使用 Apache POI 更改图像布局或在 DOCX 中换行 [英] Change image layout or wrap in DOCX with Apache POI

问题描述

我以编程方式将图像粘贴到 docx 中.但结果布局不适合我.面临缺乏文档.我需要更改图像包装(布局).例如现在我有这个:

I paste image into docx programmatically. But in result the layout does not suit me. Faced a lack of documentation. I need to change image wrap (layout). For example now I have this:

但是想要这个:

UPD1:我所做的:遍历段落，然后遍历运行并找到带有特殊书签的特定运行.在这次运行中，我添加了图片:

UPD1: What I do: iterate through the paragraphs, then through the runs and find certain run with special bookmark. In this run I add picture:

XWPFPicture pic =  run.addPicture(
        new ByteArrayInputStream(picSource),
        Document.PICTURE_TYPE_PNG,
        "pic",
        Units.toEMU(100),
        Units.toEMU(30));

UPD2:调查了这门课中有趣的事情:

UPD2: Investigated something interesting inside this class:

org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTAnchor

方法 setWrapTight(CTWrapTight var1).可能是吧.仍然不知道如何将它应用到我的代码中.

method setWrapTight(CTWrapTight var1). May be is it. By still don't know how to apply it to my code.

UPD3:最后我来到了这个(currentRun - 用我们的图片运行):

UPD3: Finally I came to this (currentRun - run with our picture):

    CTWrapTight ctWrapTight = currentRun.getCTR().getDrawingList().get(0).addNewAnchor().addNewWrapTight();
 CTWrapPath ctWrapPath = ctWrapTight.addNewWrapPolygon();

 CTPoint2D ctStart = ctWrapPath.addNewStart();
 ctStart.setX(0L);
 ctStart.setY(0L);

 CTPoint2D ctLineTo1 = ctWrapPath.addNewLineTo();
 CTPoint2D ctLineTo2 = ctWrapPath.addNewLineTo();
 CTPoint2D ctLineTo3 = ctWrapPath.addNewLineTo();

 ctLineTo1.setX(21384L);
 ctLineTo1.setY(20520L);

 ctLineTo2.setX(21384L);
 ctLineTo2.setY(0L);

 ctLineTo3.setX(0L);
 ctLineTo3.setY(0L);

ctWrapTight.setWrapText(STWrapText.BOTH_SIDES);

但是当我尝试打开它时它会分解文档:

But it's break down document when I try to open it:

我们很抱歉.我们无法打开文档，因为我们发现了一个问题其内容.

We're sorry. We can't open document because we found a problem with its contents.

依赖是:

<dependency>
        <groupId>org.apache.poi</groupId>
        <artifactId>poi-ooxml</artifactId>
        <version>3.17</version>
    </dependency>
    <dependency>
        <groupId>org.apache.poi</groupId>
        <artifactId>poi-ooxml-schemas</artifactId>
        <version>3.17</version>
    </dependency>
    <dependency>
        <groupId>org.apache.poi</groupId>
        <artifactId>ooxml-schemas</artifactId>
        <version>1.3</version>
    </dependency>

推荐答案

虽然您已经找到了合适的类来使用 - CTAnchor 和后继 - 还需要考虑 锚点的 XML 模式定义.这表明需要更多的职责元素，而不仅仅是定义包装的元素.因此，逐类使用 org.openxmlformats.schemas.drawingml.x2006 您可能正在编写页面明智的代码.我对此类问题的首选解决方案是提供 XML，其中所有需要的元素都由某些变量更新.然后可以解析此 XML 以获得所需的对象.

While you already found the right classes to use - CTAnchor and successors - there is also the need considering the XML Schema definition of anchor. And this states there are many more duty elements required than only the ones which are defining wrapping. So using class by class of org.openxmlformats.schemas.drawingml.x2006 you are probably coding page wise code. My preferred solution for such problems is providing XML having all needed elements updated by some variables. This XML then can be parsed to get the needed object.

