Mu Server quick start

Mu Server: Java's modern web server

Quick Start

Add one dependency...

<dependency>
    <groupId>io.muserver</groupId>
    <artifactId>mu-server</artifactId>
    <version>2.1.0</version>
</dependency>

...and say hello:

import io.muserver.*;
public class Hello {
    public static void main(String[] args) {
        MuServer server = MuServerBuilder.httpServer()
            .addHandler(Method.GET, "/", (request, response, pathParams) -> {
                response.write("Hello, world");
            })
            .start();
        System.out.println("Started server at " + server.uri());
    }
}

Upgrading to 2.x? See the upgrade notes.

Features

• Flexible routing and filtering with request handlers
• A clean model giving simple access to request and response objects
• HTTP/2 Support
• Convenient static resource handling, with GZIP, range requests, and custom response headers based on file type.
• Extremely simple HTTPS configuration including Let's Encrypt integration and optional Mutual TLS
• Server Sent Events
• Web Sockets
• JAX-RS Rest support with no extra dependencies, including:
  • Automatic documentation for rest services
  • Simple CORS support for JAX-RS
• File Upload support
• Optional async handling
• Path contexts
• A Reverse Proxy handler
• Statistics
• Various useful utilities

Each release is tested with Java 8, 11, 17 and 21.