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java實(shí)現(xiàn)PPT轉(zhuǎn)PDF出現(xiàn)中文亂碼問題的解決方法

 更新時(shí)間:2015年11月11日 11:38:54   投稿:lijiao  
這篇文章主要為大家詳細(xì)介紹了java實(shí)現(xiàn)PPT轉(zhuǎn)PDF出現(xiàn)中文亂碼問題的解決方法,進(jìn)行了詳細(xì)的問題分析,需要的朋友可以參考下

ppt轉(zhuǎn)成pdf,原理是ppt轉(zhuǎn)成圖片,再用圖片生產(chǎn)pdf,過程有個(gè)問題,不管是ppt還是pptx,都遇到中文亂碼,編程方框的問題,其中ppt后綴網(wǎng)上隨便找就有解決方案,就是設(shè)置字體為統(tǒng)一字體,pptx如果頁面是一種中文字體不會有問題,如果一個(gè)頁面有微軟雅黑和宋體,就會導(dǎo)致部分中文方框,懷疑是poi處理的時(shí)候,只讀取第一種字體,所以導(dǎo)致多個(gè)中文字體亂碼。

百度和谷歌都找了很久,有看到說apache官網(wǎng)有人說是bug,但他們回復(fù)說是字體問題,這個(gè)問題其實(shí)我覺得poi可能可以自己做,讀取原來字體設(shè)置成當(dāng)前字體,不過性能應(yīng)該會有很多消耗,反正我估計(jì)很多人跟我一樣花費(fèi)大量時(shí)間找解決方案,網(wǎng)上幾乎沒有現(xiàn)成的方案。自己也是一步步嘗試,最終找到解決辦法,ppt格式的就不說了網(wǎng)上找得到,pptx后綴的網(wǎng)上我是沒找到。

問題前的pptx轉(zhuǎn)成圖片:

解決后的pptx轉(zhuǎn)成圖片:

解決方法:
讀取每個(gè)shape,將文字轉(zhuǎn)成統(tǒng)一的字體,網(wǎng)上找到的那段代碼不可行,我自己改的方案如下:       

for( XSLFShape shape : slide[i].getShapes() ){
  if ( shape instanceof XSLFTextShape ){
  XSLFTextShape txtshape = (XSLFTextShape)shape ;
  System.out.println("txtshape" + (i+1) + ":" + txtshape.getShapeName());
  System.out.println("text:" +txtshape.getText());
  
  for ( XSLFTextParagraph textPara : txtshape.getTextParagraphs() ){
  List<XSLFTextRun> textRunList = textPara.getTextRuns();
  for(XSLFTextRun textRun: textRunList) {
  textRun.setFontFamily("宋體");
  }
  }
  }
 }

完整代碼如下(除了以上自己的解決方案,大部分是stackoverflow上的代碼):

public static void convertPPTToPDF(String sourcepath, String destinationPath, String fileType) throws Exception {
 FileInputStream inputStream = new FileInputStream(sourcepath);
 double zoom = 2;
 AffineTransform at = new AffineTransform();
 at.setToScale(zoom, zoom);
 Document pdfDocument = new Document();
 PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument, new FileOutputStream(destinationPath));
 PdfPTable table = new PdfPTable(1);
 pdfWriter.open();
 pdfDocument.open();
 Dimension pgsize = null;
 Image slideImage = null;
 BufferedImage img = null;
 if (fileType.equalsIgnoreCase(".ppt")) {
 SlideShow ppt = new SlideShow(inputStream);
 inputStream.close();
 pgsize = ppt.getPageSize();
 Slide slide[] = ppt.getSlides();
 pdfDocument.setPageSize(new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight()));
 pdfWriter.open();
 pdfDocument.open();
 for (int i = 0; i < slide.length; i++) {
  
