java使用jacob.jar将word转pdf

package core.util;
 
import java.io.File;
 
import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
 
public class Word2PDF {
 static final int wdDoNotSaveChanges = 0;// 不保存待定的更改。 
 static final int wdFormatPDF = 17;// PDF 格式 
  
 public static void wordToPdf(String wordpath,String pdfpath) { 
 
   System.out.println("启动Word..."); 
   long start = System.currentTimeMillis(); 
   ActiveXComponent app = null; 
   try { 
  //打开word应用程序
     app = new ActiveXComponent("Word.Application"); 
  ////设置应用操作是文档不在明面上显示，只在后台静默处理。 
     app.setProperty("Visible", false); 
  //获得文档集合，用来操作我们需要处理的文档.
     Dispatch docs = app.getProperty("Documents").toDispatch(); 
     System.out.println("打开文档..." + wordpath); 
  //打开word文档
     Dispatch doc = Dispatch.call(docs,// 
         "Open", // 
         wordpath,// FileName 
         false,// ConfirmConversions 
         true // ReadOnly 
         ).toDispatch(); 
  
     System.out.println("转换文档到PDF..." + pdfpath); 
     File tofile = new File(pdfpath); 
  //创建存放pdf的文件夹
     if (tofile.exists()) { 
       tofile.delete(); 
     } 
  //将word另存为pdf
     Dispatch.call(doc,// 
         "SaveAs", // 
         pdfpath, // FileName 
         wdFormatPDF); 
     //关闭word文档
     Dispatch.call(doc, "Close", false); 
     long end = System.currentTimeMillis(); 
     System.out.println("转换完成..用时：" + (end - start) + "ms."); 
   } catch (Exception e) { 
     System.out.println("========Error:文档转换失败：" + e.getMessage()); 
   } finally { 
     if (app != null) 
       app.invoke("Quit", wdDoNotSaveChanges); 
   } 
 } 
}