Hydrogen

A web framework for Java. Get started in one line of code:

Jetty.start(request -> Response.ok().text("Hello, world!"));

Features

• No Magic. No static mutable state, runtime code generation, annotation processing, or any other control flow modifications.
• Lightweight. Use lightweight immutable POJOs instead of heavyweight, mutable server-specific objects. Test your code without starting a web server.
• Composable. Requests and responses are immutable, handlers are Request -> Response functional interfaces, and filters are Handler -> Handler functional interfaces. Maximal code reuse!

Examples

Routing

Router router = Router.builder()
	.get("/", request -> Response.ok().html("<h1>index</h1>"))
	.get("/user/:name", request -> {
		String user = request.getRouteParam("name");
		return Response.ok().html("<h1>" + user + "</h1>");
	}).build();
Jetty.start(3000, router);

Installation

Hydrogen has not yet reached version 0.1.0, in the meantime you can use Jitpack with Gradle. Just add Jitpack to repositories:

repositories {
	...
	maven { url 'https://jitpack.io' }
}

Then add the dependency.

dependencies {
	...
	compile 'com.github.snordgren:hydrogen:-SNAPSHOT'
}

Please post your feedback and suggestions in the issue tracker. Contributions welcome!