 TextRun[] truns = slide[i].getTextRuns(); 
 for ( int k=0;k<truns.length;k++){ 
  RichTextRun[] rtruns = truns[k].getRichTextRuns(); 
  for(int l=0;l<rtruns.length;l++){ 
//  int index = rtruns[l].getFontIndex(); 
//  String name = rtruns[l].getFontName(); 
  rtruns[l].setFontIndex(1); 
  rtruns[l].setFontName("宋體");  
  } 
 } 
  
  
 img = new BufferedImage((int) Math.ceil(pgsize.width * zoom), (int) Math.ceil(pgsize.height * zoom), BufferedImage.TYPE_INT_RGB);
 Graphics2D graphics = img.createGraphics();
 graphics.setTransform(at);
 
 graphics.setPaint(Color.white);
 graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
 slide[i].draw(graphics);
 graphics.getPaint();
 slideImage = Image.getInstance(img, null);
 table.addCell(new PdfPCell(slideImage, true));
 }
 }
 if (fileType.equalsIgnoreCase(".pptx")) {
 XMLSlideShow ppt = new XMLSlideShow(inputStream);
 pgsize = ppt.getPageSize();
 XSLFSlide slide[] = ppt.getSlides();
 pdfDocument.setPageSize(new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight()));
 pdfWriter.open();
 pdfDocument.open();
 
 
 for (int i = 0; i < slide.length; i++) {
 for( XSLFShape shape : slide[i].getShapes() ){
  if ( shape instanceof XSLFTextShape ){
  XSLFTextShape txtshape = (XSLFTextShape)shape ;
  // System.out.println("txtshape" + (i+1) + ":" + txtshape.getShapeName());
  //System.out.println("text:" +txtshape.getText());
  
  for ( XSLFTextParagraph textPara : txtshape.getTextParagraphs() ){
  List<XSLFTextRun> textRunList = textPara.getTextRuns();
  for(XSLFTextRun textRun: textRunList) {
  textRun.setFontFamily("宋體");
  }
  }
  }
 }
 img = new BufferedImage((int) Math.ceil(pgsize.width * zoom), (int) Math.ceil(pgsize.height * zoom), BufferedImage.TYPE_INT_RGB);
 Graphics2D graphics = img.createGraphics();
 graphics.setTransform(at);
 graphics.setPaint(Color.white);
 graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
 slide[i].draw(graphics);
  
  
// FileOutputStream out = new FileOutputStream("src/main/resources/test"+i+".jpg"); 
// javax.imageio.ImageIO.write(img, "jpg", out);
  
  
  
 graphics.getPaint();
 slideImage = Image.getInstance(img, null);
 table.addCell(new PdfPCell(slideImage, true));
 }
 }
 pdfDocument.add(table);
 pdfDocument.close();
 pdfWriter.close();
 System.out.println("Powerpoint file converted to PDF successfully");
 }

maven配置:

<dependency>
 <groupId>org.apache.poi</groupId>
 <artifactId>poi</artifactId>
 <!-- <version>3.13</version> -->
 <version>3.9</version>
 </dependency>
 <dependency>
 <groupId>org.apache.poi</groupId>
 <artifactId>poi-ooxml</artifactId>
 <!-- <version>3.10-FINAL</version> -->
 <version>3.9</version>
 </dependency>
 
 <dependency>
 <groupId>com.itextpdf</groupId>
 <artifactId>itextpdf</artifactId>
 <version>5.5.7</version>
 </dependency>
 
 <dependency>
 <groupId>com.itextpdf.tool</groupId>
 <artifactId>xmlworker</artifactId>
 <version>5.5.7</version>
 </dependency>
 <dependency>
 <groupId>org.apache.poi</groupId>
 <artifactId>poi-scratchpad</artifactId>
 <!-- <version>3.12</version> -->
 <version>3.9</version>
 </dependency>

上面就是為大家分享的java實(shí)現(xiàn)PPT轉(zhuǎn)PDF出現(xiàn)中文亂碼問題的解決方法,希望對大家的學(xué)習(xí)有所幫助。

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