<form method="post" action="signup" enctype="multipart/form-data">

   <input type="text" name="username" placeholder="Username">
   <input type="email" name="email" placeholder="Email">
   <input type="password" name="password" placeholder="Password" >
   <input type="file" name="image">
   <input type="submit" id="submit" style="width:20%; float:right;    padding:4px 10px;" value="Se connecter">

</form>

String username = "";
    String email = "";
    String password = "";
    String image = "";
    int invitation = 0;

    ArrayList<String> liste = new ArrayList<String>();

    try {
        List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(req);

        for(FileItem item:items){
            if(item.isFormField()){
                if(item.getFieldName().equals("username")){
                    username = item.getString();
                    System.out.println(username);
                }
                if(item.getFieldName().equals("email")){
                    email = item.getString();
                    System.out.println(email);
                }
                if(item.getFieldName().equals("password")){
                    password = item.getString();
                    System.out.println(password);
                }
            }
            else {
                image = item.getName();
                System.out.println(image);
                String imageName = FilenameUtils.getName(item.getName());
                System.out.println(imageName);
                File folder = new File("C:/Users/user/wORKPLce/ImitateBook/WebContent/Assets/images");

                File file = null;
                try {
                    file = File.createTempFile("img",imageName,folder);
                }catch(Exception e){
                    System.out.println("Error here here");
                }

                liste.add(item.getName());

                item.write(file);

            }
        }
    }
    catch(Exception e){
        System.out.println("Error signup getData");
    }