package hello;

import java.util.Arrays;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class Application {

    public static void main(String[] args) {
            ApplicationContext ctx = SpringApplication.run(Application.class, args);
            
            System.out.println("Let's inspect the beans provided by Spring Boot:");
                    
            String[] beanNames = ctx.getBeanDefinitionNames();
            Arrays.sort(beanNames);
            for (String beanName : beanNames) {
                 System.out.println(beanName);
            }
    }
                                           
}

package hello;

import java.util.Arrays;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class Application extends WebMvcConfigurerAdapter {

    public static void main(String[] args) {
            ApplicationContext ctx = SpringApplication.run(Application.class, args);
            
            System.out.println("Let's inspect the beans provided by Spring Boot:");
                    
            String[] beanNames = ctx.getBeanDefinitionNames();
            Arrays.sort(beanNames);
            for (String beanName : beanNames) {
                 System.out.println(beanName);
            }
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/**").addResourceLocations("file:./");
    }
}

Add static content