CDI-观察集装箱事件 [英] CDI - Observing Container Events

问题描述

我正在尝试观察CDI Web应用程序的启动和关闭事件。我有一个侦听这些事件的ApplicationScoped bean：

I am trying to observe both the startup and shutdown events for a CDI web application. I have an ApplicationScoped bean that listens for those events:

@ApplicationScoped
public class PrettyfacesStartupObserver
{
    private static final Log LOGGER = LogFactory.getLog(PrettyfacesStartupObserver.class);

    public PrettyfacesStartupObserver()
    {
        LOGGER.debug("\n\n\n\n\n\n\n\n\n\nconstructor");
    }

    public void onStartup(@Observes
    AfterBeanDiscovery afterBeanDiscovery
                                             )
    {
        LOGGER.debug("\n\n\n\n\n\n\n\n\n\nafter bean discover");
    }

    public void onStartup(@Observes
    AfterDeploymentValidation afterDeploymentValidation
                                             )
    {
        LOGGER.debug("\n\n\n\n\n\n\n\n\n\n\nafter deployment validation");
    }

    public void onShutdown(@Observes
    BeforeShutdown beforeShutdown
                                                )
    {
        LOGGER.debug("\n\n\n\n\n\n\n\n\n\n\nbefore shutdown:" + beforeShutdown);
    }

我在日志中看不到任何东西。

I don't see anything in the logs.

我还缺少什么？

推荐答案

感谢Pete Muir，解决方案是实施扩展接口。一旦完成该操作，再创建一个特殊文件，它就可以完美运行。

Thanks to Pete Muir, the solution was to implement the Extension interface. Once I did that, along with creating a special file, it worked perfectly.

要记住的是，如果您想观察（或处理）容器事件，您必须实现扩展接口，因为它是一个特殊事件。

The thing to remember is, if you want to observe (or act on) container events, you must implement the extension interface as it is a special event.

https://docs.jboss.org/weld/reference/latest/zh-CN/html/extend.html#d0e4984

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