Spring 事件会话 bean 初始化

Question

在我的项目中，我需要 SessionBean 来存储与当前会话关联的对象。在会话已创建且用户已通过身份验证时，我想将对象设置为我的 bean。

Bean 定义：

<bean scope="session" class="org.example.SessionBean">
    <aop:scoped-proxy/>
</bean>

身份验证侦听器：

public class SpringAuthenticationListener implements ApplicationListener<ApplicationEvent> {

private LogService logService;

private UserService userService;

@Autowired
private SessionBean sessionBean;

public SpringAuthenticationListener(LogService logService, UserService userService) {
    this.logService = logService;
    this.userService = userService;
}

@Override
public void onApplicationEvent(ApplicationEvent e) {
    LogEvent logEvent = new LogEvent();

    if (e instanceof AuthenticationSuccessEvent) {
        AuthenticationSuccessEvent event = (AuthenticationSuccessEvent) e;
        UserDetails userDetails = (UserDetails) event.getAuthentication().getPrincipal();

        User loggedUser = userService.getUser( userDetails.getUsername() );
        sessionBean.setLoggedUser(loggedUser);
    } 
}

}

但是，问题是我无法获取当前 SessionBean 实例的实例。那是我的错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.org.example.SessionBean#0': Scope 'session' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

我该怎么做？什么事件或侦听器会让我用当前用户初始化 SessionBean。

Answer 1

Spring 使用 Filter 过滤器的安全操作在任何 Servlet 之前执行，因此也在 DispatcherServlet 之前执行。为了能够使用 request 或 session 作用域 bean，需要 RequestContext。这通常是由DispatcherServlet编写的。当想要在 DispatcherServlet 之外使用作用域 bean 时，您需要进行一些额外的设置。正如例外所述：

use RequestContextListener or RequestContextFilter to expose the current request.

要修复，请将 RequestContextListener or RequestContextFilter 添加到您的 web.xml。使用后者时，确保它在 springSecurityFilterChain 之前执行，否则它不会生效。侦听器始终在任何过滤器之前执行。

Spring 事件会话 bean 初始化

Spring session bean initialization on event

spring

authentication

spring-security

session-bean