没有注释的自动装配@Autowired

Question

我正在查看我在工作区中的一些旧例子.由于没有@Autowired,我无法看到自动装配是如何完成的.Spring boot + facebook默认配置.

@Controller
@RequestMapping("/")
public class HelloController {

    private Facebook facebook;
    private ConnectionRepository connectionRepository;

    public HelloController(Facebook facebook, ConnectionRepository connectionRepository) {
        this.facebook = facebook;
        this.connectionRepository = connectionRepository;
    }

    @GetMapping
    public String helloFacebook(Model model) {
        System.out.println("we are here!!!");
        if (connectionRepository.findPrimaryConnection(Facebook.class) == null) {
            return "redirect:/connect/facebook";
        }

        PagedList<Post> feed = facebook.feedOperations().getFeed();
        model.addAttribute("feed", feed);
        return "hello";
    }
}

它完美无缺,但这些bean如何在没有@Autowired的情况下自动装配？它们是作为字段还是在构造函数中自动装配？

Answer 1

使用spring boot 1.4+构造函数会自动自动装配

https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-spring-beans-and-dependency-injection.html