As a resulte:
1. In log:
- stream to servlet without problem
- Buffer is not null
- Temporary is not null
- request is not null
- fileOutputStream is not null
2. In "newimage"-directory new file is creating. For example: "Picture147".
But this file IS EMPTY....
So, html/js send a file on server, servlet receives it with request ("stream to servlet without problem"), ImageService serialize it and creates a new file.
But serialized data is not saved in this new file!
Additionally: size of image-file, wich i try to save from web-page to server has a size: 250 × 188