示例:

import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;

import org.apache.poi.xwpf.usermodel.*;

import org.apache.poi.util.Units;

import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDrawing;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGraphicalObject;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTAnchor;

public class WordInsertPictures {

 private static CTAnchor getAnchorWithGraphic(CTGraphicalObject graphicalobject, 
                                              String drawingDescr, int width, int height,
                                              int left, int top) throws Exception {

  String anchorXML = 
   "<wp:anchor xmlns:wp=\"http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing\" "
  +"simplePos=\"0\" relativeHeight=\"0\" behindDoc=\"1\" locked=\"0\" layoutInCell=\"1\" allowOverlap=\"1\">"
  +"<wp:simplePos x=\"0\" y=\"0\"/>"
  +"<wp:positionH relativeFrom=\"column\"><wp:posOffset>"+left+"</wp:posOffset></wp:positionH>"
  +"<wp:positionV relativeFrom=\"paragraph\"><wp:posOffset>"+top+"</wp:posOffset></wp:positionV>"
  +"<wp:extent cx=\""+width+"\" cy=\""+height+"\"/>"
  +"<wp:effectExtent l=\"0\" t=\"0\" r=\"0\" b=\"0\"/>"
  +"<wp:wrapTight wrapText=\"bothSides\">"
  +"<wp:wrapPolygon edited=\"0\">"
  +"<wp:start x=\"0\" y=\"0\"/>"
  +"<wp:lineTo x=\"0\" y=\"21600\"/>" //Square polygon 21600 x 21600 leads to wrap points in fully width x height
  +"<wp:lineTo x=\"21600\" y=\"21600\"/>"// Why? I don't know. Try & error ;-).
  +"<wp:lineTo x=\"21600\" y=\"0\"/>"
  +"<wp:lineTo x=\"0\" y=\"0\"/>"
  +"</wp:wrapPolygon>"
  +"</wp:wrapTight>"
  +"<wp:docPr id=\"1\" name=\"Drawing 0\" descr=\""+drawingDescr+"\"/><wp:cNvGraphicFramePr/>"
  +"</wp:anchor>";

  CTDrawing drawing = CTDrawing.Factory.parse(anchorXML);
  CTAnchor anchor = drawing.getAnchorArray(0);
  anchor.setGraphic(graphicalobject);
  return anchor;  
 }

 public static void main(String[] args) throws Exception {

  XWPFDocument document = new XWPFDocument();
  XWPFParagraph paragraph = document.createParagraph();
  XWPFRun run = paragraph.createRun();

  run.setText("The picture in line: ");

  InputStream in = new FileInputStream("samplePict.jpeg");
  run.addPicture(in, Document.PICTURE_TYPE_JPEG, "samplePict.jpeg", Units.toEMU(100), Units.toEMU(30));
  in.close();  

  run.setText(" text after the picture.");

  paragraph = document.createParagraph();

  run = paragraph.createRun();
  in = new FileInputStream("samplePict.jpeg");
  run.addPicture(in, Document.PICTURE_TYPE_JPEG, "samplePict.jpeg", Units.toEMU(100), Units.toEMU(30));
  in.close();  
  CTDrawing drawing = run.getCTR().getDrawingArray(0);
  CTGraphicalObject graphicalobject = drawing.getInlineArray(0).getGraphic();
  CTAnchor anchor = getAnchorWithGraphic(graphicalobject, "samplePict.jpeg", 
                                         Units.toEMU(100), Units.toEMU(30), 
                                         Units.toEMU(30), Units.toEMU(0));
  drawing.setAnchorArray(new CTAnchor[]{anchor});
  drawing.removeInline(0);

  run = paragraph.createRun();
  run.setText("The previous picture is anchored wrapTight. The previous picture is anchored wrapTight. The previous picture is anchored wrapTight. The previous picture is anchored wrapTight. The previous picture is anchored wrapTight. The previous picture is anchored wrapTight.");

  document.write(new FileOutputStream("WordInsertPictures.docx"));
  document.close();
 }
}

这篇关于使用 Apache POI 更改图像布局或在 DOCX 中换行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！