将doc、docx、txt转换为pdf

package com.yyn.transition_to_pdf;

import java.io.File;

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
//D:\Java\jdk1.6.0\bin;C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin
public class Transition_Word {
String filename =null;
String toFilename = null ;
static final int wdDoNotSaveChanges = 0;// 不保存待定的更改。
static final int wdFormatPDF = 17;// PDF 格式
public void Transition_word(String fromPath, String toPath){
filename =fromPath;
toFilename= toPath ;
toFilename = filename.split("\\.")[0] + ".pdf";
System.out.println("启动Word...");
long start = System.currentTimeMillis();
ActiveXComponent app = null;
try {
app = new ActiveXComponent("Word.Application");
app.setProperty("Visible", false);

Dispatch docs = (Dispatch) app.getProperty("Documents").toDispatch();
System.out.println("打开文档..." + filename);
Dispatch doc = Dispatch.call(docs,//
"Open", //
filename,// FileName
false,// ConfirmConversions
true // ReadOnly
).toDispatch();

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);

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);
}
}
}