允許在Spring Boot應用程序中使用@Autowired在哪些類中？

Question

以下代碼片段適用於Spring Boot 1.5.7應用程序。

@Controller 
public class MainController { 

    @Autowired 
    private EventtypeRepository eventtypeRepository; 

    private BetfairFacade client = new BetfairFacade(); 

    @GetMapping(path="/update") 
    public @ResponseBody int updateBetfair() { 
     return client.updateBetfair(eventtypeRepository); 
    } 

} 



public class BetfairFacade { 

public BetfairFacade() { 
} 

public int updateBetfair(EventtypeRepository eventtypeRepository) { 
    int out = 0; 

    Eventtype bfT = new Eventtype(); 
    bfT.setEventtype("foo"); 
    bfT.setName("bar"); 
    eventtypeRepository.save(bfT); 

    return out; 
    } 

} 

下面的代碼片段不起作用，因爲當我嘗試在BetfairFacade實例eventtypeRepository領域仍然null。

@Controller 
public class MainController { 

    private BetfairFacade client = new BetfairFacade(); 

    @GetMapping(path="/update") 
    public @ResponseBody int updateBetfair() { 
     return client.updateBetfair(); 
    } 

} 



@Component 
public class BetfairFacade { 

    @Autowired 
    public EventtypeRepository eventtypeRepository; 


    public BetfairFacade() { 
    } 

    public int updateBetfair() { 
    int out = 0; 

    Eventtype bfT = new Eventtype(); 
    bfT.setEventtype("foo"); 
    bfT.setName("bar"); 
    eventtypeRepository.save(bfT); 

    return out; 
    } 

} 

爲什麼不能正常工作？如果可以的話，是否有可能實現這個目標？

Answer 1

您必須爲@AutowireBetfairFacade才能使存儲庫注入工作。如果像你一樣手動實例化，spring將不會將其視爲託管bean。

@Controller 
public class MainController { 

    @Autowire 
    private BetfairFacade client;