itext word怎麼轉成pdf

import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.util.Iterator;
 import java.util.List;
 import javax.swing.JFileChooser;
 import javax.swing.filechooser.FileNameExtensionFilter;
 import org.apache.poi.xwpf.usermodel.XWPFDocument;
 import org.apache.poi.xwpf.usermodel.XWPFParagraph;
 import org.apache.poi.xwpf.usermodel.XWPFPicture;
 import org.apache.poi.xwpf.usermodel.XWPFPictureData;
 import org.apache.poi.xwpf.usermodel.XWPFRun;
 import com.itextpdf.text.Chunk;
 import com.itextpdf.text.BaseColor;
 import com.itextpdf.text.Document;
 import com.itextpdf.text.Font;
 import com.itextpdf.text.FontFactory;
 import com.itextpdf.text.Image;
 import com.itextpdf.text.pdf.PdfWriter;
 import com.itextpdf.text.PageSize;

 public class WordToPdfConverter{
 public static void main(String[] args){
   selectFiles();
 }
 public static void selectFiles(){
  JFileChooser chooser = new JFileChooser();
  FileNameExtensionFilter filter = new FileNameExtensionFilter("Microsoft Word 2007+", "docx");
  chooser.setFileFilter(filter);
  chooser.setMultiSelectionEnabled(true);
  int returnVal = chooser.showOpenDialog(null);
  if(returnVal == JFileChooser.APPROVE_OPTION) {
   File[] Files=chooser.getSelectedFiles();
   System.out.println("Please wait...");
            for( int i=0;i<Files.length;i++){     
             String wordfile=Files[i].toString();            
             convertWordToPdf(wordfile,wordfile.substring(0,wordfile.indexOf('.'))+".pdf");
             }
   System.out.println("Conversion complete");
          }
 }
 public static void convertWordToPdf(String src, String desc){
  try{
  //create file inputstream object to read data from file 
  FileInputStream fs=new FileInputStream(src);
  //create document object to wrap the file inputstream object
  XWPFDocument doc=new XWPFDocument(fs); 
  //72 units=1 inch
  Document pdfdoc=new Document(PageSize.A4,72,72,72,72);
  //create a pdf writer object to write text to mypdf.pdf file
  PdfWriter pwriter=PdfWriter.getInstance(pdfdoc, new FileOutputStream(desc));
  //specify the vertical space between the lines of text
  pwriter.setInitialLeading(20);
  //get all paragraphs from word docx
  List<XWPFParagraph> plist=doc.getParagraphs();
  
  //open pdf document for writing
  pdfdoc.open();
  for (int i = 0; i < plist.size(); i++) {
   //read through the list of paragraphs
   XWPFParagraph pa = plist.get(i);
   //get all run objects from each paragraph
       List<XWPFRun> runs = pa.getRuns();
       //read through the run objects
       for (int j = 0; j < runs.size(); j++) {       
        XWPFRun run=runs.get(j);
        //get pictures from the run and add them to the pdf document
        List<XWPFPicture> piclist=run.getEmbeddedPictures();
        //traverse through the list and write each image to a file
        Iterator<XWPFPicture> iterator=piclist.iterator();
        while(iterator.hasNext()){
           XWPFPicture pic=iterator.next();
           XWPFPictureData picdata=pic.getPictureData();
           byte[] bytepic=picdata.getData(); 
           Image imag=Image.getInstance(bytepic);
          pdfdoc.add(imag);
              
        }
        //get color code
        int color=getCode(run.getColor());
        //construct font object
        Font f=null;
        if(run.isBold() && run.isItalic())
         f=FontFactory.getFont(FontFactory.TIMES_ROMAN,run.getFontSize(),Font.BOLDITALIC, new BaseColor(color));
           else if(run.isBold())
         f=FontFactory.getFont(FontFactory.TIMES_ROMAN,run.getFontSize(),Font.BOLD, new BaseColor(color));
        else if(run.isItalic())
         f=FontFactory.getFont(FontFactory.TIMES_ROMAN,run.getFontSize(),Font.ITALIC, new BaseColor(color));
        else if(run.isStrike())
         f=FontFactory.getFont(FontFactory.TIMES_ROMAN,run.getFontSize(),Font.STRIKETHRU, new BaseColor(color));
        else
         f=FontFactory.getFont(FontFactory.TIMES_ROMAN,run.getFontSize(),Font.NORMAL, new BaseColor(color));
        //construct unicode string
        String text=run.getText(-1);
        byte[] bs;
        if (text!=null){
         bs=text.getBytes();
         String str=new String(bs,"UTF-8");
         //add string to the pdf document
         Chunk chObj1=new Chunk(str,f);
         pdfdoc.add(chObj1);
        }      
        
       }
       //output new line
       pdfdoc.add(new Chunk(Chunk.NEWLINE));
       }
      //close pdf document  
  pdfdoc.close();
  }catch(Exception e){e.printStackTrace();}
 } 
 public static int getCode(String code){
  int colorCode;
  if(code!=null)
   colorCode=Long.decode("0x"+code).intValue();
  else
   colorCode=Long.decode("0x000000").intValue();
  return colorCode;
 }

 }