如何使用Spring将依赖注入HttpSessionListener?

由于Servlet 3.0 ServletContext有一个“addListener”方法,因此您可以通过如下代码添加监听器,而不是在web.xml文件中添加监听器:

@Component
public class MyHttpSessionListener implements javax.servlet.http.HttpSessionListener, ApplicationContextAware {

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (applicationContext instanceof WebApplicationContext) {
            ((WebApplicationContext) applicationContext).getServletContext().addListener(this);
        } else {
            //Either throw an exception or fail gracefully, up to you
            throw new RuntimeException("Must be inside a web application context");
        }
    }           
}

这意味着您可以正常地注入到“MyHttpSessionListener”中,这样,只要在应用程序上下文中存在bean,就可以使用容器注册侦听器

你可以申报 HttpSessionListener 作为Spring上下文中的bean,并在中注册一个委托代理作为实际的侦听器 web.xml ,类似于:

public class DelegationListener implements HttpSessionListener {
    public void sessionCreated(HttpSessionEvent se) {
        ApplicationContext context = 
            WebApplicationContextUtils.getWebApplicationContext(
                se.getSession().getServletContext()
            );

        HttpSessionListener target = 
            context.getBean("myListener", HttpSessionListener.class);
        target.sessionCreated(se);
    }

    ...
}

使用Spring4.0,但也可以使用3,我实现了下面详细介绍的示例,如下所示 ApplicationListener<InteractiveAuthenticationSuccessEvent> 然后注射 HttpSession https://stackoverflow.com/a/19795352/2213375