How can I convert a Word document to PDF?

Question

How can I convert a Word document to PDF where the document contains various things, such as tables. When trying to use iText, the original document looks different to the c

Answer 1

Using JACOB call Office Word is a 100% perfect solution. But it only supports on Windows platform because need Office Word installed.

1. Download JACOB archive (the latest version is 1.19);
2. Add jacob.jar to your project classpath;
3. Add jacob-1.19-x32.dll or jacob-1.19-x64.dll (depends on your jdk version) to ...\Java\jdk1.x.x_xxx\jre\bin

4. Using JACOB API call Office Word to convert doc/docx to pdf.

   public void convertDocx2pdf(String docxFilePath) {
   File docxFile = new File(docxFilePath);
   String pdfFile = docxFilePath.substring(0, docxFilePath.lastIndexOf(".docx")) + ".pdf";
   
   if (docxFile.exists()) {
       if (!docxFile.isDirectory()) { 
           ActiveXComponent app = null;
   
           long start = System.currentTimeMillis();
           try {
               ComThread.InitMTA(true); 
               app = new ActiveXComponent("Word.Application");
               Dispatch documents = app.getProperty("Documents").toDispatch();
               Dispatch document = Dispatch.call(documents, "Open", docxFilePath, false, true).toDispatch();
               File target = new File(pdfFile);
               if (target.exists()) {
                   target.delete();
               }
               Dispatch.call(document, "SaveAs", pdfFile, 17);
               Dispatch.call(document, "Close", false);
               long end = System.currentTimeMillis();
               logger.info("============Convert Finished：" + (end - start) + "ms");
           } catch (Exception e) {
               logger.error(e.getLocalizedMessage(), e);
               throw new RuntimeException("pdf convert failed.");
           } finally {
               if (app != null) {
                   app.invoke("Quit", new Variant[] {});
               }
               ComThread.Release();
           }
       }
   }
   

   }