poi提供的方法是有新增圖片到word的，但是並不是相容所有word。所以需要重寫他的方法

第一步，匯入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>

第二步，寫了一個工具類，重寫poi裡面的方法的

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 匯出圖片bug修復 
 *   
 */    
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 圖片後面追加的字串 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("圖片" + id);    
        docPr.setDescr("");    
    }    
}    

第三步，上核心程式碼

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

說明：inputStream代表你要放入word的流

最後

//把word文件寫到檔案中
File newfile=new File("newfile.docx");
FileOutputStream fos = new FileOutputStream(newfile); 
document.write(fos);

雖然寫出來了，但是感覺自己還停留在會用，不瞭解其中為什麼要這麼用的含義，研究的不深