A simple code to convert a multi[part file to an inputStream and extract contents from a multipart file

MultipartFileToInputStream.java

public void extractMultipartFile(MultipartFile file){

   InputStream inputStream =file.getInputStream();
   String originalFileName = file.getOriginalFilename();
   String fileName = file.getName();
   byte[] bytes = file.getBytes();
   String contentType = file.getContentType();
  
}