<form name="ы" action="ы" method="post" enctype="multipart/form-data" ACCEPT-CHARSET="UTF-8">
<INPUT name="image" type="file">

response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
request.setCharacterEncoding("UTF-8");

String uploadDirctory = webTempPath; 
FileRenamePolicy frp =  new  DefaultFileRenamePolicy();
MultipartRequest multi =  new  MultipartRequest(request, uploadDirctory,  1024 * 1024 ,frp);
и т.д.

 byte [] b = multi.getParameter("name").getBytes();
Name =  new  String(b, "UTF-8");