解决POI3.10 添加图片不成功的问题

野性酷女 2022-06-16 09:53 973阅读 0赞

问题：

> 当我用poi3.10去生成word文件时，文字可以正常生成，而图片却加载不出来，并且用offic2007版本的无法打开word文件

问题：

POI3.10在添加图片的时候自身有一个BUG，自带的addpicture()方法无法使图片正常生成在word上显示

解决方式：

> 解决方式有几种，这里只介绍一种方式。
> 
> 一、创建一个类，不用做任何修改，只需导入各种需要的包即可，
> 
> 新建类：CustomXWPFDocument继承XWPFDocument
> 
> 添加方法：createPic
> 
>     package org.uz.dxt.common;
>     
>     
>     import org.apache.poi.xwpf.usermodel.XWPFDocument;
>     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;
>     
>     
>     public class CustomXWPFDocument extends XWPFDocument {
>     public void createPic(String blipId,int id, int width, int height,CTInline inline) {
>     final int EMU = 9525;
>     width *= EMU;
>     height *= EMU;
>     //String blipId = getAllPictures().get(id).getPackageRelationship().getId();
>     
>     
>     //CTInline inline = createParagraph().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>";
>     
>     
>     //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("Picture " + id);
>     docPr.setDescr("Generated");
>        }
>     }
> 
>   
>   
> 
> 
> 二、修改你自定义的下载类的对象，改为上面新建的类，由于继承了XWPFDocument，所以不会产生影响
> 
> ![Center][]  
> 
> 
>   
> 
> 
> ## 三、修改图片生成部分的接口:使用doc.addPictureData()方法 ##

旧代码：

XWPFParagraph p9 = doc.createParagraph();
    p9.setAlignment(ParagraphAlignment.CENTER);
    p9.setVerticalAlignment(TextAlignment.CENTER);
    // 图片
    XWPFRun r8 = p9.createRun();
    for (Attachment attachment : fileList) {
    // 文件类型
    String type = attachment.getType();
                       int fileSize=Integer.parseInt(attachment.getFileSize());
    if ("01".equals(type)&&fileSize>0) {
    String fileName = attachment.getFileName()
    //获取图片流
    InputStream in = getImage(HOST_URL+attachment.getFileUrl()+"?userId="+userId);//获取图片流
    r8.addPicture(in, XWPFDocument.PICTURE_TYPE_JPEG,//此方法poi有缺陷
    fileName, Units.toEMU(300), Units.toEMU(400));
    r8.addBreak();
    fileName = StringUtils.substringBefore(fileName, ".");
    r8.setText(fileName);
    r8.addBreak();
    in.close();
    }

修改之后的代码：

>   
> 
> 
>     for (Attachment attachment : fileList) {
>     // 文件类型
>     String type = attachment.getType();
>                        
>     if ("02".equals(type)) {
>     String fileName = attachment.getFileName();
>     //获取图片流
>     InputStream in = getImage(ConfigParams.NEW_DOWNLOAD_URL+attachment.getFileUrl());
>     CTInline ctinline=r8.getCTR().addNewDrawing().addNewInline();//设置段落行
>     String id = doc.addPictureData(in, XWPFDocument.PICTURE_TYPE_JPEG);//添加图片数据
>     int id2=doc.getAllPackagePictures().size()+1;
>     doc.createPic(id,id2, 259, 259,ctinline);//添加图片
>     fileName = StringUtils.substringBefore(fileName, ".");
>     r8.setText(fileName);
>     r8.addBreak(BreakType.PAGE);
>     in.close(); 
>     }
> 
>   
>   
>

做上述修改

运行可以在word中查看到图片。

[Center]: /images/20220616/de94d6f3d36f426fb65870c277d1e6d0.png