Created attachment 37971 [details]
input pptx file

When do copy slide operation, text shape's copy is not working, new slide use the old text shape object's reference. Below is the source code, attachment is input file. Only one attachment is allowed, so no result file is uploaded.


import org.apache.poi.xslf.usermodel.*;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.security.InvalidParameterException;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

public class CopySlideTest {

    private XMLSlideShow ppt;
    private String dirPath = "D:\\workspace\\practice-demo\\file\\input\\";
    private String fileName = "copy-slide-demo.pptx";
    private String outFileName = "copy-slide-demo-out.pptx";

    @Before
    public void setUp() throws Exception {
        String filePath = dirPath + fileName;
        ppt = new XMLSlideShow(new FileInputStream(filePath));
    }

    @Test
    public void testCopySlide() {
        String shapeName = "title";
        XSLFSlide defaultSlide = getSlideByShapeName(shapeName);
        int slideIndex = defaultSlide.getSlideNumber() - 1;
        List<Integer> slideIndexList = new ArrayList<>();
        for (int i =0; i < 3; i ++) {
            if (i == 0) {
                // pass
            } else {
                XSLFSlide newSlide = copySlide(slideIndex);
                slideIndex = newSlide.getSlideNumber() - 1;
            }
            slideIndexList.add(slideIndex);
        }
        for (Integer index : slideIndexList) {
            XSLFSlide slide = ppt.getSlides().get(index);
            replaceText(slide, shapeName, "this is " + slide.getSlideNumber() + " slide.");
        }
    }

    @After
    public void savePpt() throws Exception {
        String filePath = dirPath + outFileName;
        FileOutputStream out = new FileOutputStream(filePath);
        ppt.write(out);
        out.close();
        ppt.close();
    }

    private void replaceText(XSLFSlide slide, String shapeName, String value) {
        XSLFShape shape = getShape(slide, shapeName);
        if (shape == null) {
            return;
        }
        XSLFTextShape textShape = (XSLFTextShape) shape;
        List<XSLFTextParagraph> textParagraphs = textShape.getTextParagraphs();
        for (XSLFTextParagraph textParagraph : textParagraphs) {
            List<XSLFTextRun> textRuns = textParagraph.getTextRuns();
            for (XSLFTextRun textRun : textRuns) {
                textRun.setText(value);
            }
        }
    }

    private XSLFSlide copySlide(int index) {
        XSLFSlideLayout defaultSlideLayout = null;
        List<XSLFSlideMaster> slideMasters = ppt.getSlideMasters();
        for (XSLFSlideMaster slideMaster : slideMasters) {
            for (XSLFSlideLayout slideLayout : slideMaster.getSlideLayouts()) {
                if (Objects.equals(SlideLayout.TITLE_AND_CONTENT, slideLayout.getType())) {
                    defaultSlideLayout = slideLayout;
                    break;
                }
            }
        }
        XSLFSlide slide = ppt.getSlides().get(index);
        XSLFSlide newSlide = ppt.createSlide(defaultSlideLayout).importContent(slide);
        ppt.setSlideOrder(newSlide, slide.getSlideNumber());
        return newSlide;
    }

    private XSLFSlide getSlideByShapeName(String shapeName) {
        List<XSLFSlide> slides = ppt.getSlides();
        for (XSLFSlide slide : slides) {
            List<XSLFShape> shapes = slide.getShapes();
            for (XSLFShape shape : shapes) {
                if (shape.getShapeName().equals(shapeName)) {
                    return slide;
                }
            }
        }
        throw new InvalidParameterException("shape not exist");
    }

    public XSLFShape getShape(XSLFSlide slide, String shapeName) {
        List<XSLFShape> shapes = slide.getShapes();
        for (XSLFShape shape : shapes) {
            if (shape.getShapeName().equals(shapeName)) {
                return shape;
            }
        }
        throw new InvalidParameterException("shape not exist in slide");
    }
}