使用Guice将依赖项注入ServletContextListener [英] Injecting dependencies to ServletContextListener with Guice

问题描述

由于ServletContextListener是由服务器而不是Guice创建的，所以我找不到使它协同工作的方法。

Since ServletContextListener is created by the server, not by Guice I can't find a way to make it work together. How do I get guice injector at ServletContextListener?

也许有更好的方法关闭诸如logger或持久性之类的服务，然后在contextDestroyed方法中进行设置并在contextInitialized中对其进行初始化？ p>

Maybe there is better way to shutdown services like logger or persistance then doing it at contextDestroyed method and initialize them at contextInitialized?

推荐答案

扩展名 GuiceServlet 将注入器置于servlet上下文中，因此您可以通过执行以下操作来获得它：

The extension GuiceServlet puts the injector in the servlet context, so you can get it by doing something like this:

public class MyServletContextListener implements ServletContextListener {

    @Override
    public void contextDestroyed(ServletContextEvent sce) {
        Injector injector = (Injector) sce.getServletContext()
                                          .getAttribute(Injector.class.getName());      
    }
}

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