public String fileToBase64(MultipartFile file) throws Exception {
String return_base64="";
File tmpFile = new File("/" + UUID.randomUUID()+ file.getOriginalFilename().substring(file.getOriginalFilename(
public String fileToBase64(MultipartFile file) throws Exception {
String return_base64="";
File tmpFile = new File("/" + UUID.randomUUID()+ file.getOriginalFilename().substring(file.getOriginalFilename(