java开发利用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");
    }

}