java File 转 MultipartFile

直接上代码

# localAddress 为文件路径 例如 “/test/myNote/test.pdf

File pdfFile = new File(localAddress);
            FileInputStream inputStream = new FileInputStream(pdfFile);
            MultipartFile multipartFile = new MockMultipartFile("file", pdfFile.getName(), "text/plain", IOUtils.toByteArray(inputStream));

参考：https://blog.csdn.net/m0_37589586/article/details/81513151