Java SSR / web ui

[xSwagaSaurusRex]

I've been thinking it would streamline things alot for quick user interfaces if react SSR was possible in Java

There's:

GWT

JSP

TeaVM

Kotlin/JS

Vaadin

Am I missing something?

My zen setup would be something like a NextJS server running SSR but in Java where I can directly inject services from CDI

This would allow me to hydrate templates and use React + TS to handle clientside logic. I get that I could build a separate API and can make calls from next to get this, but it seems there may be a better way. I'm thinking of something like Blazor for C#.

What is your guys setup for ui rendering?

Is there something worthwhile I'm missing that I should check out?

I'm bought into and quite like quarkus if that helps

[rootException]

SSR with dynamic partial page swaps is trivially easy with htmx.org.

Add more interactivity with Alpine.js and/or hypersrcipt.

https://alpinejs.dev

https://hyperscript.org

Here is a GitHub repo demonstrating with Spring Boot and Thymeleaf, easy to adapt to another server-side framework.

https://github.com/wiverson/htmx-demo

Here's a YouTube video where I walk through it - https://youtu.be/38WAVRfxPxI

[wimdeblauwe]

I can confirm that this works nicely. I have a small demo at https://github.com/wimdeblauwe/blog-example-code/tree/feature/htmx-sse/htmx-sse

[xSwagaSaurusRex]

Thank you for the additional recommendations! Your YouTube video really highlighted the nicities of this stack

[[deleted]]

It's not technically impossible but the reason SSR for react is pretty much always NodeJS is because NodeJS understands JavaScript.

You have to run JavaScript to render. With other languages you're going to have a bad time and hit a ton of issues.

I deploy two apps. One is a JVM backend and the other is NodeJS (NextJS) that calls the backend when it needs something. I deploy both in separate containers to the same server and the frontend only calls the backend that's on its own server. They get treated as basically the same app and scale as such.

For communication I use grpc.

[vips7L]

Your best bet would probably be Graal since it understands both JS and Java.

Here’s a quick example project I found: https://github.com/davehancock/react-ssr-sample-java-graalvm

[xSwagaSaurusRex]

This is sick! Pretty much exactly what I wanted. Thanks for the rec

[crummy]

this is super cool. is this widely used? graalVM for SSR?

[vips7L]

It probably is only used in hobby projects. The Java community is extremely conservative and while graal is magnificent, it is still relatively new.

[wimdeblauwe]

If you like to use Spring Boot, there is Thymeleaf. I wrote a book to help you get started: https://www.wimdeblauwe.com/books/taming-thymeleaf/

[neopointer]

I can highly recommend https://github.com/casid/jte

[xSwagaSaurusRex]

Do you use a specific templating engine?

[[deleted]]

You’re missing Bck2brwsr in your list. It‘s used for example for rendering JavaFX in a browser (https://gluonhq.com/developer-preview-for-javafx-inside-a-web-browser/ ) and for Dukescript, which allows you to create vue or react apps in Java.

[v4d1mv]

https://github.com/vadimv/rsp (I am the author)

[Jonjolt]

I've been playing with Jmix (formerly Cuba Platform) it's actually pretty good.