GreetingController.java

package com.jean.hello;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import java.sql.*;
import java.util.concurrent.atomic.AtomicLong;

@Controller
public class GreetingController {

    private static final String template = "Hello, %s!";
    private final AtomicLong counter = new AtomicLong();

    @RequestMapping("/")
    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) throws SQLException {
        return new Greeting(counter.incrementAndGet(), "boom");
    }
}