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在 Spring 中，很容易自动装配 bean 并使它们在应用程序上下文中的任何位置可用。bean 可以专门用于会话/请求/web 套接字等范围。

我有一个相当独特的场景。我从消息代理收到一条消息，这意味着“控制器”中未收到请求。因此，Spring 不会创建@RequestScopebean（Spring 中的所有这些逻辑都是基于使用@Controller/@RequestMapping注释 /DispatchServlet处理程序）。AutowireCapableBeanFactory有没有办法使用 Spring或其他方式在请求范围内创建 bean ？

我想做类似下面的事情，其中​​将SomeService.handle能够访问getName(). RequestScopeBean目前它抛出了这个异常。

例外：

BeanCreationException: Error creating bean with name ' 
scopedTarget.getRequestUtils': Scope 'request' is not active for the 
current thread; consider defining a scoped proxy for this bean

代码

@Service
public class MyMessagingReceiver implements SomeMessageReceiver {

    private final SomeService someService;

    @Autowired
    public MyMessagingReceiver(final SomeService someService) {
        this.someService = someService;
    }

    public void onMessage(MessageObject messageObject) {
        //possible here to use AutowireCapableBeanFactory in inject the RequestScopeBean bean?
        someService.handle(messageObject);
    }
}

@Service
public class SomeService {

    private final RequestScopeBean requestScopeBean;

    @Autowired
    public SomeService(RequestScopeBean requestScopeBean) {
        this.requestScopeBean = requestScopeBean;
    }

    public void handle(MessageObject messageObject) {
        System.out.println(this.requestScopeBean.getName());
    }

}

@Configuration
public class BeanDeclarations {
    @Bean
    @RequestScope
    public RequestScopeBean requestScopeBean() {
        return new RequestScopeBean();
    }
}

public RequestScopeBean {
    private String name;

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }
}

public class Interceptor extends HandlerInterceptorAdapter {
    private RequestScopeBean requestScopeBean;

    @Autowired
    public Interceptor(RequestScopeBean requestScopeBean) {
        this.requestScopeBean = requestScopeBean;
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String name = request.getHeader("name");
        this.requestScopeBean.setName(name);
    }


}
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