無法設置@Async方法

Question

我正在嘗試在我的Spring項目中使用@Async註釋。爲此，我將此行添加到我的servlet-config.xml中： <task:annotation-driven />。因此，我不能再運行該項目，我得到這個錯誤：

Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.dynamease.web.user.social.LinkedInController]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given 

這裏是我LinkedInController類：

@Controller 
@Scope(proxyMode = ScopedProxyMode.INTERFACES) 
public class LinkedInController { 

    private static final Logger logger = LoggerFactory.getLogger(LinkedInController.class); 

    private final LinkedIn linkedIn; 

    @Inject 
    public LinkedInController(LinkedIn linkedIn) { 
     logger.info("Initialisation du controleur linkedIn."); 
     this.linkedIn = linkedIn; 
    } 

    @RequestMapping(value = "linkedin") 
    public ModelAndView categorize() { 
     categorizeAndStore(linkedIn); 
     return mav; 
    } 

    @Async 
    public Future<Boolean> categorizeAndStore(LinkedIn source) { 
     // java stuff 
     return new AsyncResult<Boolean>(true); 
    } 
} 

我找到解決的辦法是增加<aop:scoped-proxy>或@Scope(proxyMode = ScopedProxyMode.INTERFACES)但作爲你可以看到，它的存在並不重要。

Answer 1

如果方面應用於使用CGLIB代理的類，則需要不帶參數的構造函數。嘗試是這樣的：

@Controller 
public class LinkedInController { 

    private static final Logger logger = LoggerFactory.getLogger(LinkedInController.class); 

    @Inject 
    private final LinkedIn linkedIn; 

    public LinkedInController() { 
     logger.info("Initialisation du controleur linkedIn."); 
    } 

    @RequestMapping(value = "linkedin") 
    public ModelAndView categorize() { 
     categorizeAndStore(linkedIn); 
     return mav; 
    } 

    @Async 
    public Future<Boolean> categorizeAndStore(LinkedIn source) { 
     // java stuff 
     return new AsyncResult<Boolean>(true); 
    } 
}