Spring boot-beans配置无需@component注释

Question

作为我大学项目的一部分，我被要求实现一个简单的spring-boot应用程序（仅限于后端），它可以通过HTTP请求与Postman通信。

null

我得到：

ServletException：循环视图路径[post]:将再次分派回当前处理程序URL[/post]。检查您的视图解析器设置！

我试图探索这个异常，并通过添加这个maven依赖项设法“解决”了它：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
    <version>2.5.2</version>
</dependency>

"org.thymeleaf.exceptions.TemplateInputException: Error resolving template [post], template might not exist or might not be accessible by any of the configured Template Resolvers"

@Configuration
@EnableJpaRepositories(basePackages = {
        "com.example.microblog.post.domain.repository"
})
public class ApplicationBeans {

    @Bean
    public PostController postController(PostService postService){
        return new PostController(postService);
    }

    @Bean
    public PostService postService(){
        return new PostService();

    }

}

@AllArgsConstructor
@RequestMapping(path = "post")
public class PostController {

    @Autowired
    private PostService service;

    @CrossOrigin(origins = "http://localhost:4200")
    @PostMapping("")
    public PostEntity create(@RequestBody PostDto dto) {
        return service.create(dto);
    }

    @GetMapping("/all")
    @CrossOrigin(origins = "http://localhost:4200")
    public List<PostEntity> getAll() {
        return service.getAll();
    }

}

@Transactional
public class PostService {

    @Autowired
    private PostRepository PostRepository;


    public PostEntity create(PostDto dto){
        PostEntity newPost = new PostEntity(dto.getContent());
        return PostRepository.save(newPost);
    }

    public List<PostEntity> getAll(){
        return PostRepository.findAll();
    }

存储库类：

public interface PostRepository extends JpaRepository<PostEntity,Long> {}

Answer 1

对于第二种方法，在创建Bean时，尽量不要在为其创建Bean的类上使用@component/@controller...

@Configuration
public class AppConfig {
    @Bean
    public TransferService transferService() {
        return new TransferServiceImpl();
    }
}

您可以像第三种方法一样继续对它们进行自动处理，尽量不要保留同名的bean