Java。 将文件保存到客户端不起作用

Question

I want to save File to a client side. How it can be done ? When i start server localy all is good Files are saved @ needed place, when run on server then files are saved on server side :( . Because System.getProperty("user.home") are returning :/root . User select File from system and wants to open it. Code example:

mylog.pl("Blob in use + stop counter:" + stop);
File file = new File(SU.userHome + "/" + fileName);
mylog.pl("File maked ! Path:" + file.getAbsolutePath());
in = blob.getBinaryStream();
out = new FileOutputStream(file);
byte[] buff = new byte[4096];
int len = 0;
while ((len = in.read(buff)) != -1) {
      out.write(buff, 0, len);
 }                              
try {
      mylog.pl("Desktop Open!");
      if (Desktop.isDesktopSupported())
       {
         Desktop.getDesktop().open(file);
       } 
      else 
      {
        mylog.pl("Desktop is not suported!");
        //For other IS
        DesktopApi.open(file);
      }
    } 
    catch (Exception e) {
         mylog.pl("err @ runtime" + e.getMessage());
    }

Thanks ! Correct answers guaranteed !

Answer 1

                            //From server to client
                            final FileResource res = new FileResource(file);
                            FileDownloader fd = new FileDownloader(res);
                            p.open(res, "MyWindow", false);
                            file.delete();