java - Poi 幻灯片格式

Question

我已经使用 apache POI 创建了一个 PPT 演示文稿，我想使用以下代码为 PPT 添加标题。但它会抛出编译错误

The type of the expression must be an array type but it resolved to List

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

      //creating presentation
      XMLSlideShow ppt = new XMLSlideShow();            

      //getting the slide master object
      XSLFSlideMaster slideMaster = ppt.getSlideMasters()[0];

      //get the desired slide layout 
      XSLFSlideLayout titleLayout = slideMaster.getLayout(SlideLayout.TITLE);

      //creating a slide with title layout
      XSLFSlide slide1 = ppt.createSlide(titleLayout);

      //selecting the place holder in it 
      XSLFTextShape title1 = slide1.getPlaceholder(0); 

Answer 1

这里的问题是 ppt.getSlideMasters()返回List<XSLFSlideMaster>而不是XSLFSlideMaster[]正如你所期待的。所以，对于你要解决的问题，下面的代码应该就可以了:

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

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


public class Slideshow {
    public static void main(String[] args) throws IOException {
        //creating presentation
        try (FileOutputStream out = new FileOutputStream("example.ppt");
             XMLSlideShow ppt = new XMLSlideShow();) {
            //getting the slide master object
            XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0);

            //get the desired slide layout
            XSLFSlideLayout titleLayout = slideMaster.getLayout(SlideLayout.TITLE);

            //creating a slide with title layout
            XSLFSlide slide1 = ppt.createSlide(titleLayout);

            //selecting the place holder in it
            XSLFTextShape title1 = slide1.getPlaceholder(0);
            title1.setText("Text title");
            ppt.write(out);
        }
    }
}

结果将是: