Good day!
We need a simple, convenient, free and multi-functional framework for creating a web application (hereinafter referred to as the application).
Originally written on jsp, everything worked well, but now I have to expand the functionality: you need to implement authorization, a treeview with dynamically loaded data, a ganthe diagram. (this is all in the first stage)
I didn’t want to write on gwt naked, reviewed several frameworks and stopped at vaadin. But vaadin has little functionality: there is no lazy loading tree normal, it is difficult to fasten the ganthe diagram (there are a couple, but they do not fit), and in general Vaadin Designer for IntelliJ IDEA has not yet been released.
Tell me some frameworks for implementing such a program in java, or show that I'm wrong about Vaadin.
