在Java中设置pptx主题

Question

我试图使用java以编程方式合并一些pptx文档.我想知道如何使用Apache POI实质上这样做,但我试图合并的文件不起作用.

经过重要的搜索和反复试验,我发现原因是pptx文档没有主题信息(例如,如果我点击powerpoint并检查幻灯片主视图是否为空白).如果我转到设计功能区中的主题并选择"办公室主题"或其他主题,则保存.文件将迷人地合并.否则,我遇到以下错误:

Exception in thread "main" java.lang.IllegalArgumentException: Failed to fetch default style for otherStyle and level=0
    at org.apache.poi.xslf.usermodel.XSLFTextParagraph.getDefaultMasterStyle(XSLFTextParagraph.java:1005)
    at org.apache.poi.xslf.usermodel.XSLFTextParagraph.fetchParagraphProperty(XSLFTextParagraph.java:1029)
    at org.apache.poi.xslf.usermodel.XSLFTextParagraph.isBullet(XSLFTextParagraph.java:654)
    at org.apache.poi.xslf.usermodel.XSLFTextParagraph.copy(XSLFTextParagraph.java:1044)
    at org.apache.poi.xslf.usermodel.XSLFTextShape.copy(XSLFTextShape.java:631)
    at org.apache.poi.xslf.usermodel.XSLFSheet.appendContent(XSLFSheet.java:358)
    at com.apsiva.main.Snippet.main(Snippet.java:28)

以下是我运行的代码:

package com.apsiva.main;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.xslf.usermodel.SlideLayout;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.apache.poi.xslf.usermodel.XSLFSlideLayout;

public class Snippet {
    /** Merge the pptx files in the array <decks> to the desired destination 
         * chosen in <outputPath> */
        public static void main(String[] args) {
            try {
                FileInputStream empty = new FileInputStream("C:/Users/Alex/workspace/OutputWorker/tmp/base2.pptx");
                XMLSlideShow pptx;

                pptx = new XMLSlideShow(empty);
                XSLFSlideLayout defaultLayout = pptx.getSlideMasters()[0].getLayout(SlideLayout.TITLE_AND_CONTENT);

                FileInputStream is = new FileInputStream("C:/Users/Alex/workspace/OutputWorker/tmp/noWork.pptx");
//              FileInputStream is = new FileInputStream("C:/Users/Alex/workspace/OutputWorker/tmp/works2.pptx");
                XMLSlideShow src = new XMLSlideShow(is);
                is.close();
                for (XSLFSlide srcSlide: src.getSlides()){
                    pptx.createSlide(defaultLayout).appendContent(srcSlide);
                }
                FileOutputStream out = new FileOutputStream("C:/POI-TEST-OUTPUT.pptx");
                pptx.write(out);
                out.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
}

我想让这些文件合并,我相信解决方案是以编程方式将主题分配给文件.怎么做到呢？

谢谢您的考虑!

Answer 1

/ApachePOI/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFTextParagraph.java

CTTextParagraphProperties getDefaultMasterStyle()

添加

if( o.length == 0 ) {
    return null;
}