How to connect Spring with MySQL database?

I have a simple project, based on this guide. I created a simple REST interface and I want it to use my database. I added Hibernate to the dependencies and created the DAO class. I'm using Spring Tool-Suite for IDE. As far as I understand I should add some beans to tell the classes what to use but I don't understand how. Here are my classes.

Application.java

package com.learnspring.projectfirst;

@SpringBootApplication
public class Application {

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

Marker.java

package com.learnspring.projectfirst;

@Entity
public class Marker {

    @Id
    @Column
    @GeneratedValue(strategy=GenerationType.AUTO)
    private long id;
    @Column
    private double longitude;
    @Column
    private double latitude;

    @Column
    private String address;

    public Marker() {
        // Empty constructor
    }

    public Marker(long id, double longitude, double latitude, String address) {
        this.id = id;
        this.longitude = longitude;
        this.latitude = latitude;
        this.address = address;
    }

    //Getters and Setters
}

MarkerController.java

package com.learnspring.projectfirst.controller;

@Controller
public class MarkerController {
    private Logger logger = Logger.getLogger(MarkerController.class.getName());
    @Autowired
    private MarkerServiceImplementation markerService;

    @RequestMapping(value="/markers", method=RequestMethod.GET)
    public @ResponseBody List<Marker> getMarkers(@RequestParam(value="city", defaultValue="") String city) {
        return this.markerService.getAllMarkers();
    }

    @RequestMapping(value="/markers/new", method=RequestMethod.POST)
    public @ResponseBody Marker addMarker(@RequestBody Marker marker) {
        this.markerService.addMarker(marker);
        return marker;
    }

}

MarkerDaoImplementation.java

package com.learnspring.projectfirst.dao;

@Repository
public class MarkerDaoImplementation implements MarkerDaoInterface {

    @Autowired
    private SessionFactory sessionFactory;

    @Override
    public void addMarker(Marker marker) {
        this.sessionFactory.getCurrentSession().save(marker);
    }

    @Override
    public void deleteMarker(int markerId) {
        this.sessionFactory.getCurrentSession().delete(this.getMarker(markerId));
    }

    @Override
    public Marker getMarker(int markerId) {
        return (Marker) this.sessionFactory.getCurrentSession().get(Marker.class, markerId);
    }

    @Override
    public List<Marker> getAllMarkers() {
        return this.sessionFactory.getCurrentSession().createQuery("from Marker").list();
    }

}

MarkerServiceImplementation.java

package com.learnspring.projectfirst.service;

@Service
public class MarkerServiceImplementation implements MarkerServiceInterface {
    @Autowired
    private MarkerDaoImplementation markerDao;

    @Transactional
    public void addMarker(Marker marker) {
        this.markerDao.addMarker(marker);
    }

    @Transactional
    public void deleteMarker(int markerId) {
        this.markerDao.deleteMarker(markerId);
    }

    @Transactional
    public Marker getMarker(int markerId) {
        return this.markerDao.getMarker(markerId);
    }

    @Transactional
    public List<Marker> getAllMarkers() {
        return this.markerDao.getAllMarkers();
    }
}

And here is the file structure:

I understand that I should tell my program the database name and the columns using beans but I don't understand how. How can I link the java code to the beans? Sorry I pasted so much code, I just wanted to make sure you have everything needed. Thank you in advance!