如何在AuthenticationSuccessHandler中检索会话范围的bean？ [英] How to retrieve a session-scoped bean inside AuthenticationSuccessHandler?

问题描述

我有一个自定义AuthenticationSuccessHandler。

I have a custom AuthenticationSuccessHandler.

我想要做的是在onAuthenticationSuccess方法中设置一些会话数据。

What I want to do is to set some session data within onAuthenticationSuccess method.

要存储会话数据我想使用会话范围的bean，它可以在任何控制器中正常工作。

To store session data I want to use a session-scoped bean, which works fine within any controller.

但是如果我尝试在onAuthenticationSuccess方法中检索它，我得到一个例外：

But if I try to retrieve it within onAuthenticationSuccess method, I get an exception:

创建名称为
'scopedTarget.sessionData'的bean时出错：范围
'session '对于
当前线程无效;

Error creating bean with name 'scopedTarget.sessionData': Scope 'session' is not active for the current thread;

我的代码是：

WebApplicationContext context = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getServletContext());
SessionData sessionData = context.getBean(SessionData.class);

任何想法？

推荐答案

您可以尝试声明一个暴露实现会话范围所需的状态的侦听器：

You can try to declare a listener that exposes state necessary to implement session scope:

<listener>
  <listener-class>
      org.springframework.web.context.request.RequestContextListener
  </listener-class>
</listener>

默认情况下，该状态由 DispatcherServlet 公开，所以在请求进入 DispatcherServlet 之前它不可用（例如在Spring Security过滤器中）。

By default that state is exposed by DispatcherServlet, so it's not available before request enters DispatcherServlet (e.g. in Spring Security filters).

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