java将视频文件转multipartfile

超、凢脫俗 2023-05-30 15:55 23阅读 0赞

添加依赖：

<dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.4</version>
    </dependency>

相关代码：

/**
         * 创建多媒体流文件
         *
         * @param filePath filePath
         * @return
         */
        public MultipartFile createMultipartFile(String filePath)
            throws ServiceException
        {
            File file = new File(filePath);
    
            FileItemFactory factory = new DiskFileItemFactory(16, null);
            FileItem item = factory.createItem("file", "text/plain", true, file.getName());
            int bytesRead = 0;
            byte[] buffer = new byte[8192];
            FileInputStream fis = null;
            OutputStream os = null;
            try
            {
                fis = new FileInputStream(file);
                os = item.getOutputStream();
                while ((bytesRead = fis.read(buffer, 0, 8192)) != -1)
                {
                    os.write(buffer, 0, bytesRead);
                }
            }
            catch (Exception e)
            {
                logger.error("read file catch exception. cause:", e);
                throw new ServiceException("read file fail.");
            }
            finally
            {
                try
                {
                    if (null != os)
                    {
                        os.close();
                    }
    
                    if (null != fis)
                    {
                        fis.close();
                    }
                }
                catch (Exception e)
                {
                    logger.error("close stream catch exception. cause: ", e);
                    throw new ServiceException("close stream fail.");
                }
    
            }
    
            MultipartFile mfile = null;
            if (item != null)
            {
                mfile = new CommonsMultipartFile(item);
            }
    
            return mfile;
        }