aspose实现Office转Pdf关键代码

aspose实现Office转Pdf关键代码：
jar包：
aspose-words-14.6.0.jar
aspose-cells-10.8.jar
aspose.slides-14.4.0.jar
aspose-diagram-2.1.0.jar

protected void realTransform(InputStream in, OutputStream out) throws IOException
  {
    String lowerFileName = this.fileName.toLowerCase();
    try {
      if ((lowerFileName.endsWith(".xls")) || (lowerFileName.endsWith(".xlsx")) || (lowerFileName.endsWith(".csv"))) {
        Workbook workbook = new Workbook(in);
        workbook.save(out, 13);
      } else if ((lowerFileName.endsWith(".doc")) || (lowerFileName.endsWith(".docx")) || (lowerFileName.endsWith(".rtf"))) {
        Document doc = new Document(in);
        doc.save(out, 40);
      } else if ((lowerFileName.endsWith(".ppt")) || (lowerFileName.endsWith(".pptx")) || (lowerFileName.endsWith(".pps")) || (lowerFileName.endsWith(".ppsx")))
      {
        Presentation ppt = new Presentation(in);
        ppt.save(out, 1);
      } else if ((lowerFileName.endsWith(".vdx")) || (lowerFileName.endsWith(".vsx")) || (lowerFileName.endsWith(".vtx")) || (lowerFileName.endsWith(".vsd")))
      {
        Diagram visio = new Diagram(in);
        visio.save(out, 8);
      }
    } catch (Exception ex) {
      throw new RuntimeException(ex);
    }
  }