Vaadin Flow 18/19 without Spring Boot?

Question

The https://start.vaadin.com page creates a new Vaadin Flow project for versions 18 or 19 (pre-release). But the resulting project requires Spring Boot.

I do not want Spring. I do not want Spring Boot. Both solve problems I do not have. Both add complications I do not want.

Is there a way to work with Vaadin 18 or 19 without Spring, with just plain Servlet technology?

Is there any Maven archetype available for Vaadin 18 or 19 but free of Spring & Spring Boot? Formerly, we had the Maven archetype vaadin-archetype-application. But that archetype works only for up to Vaadin 16. Fails for Vaadin 17 & 18.

As a workaround, is there some way to take Spring Boot based project generated on https://start.vaadin.com and then rip out all the Spring related parts? Or is that not viable?

Basically, this Question the same as this Question, Create a new Vaadin Flow 16/17 project using plain Java Servlets without Spring/CDI but for Vaadin 18/19 rather than 16/17.

Answer 1

tl;dr

Use Hello World Starters page shown below.

Hello World Starters

For starting a new project in the currently-supported versions of Vaadin Flow, use either:

• non-Spring alternatives at the Hello World Starters page.
• Spring-based interactive project-builder web app.

The non-Spring alternative starter projects come in "Plain Servlet" flavors for Maven as well as for Gradle as your build-management tool. And another starter is configured for Jakarta Contexts and Dependency Injection (CDI). Yet another supports Quarkus.

Answer 2

The easiest way is to use Skeleton Starter for Vaadin as a base, using the v18 branch in this case.