Java平台下利用aspose转word为PDF实现文档在线预览

importcom.aspose.words.Document;
importcom.aspose.words.License;
importcom.aspose.words.SaveFormat;
importorg.slf4j.Logger;
importorg.slf4j.LoggerFactory;
importorg.springframework.web.multipart.MultipartFile;

import java.io.*;

/*** <b><code>Word2PdfUtil</code></b>
 * <p>
 * Description: word to pdf util.
 * <p>
 * <b>Creation Time:</b> 2018/5/15 15:10
 *
 * @author* @date 2018 /5/15
 * @sinceJDK 1.7
 */
public classWord2PdfUtil {

    /*** The constant LOG.
     *
     */
    private static final Logger LOG = LoggerFactory.getLogger(Word2PdfUtil.class);

    /*** 获取license
     *
     * @return
     */
    private static booleangetLicense() {
        boolean result = false;
        try{
            //凭证
            String licenseStr =
                    "<License>
" +
                    "  <Data>
" +
                    "    <Products>
" +
                    "      <Product>Aspose.Total for Java</Product>
" +
                    "      <Product>Aspose.Words for Java</Product>
" +
                    "    </Products>
" +
                    "    <EditionType>Enterprise</EditionType>
" +
                    "    <SubscriptionExpiry>20991231</SubscriptionExpiry>
" +
                    "    <LicenseExpiry>20991231</LicenseExpiry>
" +
                    "    <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>
" +
                    "  </Data>
" +
                    "  <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>
" +
                    "</License>";
            InputStream license = new ByteArrayInputStream(licenseStr.getBytes("UTF-8"));
            License asposeLic = newLicense();
            asposeLic.setLicense(license);
            result = true;
        } catch(Exception e) {
            LOG.error("error:", e);
        }
        returnresult;
    }

    /*** Word 2 pdf.
     *
     * @parammultipartFile the multipart file
     * @parampdfFilePath   the pdf file path
     */
    public static voidword2Pdf(MultipartFile multipartFile, String pdfFilePath) {
        FileOutputStream fileOS = null;
        //验证License
        if (!getLicense()) {
            LOG.error("验证License失败！");
            return;
        }
        try{
            Document doc = newDocument(multipartFile.getInputStream());
            fileOS = new FileOutputStream(newFile(pdfFilePath));
            //保存转换的pdf文件
doc.save(fileOS, SaveFormat.PDF);
        } catch(Exception e) {
            LOG.error("error:", e);
        } finally{
            try{
                if(fileOS != null){
                    fileOS.close();
                }
            } catch(IOException e) {
                LOG.error("error:", e);
            }
        }
    }
}  

遇到的问题

WORD转PDF功能在windows下转换正常，Linux下中文乱码

因为转换时需要系统里有word文档里使用的字体，当找不到该字体的时候就会乱码。
Linux下默认只有很少的中文字体，所以很可能会出现中文乱码问题。
解决办法也很简单，只需在Linux系统中添加常用的字体即可。