java利用jacob将word转pdf

package com.casf.hn.core.util;

import java.io.File;

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.ComThread;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;

/**
 * 效果最好的一种方法，但是需要 window 环境，而且速度是最慢的需要安装 msofficeWord 以及 SaveAsPDFandXPS.exe (
 * word 的一个插件，用来把 word 转化为 pdf，可以不用安装，本次未安装测试通过 )
 * 
 * 
 *
 */
public class WordToPdf {

 private static final int wdFormatPDF = 17; // PDF 格式

 public void wordToPDF(String sfileName, String toFileName) {

  System.out.println("启动 Word...");
  long start = System.currentTimeMillis();
  ActiveXComponent app = null;
  Dispatch doc = null;
  try {
   app = new ActiveXComponent("Word.Application");
   app.setProperty("Visible", new Variant(false));
   Dispatch docs = app.getProperty("Documents").toDispatch();
   doc = Dispatch.call(docs, "Open", sfileName).toDispatch();
   System.out.println("打开文档..." + sfileName);
   System.out.println("转换文档到 PDF..." + toFileName);
   File tofile = new File(toFileName);
   if (tofile.exists()) {
    tofile.delete();
   }
   Dispatch.call(doc, "SaveAs", toFileName, // FileName
     wdFormatPDF);
   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 {
   Dispatch.call(doc, "Close", false);
   System.out.println("关闭文档");
   if (app != null)
    app.invoke("Quit", new Variant[] {});
  }
  // 如果没有这句话,winword.exe进程将不会关闭
  ComThread.Release();
 }

 public static void main(String[] args) {
  WordToPdf d = new WordToPdf();
  d.wordToPDF("D:\\cssj\\xxxx.doc", "D:\\cssj\\xxxx.pdf");
 }

}