ppt를 pdf 로 변환 시킬떄 코드좀 봐주세요 오류가 심각해요 ㅜ

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/*package poly.util; import java.awt.Color;import java.awt.Dimension;import java.awt.Graphics2D;import java.awt.geom.Rectangle2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.util.UUID; import javax.imageio.ImageIO;import org.apache.poi.hslf.model.Slide;import org.apache.poi.hslf.usermodel.SlideShow; import com.itextpdf.text.Document;import com.itextpdf.text.DocumentException;import com.itextpdf.text.Image;import com.itextpdf.text.pdf.PdfWriter; public class PPTtoPDFConverter{ public static String PPTtoPDFConverter(String fileName) throws IOException,DocumentException { System.out.println(&#34;start&#34;); System.out.println(fileName); String filePath&#61;&#34;C:\Users\data12\Desktop\&#34;; //String filePPT&#61;&#34;C:\Users\data12\Desktop\han.ppt&#34;; //1. ppt 파일을 불러옴 FileInputStream inputStream &#61; new FileInputStream(filePath&#43;fileName); SlideShow ppt&#61;new SlideShow(inputStream); inputStream.close(); //2. 이미지 그리기 Dimension pageSize&#61;ppt.getPageSize(); Slide[] slide &#61; ppt.getSlides(); for(int i&#61;0 ; i<slide.length; i&#43;&#43;) { BufferedImage image &#61; new BufferedImage(pageSize.width,pageSize.height,BufferedImage.TYPE_INT_RGB); Graphics2D graphics &#61;image.createGraphics(); graphics.setPaint(Color.white); //이미지 영역을 클리어 graphics.fill(new Rectangle2D.Float(0,0,pageSize.width,pageSize.height)); slide[i].draw(graphics); File dir &#61; new File(filePath&#43;&#34;tempImg/&#34;); //폴더여부 확인 if(!dir.isDirectory()) { dir.mkdirs(); } FileOutputStream fos &#61;new FileOutputStream(dir&#43;&#34;temp&#34;&#43;(i&#43;1)&#43;&#34;.png&#34;); ImageIO.write(image,&#34;png&#34;, fos); } //3.IMAGE에서 PDF Document document &#61; new Document(); File dir &#61; new File(filePath&#43;&#34;presentationPDF/&#34;); if(!dir.isDirectory()) { dir.mkdirs(); } String pdfFileName&#61;&#34;presentationPDF/&#34;&#43;UUID.randomUUID().toString(); PdfWriter.getInstance(document,new FileOutputStream(filePath&#43;pdfFileName)); document.open(); System.out.println(&#34;pdf위치&#34;&#43;pdfFileName); for(int i &#61; 1 ; i<&#61;slide.length;i&#43;&#43;) { String imagePath &#61; filePath&#43;&#34;tempImg/temp&#34;&#43;i&#43;&#34;.png&#34;; Image image &#61; Image.getInstance(imagePath); document.add(image); //4. Image 삭제 File file &#61;new File(imagePath); file.delete(); } document.close(); return pdfFileName; } }*/ 이 코드를 통해 ppt를 이미지로 변환시키고 또 변환시킨 이미지로 pdf 변환 시키려고 하면 이와 같은 오류 가 뜹니다 .11월 05, 2018 6:05:32 오후 org.apache.catalina.core.StandardWrapperValve invoke심각: Servlet.service() for servlet [DispatherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007&#43; XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)] with root causeorg.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007&#43; XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF) 제가 보기엔 xssf로 바꿔서 하라는거 같은데 어떻게 해야될지 잘몰라서 ㅜ 조금만 도와주세요

lendoris · Answer

spire.PDF for java를 사용해 보세요.

ppt를 pdf 로 변환 시킬떄 코드좀 봐주세요 오류가 심각해요 ㅜ

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