  
import org.openxmlformats.schemas.drawingml.x2006.main.CTPositiveSize2D;  
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTInline;  

/**  
 * @author POI 导出图片bug修复 
 *   
 */    
public class CustomXWPFDocument extends XWPFDocument {    
    public CustomXWPFDocument(InputStream in) throws IOException {    
        super(in);    
    }    

    /**  
     *   
     */    
    public CustomXWPFDocument() {    
        super();    
        // TODO Auto-generated constructor stub     
    }    

    /**  
     * @param pkg  
     * @throws IOException  
     */    
    public CustomXWPFDocument(OPCPackage pkg) throws IOException {    
        super(pkg);    
        // TODO Auto-generated constructor stub     
    }  // picAttch 图片后面追加的字符串 可以是空格  
    public void createPicture(XWPFParagraph paragraph,int id, int width, int height,String picAttch) {    
        final int EMU = 9525;    
        width *= EMU;    
        height *= EMU;    
        String blipId = getAllPictures().get(id).getPackageRelationship()    
                .getId();    

        CTInline inline = paragraph.createRun().getCTR()    
                .addNewDrawing().addNewInline();    
        paragraph.createRun().setText(picAttch);  
        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>";    

        // CTGraphicalObjectData graphicData =     
        inline.addNewGraphic().addNewGraphicData();    
        XmlToken xmlToken = null;    
        try {    
            xmlToken = XmlToken.Factory.parse(picXml);    
        } catch (XmlException xe) {    
            xe.printStackTrace();    
        }    
        inline.set(xmlToken);    
        // graphicData.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("图片" + id);    
        docPr.setDescr("");    
    }    
}    

The third step, on the core code

//新建word文档
CustomXWPFDocument document=new CustomXWPFDocument();
document.addPictureData(inputStream, XWPFDocument.PICTURE_TYPE_JPEG);   document.createPicture(document.createParagraph(),document.getAllPictures().size()-1, 400, 400,"    ");

Description: inputStream represents the stream you want to put into word

finally

//把word文档写到文件中
File newfile=new File("newfile.docx");
FileOutputStream fos = new FileOutputStream(newfile); 
document.write(fos);

Although I have written it, I feel that I am still using it, I don't understand the meaning of why it is used in this way, and the research is not deep.