文件上传后台

public void addUpLoadFile(HTTPContext context) throws IOException {
        ServletFileUpload upload = new ServletFileUpload(new DiskFileItemFactory());
        upload.setHeaderEncoding("utf-8");
        List fileList = null;
        try {
            fileList = upload.parseRequest(context.request);
        } catch (FileUploadException ex) {
            ex.printStackTrace();
        }
        Iterator it = fileList.iterator();
        while (it.hasNext()) {
            FileItem item = (FileItem) it.next();
            if (!item.isFormField()) {
                String name = item.getName();
                if (item.getName() == null || item.getName().trim().equals("")) {
                    continue;
                }
                byte[] docBytes = IOUtils.toByteArray(item.getInputStream());
                String fileType=item.getName().substring(item.getName().lastIndexOf(".")+1);
                
                byte[] pdfBytes = null;
                SEntity sEntity = new SEntity("SYS_UPLOAD_FILE");
                sEntity.setValue("CONTENT", docBytes);
                sEntity.setValue("FILENAME", name);
                sEntity.setValue("FILETYPE",fileType);
                baseDao.save(sEntity);
                            
                context.reply("上传成功!", 200);
            }
        }