下载jacob，位置如下：

jacob.jar 放在 D:\java_1.8_jdk\lib

jacob-1.18-x64.dll和jacob-1.18-x86.dll放在 D:\java_1.8_jdk\bin 

下载office 2007版的，2003版的和2007版的不能同时使用，有时候会因为不存在插件 SaveAsPDFandXPS.exe 而不能正常运行

下面是两种方式：

（一）

package com.word.test;

import java.io.File;

import com.jacob.activeX.ActiveXComponent;

import com.jacob.com.ComThread;

import com.jacob.com.Dispatch;

import com.jacob.com.Variant;

public class WordToPdf {

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" , sourceFile).toDispatch();

doc = Dispatch.invoke(docs,"Open",Dispatch.Method,new Object[] {

sfileName, new Variant(false),new Variant(true) }, new int[1]).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", destFile, 17);

Dispatch.invoke(doc, "SaveAs", Dispatch.Method, new Object[] {

toFileName, new Variant(17) }, new int[1]);

long end = System.currentTimeMillis();

System.out.println("转换完成..用时：" + (end - start) + "ms.");

} catch (Exception e) {

e.printStackTrace();

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("e:\\aaa.docx", "e:\\aaa.pdf");

}

}

（二）

package com.word.test;

import java.io.File;

import java.io.IOException;

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;// word转PDF 格式

public static void main(String[] args) throws IOException {

String source1 = "e:\\aaa.docx";

String target1 = "e:\\aaa.pdf";

Word2Pdf pdf = new Word2Pdf();

pdf.word2pdf(source1, target1);

}

public static boolean word2pdf(String source, String target) {

System.out.println("Word转PDF开始启动...");

long start = System.currentTimeMillis();

ActiveXComponent app = null;

try {

app = new ActiveXComponent("Word.Application");

app.setProperty("Visible", false);

Dispatch docs = app.getProperty("Documents").toDispatch();

System.out.println("打开文档：" + source);

Dispatch doc = Dispatch.call(docs, "Open", source, false, true).toDispatch();

System.out.println("转换文档到PDF：" + target);

File tofile = new File(target);

if (tofile.exists()) {

tofile.delete();

}

Dispatch.call(doc, "SaveAs", target, wdFormatPDF);

Dispatch.call(doc, "Close", false);

long end = System.currentTimeMillis();

System.out.println("转换完成，用时：" + (end - start) + "ms");

return true;

} catch (Exception e) {

System.out.println("Word转PDF出错：" + e.getMessage());

return false;

} finally {

if (app != null) {

app.invoke("Quit", wdDoNotSaveChanges);

}

}

}

}