Access session scoped variable in spring interceptor

问题

How can i access session scoped variable in spring interceptor?

Session scoped class:

@Component
@Scope("session")
public class User {
}

Controller:

@Controller
@RequestMapping("/restricted")
@Scope("request")
public class RestrictedController {
    @Autowired
    private User user;
}

Dispatcher servlet:

<mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/restricted/*"/>
            <bean class="com.interceptors.RestrictedInterceptor" />
        </mvc:interceptor>
    </mvc:interceptors>

Interceptor class:

public class RestrictedInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request,
            HttpServletResponse response, Object handler) throws Exception {
    }
}

In prehandle i want to check if user is logged in (some other checks as well), how can i access session scoped user variable here? Autowiring user in Interceptor class throws exception.

回答1:

You should be able to access your session-scoped user using the following code:

request.getSession().getAttribute("scopedTarget.user");

See related post here and org.springframework.aop.scope.ScopedProxyUtils class.

来源：https://stackoverflow.com/questions/32283450/access-session-scoped-variable-in-spring-interceptor