how can migrate a web application realized by jsp/struts to vaadin framewor

The project that I will realize is a part of web application development, migrate the admin module interface realized by JSP/Struts to VAADIN framework …

how can do it ?? what is the steps to realize the migration ?
and it is possible to migrate it automatically ??

Migrating from Struts

Also: You can embed a Vaadin App in jsp but AFAIK you can’t do it the other way around.