Starting JVM REST service, what is the stack should I use?

Question

If starting from scratch, with only requirements of JVM and existing MySQL database of medium complexity, and with the goal of doing only REST, nothing else, what is a good example of components I should use?

Want to keep it as simple as possible.

Answer 1

A few simple options can be:

Spark Framework , Sinatra-inspired + uses nice Java 8 features. Quick start example:

import static spark.Spark.*;

public class HelloWorld {
    public static void main(String[] args) {
        get("/hello", (req, res) -> "Hello World");
    }
}

Spring Boot , a simple way to start in Spring ecosystem. Quick start:

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;

@Controller
@EnableAutoConfiguration
public class SampleController {

    @RequestMapping("/")
    @ResponseBody
    String home() {
        return "Hello World!";
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(SampleController.class, args);
    }
}

Spring has Spring MVC module for building RETSful APIs, here's an example: http://spring.io/guides/gs/rest-service/

You can also take a look at other JVM languages, for example Play Framework in Scala or Grails in Groovy.

UPDATE

I forgot to mention Dropwizard . It uses JAX-RS for RESTful APIs, which can look very verbose, but it's very mature and stable. Here's quick start guide: http://www.dropwizard.io/0.9.2/docs/getting-started.html