@SpringBootApplication
@EnableSwagger2

config/
    @Configuration SwaggerConfiguration
    @Autowired 
        TypeResolver
    @Bean
        Docket

controller/
    @RequestMapping("/post")
    @RestController
    @CrossOrigin("http://localhost:80001")
    @Autowired PostRepository

    @RequestMapping(method = RequestMethod.POST, consumes = MediaType.Application_JSON_VALUE, produces = MediaType.Application_JSON_VALUE)
    @ResponseStatsu(HttpStatus.CREATED)
    public Post save() {postRepository.saveAndFlush(post)}

    @RequestMapping(method = RequestMethod.GET)
    public List<Post> getAll() { postRepository.findAll(); }

model/
    @Entity (javax.persistence)
    @Data (lombok)
    @Builder (Lombok)
    @NoArgsConstructor @AllArgsConstructor (lombok)

    @Id @GeneratedValue(strategy = GenerationType.AUTO)

repository/
    @Repository
    public interface PostRepository extends JpaRespository<Post, Integer>