file 转 MultipartFile的方法

	/**
	 * file 转 MultipartFile
	 *
	 * @param file
	 * @return
	 */
	public static MultipartFile fileToMultipartFile(File file) {
		MultipartFile result = null;
		if (null != file) {
			try (FileInputStream input = new FileInputStream(file)) {
				result = new MockMultipartFile(file.getName().concat("temp"), file.getName(), "text/plain", input);
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * List<File> => MultipartFile[]
	 * 
	 * @param fileList
	 * @return
	 */
	public static MultipartFile[] fileListToMultipartFiles(List<File> fileList) {
		MultipartFile[] multipartFiles = new MultipartFile[fileList.size()];
		for (int i = 0; i < fileList.size(); i++) {
			File file4 = fileList.get(i);
			MultipartFile multipartFile = FileUtil.fileToMultipartFile(file4);
			multipartFiles[i] = multipartFile;
		}
		return multipartFiles;
	}