目前在做一個與文件有關的專案，網上看到的都是利用OpenOffice來轉化word為pdf的，其實侷限性很大，下載那麼大一個軟體，卻只是為了它的服務。所以決定找一下有沒有別的方法，終於遇到了docx4j這個神一樣的JAR包，完美解決了我的問題！不說了，直接上程式碼！

所需Jar包
avalon-framework-4.1.5
commons-io-2.4
docx4j-2.7.1
log4j-1.2.15
serializer-2.7.1
xmlgraphics-commons-1.3
batik-util-1.6-1
commons-logging-1.1.3
fop-0.93
xalan-2.7.1

程式碼:

package in.javadomain;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import org.docx4j.convert.out.pdf.viaXSLFO.PdfSettings;
import org.docx4j.fonts.IdentityPlusMapper;
 

import org.docx4j.fonts.Mapper;
import org.docx4j.fonts.PhysicalFont;
import org.docx4j.fonts.PhysicalFonts;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;

public class Word2Pdf {
    public static void main(String[] args) {
        try {

            long start = System.currentTimeMillis
 
();

            InputStream is = new FileInputStream(
                    new File("D:\\javadomain.docx"));
            WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage
                    .load(is);
            List sections = wordMLPackage.getDocumentModel().getSections();
            for (int i = 0; i < sections.size(); i++) {

                System.out.println("sections Size" + sections.size());
                wordMLPackage.getDocumentModel().getSections().get(i)
                        .getPageDimensions().setHeaderExtent(3000);
            }
            Mapper fontMapper = new IdentityPlusMapper();

            PhysicalFont font = PhysicalFonts.getPhysicalFonts().get(
                    "Comic Sans MS");

            fontMapper.getFontMappings().put("Algerian", font);

            wordMLPackage.setFontMapper(fontMapper);
            PdfSettings pdfSettings = new PdfSettings();
            org.docx4j.convert.out.pdf.PdfConversion conversion = new org.docx4j.convert.out.pdf.viaXSLFO.Conversion(
                    wordMLPackage);

            OutputStream out = new FileOutputStream(new File(
                    "D:\\javadomain.pdf"));
            conversion.output(out, pdfSettings);
            System.err.println("Time taken to Generate pdf  "
                    + (System.currentTimeMillis() - start) + "ms");

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}