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);    }  } }