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【Java】将PPT转化为PDF

作者:淑臣 / 发布于2018/1/25/ 912

jacob的方法，足可以解决这个问题，但是我既然以前曾经做过报表，就想尝试不同的方法。JACOB是一座连接JAVA和微软的桥，所有的解析由微软解析。POI是没有微软解析的那么原汁原味的，所以如果要求高的话，还是使用JACOB。大致思路很简单，将PPT先转化为图片，然后将图片写入PDF。转化图片是用POI，操作PDF使用ITEX。不过这个方法的BUG就是转化图片的POI效果不是很好。导入的包分别是：itextpdf-5.1.3.jar，poi-3.8-20120326.jar，poi-scratchpad-3.8-20120326.jar。

package com.zzk.cn;  
  
import java.awt.Dimension;  
import java.io.File;  
import java.io.FileInputStream;  
import java.io.FileNotFoundException;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.awt.Color;  
import java.awt.Dimension;  
import java.awt.Graphics2D;  
import java.awt.geom.Rectangle2D;  
import java.awt.image.BufferedImage;  
import org.apache.poi.hslf.model.TextRun;  
import org.apache.poi.hslf.record.Slide;  
import org.apache.poi.hslf.usermodel.RichTextRun;  
import org.apache.poi.hslf.usermodel.SlideShow;  
  
public class PPTtoImage {  
    public static void main(String[] args) {  
        // 读入PPT文件  
        File file = new File("D:/书本JVM总结7-9.ppt");  
        doPPTtoImage(file);  
    }  
  
    public static boolean doPPTtoImage(File file) {  
        boolean isppt = checkFile(file);  
        if (!isppt) {  
            System.out.println("你指定的文件不是ppt文档!");  
            return false;  
        }  
        try {  
            FileInputStream is = new FileInputStream(file);  
            SlideShow ppt = new SlideShow(is);  
            is.close();  
            Dimension pgsize = ppt.getPageSize();  
            org.apache.poi.hslf.model.Slide[] slide = ppt.getSlides();  
            for (int i = 0; i < slide.length; i++) {  
                System.out.print("第" + i + "页。");  
                if (slide[i].getNotesSheet() != null  
                        && slide[i].getNotesSheet().getTextRuns() != null) {  
                    // 获取第一个备注  
                    System.out.println("备注："  
                            + slide[i].getNotesSheet().getTextRuns()[0]  
                                    .getText());  
                }  
                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++) {  
                        rtruns[l].setFontIndex(1);  
                        rtruns[l].setFontName("宋体");  
                        // 获取文本列表  
                        System.out.println(rtruns[l].getText());  
                    }  
                }  
                BufferedImage img = new BufferedImage(pgsize.width,  
                        pgsize.height, BufferedImage.TYPE_INT_RGB);  
                Graphics2D graphics = img.createGraphics();  
                graphics.setPaint(Color.white);  
                graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width,  
                        pgsize.height));  
                slide[i].draw(graphics);  
                // 这里设置图片的存放路径和图片的格式(jpeg,png,bmp等等),注意生成文件路径  
                FileOutputStream out = new FileOutputStream("D:/testImage/pict_"  
                        + (i + 1) + ".jpeg");  
                javax.imageio.ImageIO.write(img, "jpeg", out);  
                out.close();  
            }  
            System.out.println("ok");  
            return true;  
        } catch (FileNotFoundException e) {  
            System.out.println(e);  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
        return false;  
    }  
  
    // function 检查文件是否为PPT  
    public static boolean checkFile(File file) {  
        boolean isppt = false;  
        String filename = file.getName();  
        String suffixname = null;  
        if (filename != null && filename.indexOf(".") != -1) {  
            suffixname = filename.substring(filename.indexOf("."));  
            if (suffixname.equals(".ppt")) {  
                isppt = true;  
            }  
            return isppt;  
        } else {  
            return isppt;  
        }  
    }  
}  









package com.zzk.cn;  
  
import java.io.FileOutputStream;  
import java.io.IOException;  
  
import com.itextpdf.text.Document;  
import com.itextpdf.text.DocumentException;  
import com.itextpdf.text.Image;  
import com.itextpdf.text.pdf.PdfWriter;  
  
public class ImagetoPDF {  
      
    public static void main(String[] args) {  
          
        System.out.println("Chapter 6 example 3: using a relative path for HTML");  
          
        // step 1: creation of a document-object  
        Document document = new Document();  
          
        try {  
              
            // step 2:  
            // we create a writer that listens to the document  
            // and directs a PDF-stream to a file  
              
            PdfWriter.getInstance(document, new FileOutputStream("D:/测试图片.pdf"));  
          //  HtmlWriter writer = HtmlWriter.getInstance(document, new FileOutputStream("Chap0603.html"));  
              
          //  writer.setImagepath("../../images/kerstmis/");  
              
            // step 3: we open the document  
            document.open();  
              
            for(int i=1;i<=7;i++) {  
            // step 4: we add content  
            Image jpg = Image.getInstance("D:/testImage/pict_"+i+".jpeg");  
            jpg.scalePercent(50);  
            document.add(jpg);  
            }  
              
        }  
        catch(DocumentException de) {  
            System.err.println(de.getMessage());  
        }  
        catch(IOException ioe) {  
            System.err.println(ioe.getMessage());  
        }  
          
        // step 5: we close the document  
        document.close();  
    }  
}

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