@SpringBootApplication
@ComponentScan("com.x.y")
public class MainApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(MainApplication.class);
    }

    public static void main(String[] args) {
        new MainApplication().configure(new SpringApplicationBuilder(MainApplication.class)).run(args);
    }
}

## JDBC part
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/databasename
spring.datasource.username=user
spring.datasource.password=password
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=create
spring.jpa.database-platform=org.hibernate.dialect.MySQLDialect