依赖注入 servlet 侦听器 [英] dependency inject servlet listener

问题描述

在我的 Stripes 应用中，我定义了以下类:

In my Stripes app I define the following class:

MyServletListener implements ServletContextListener, HttpSessionListener, HttpSessionAttributeListener {

  private SomeService someService;

  private AnotherService anotherService;

  // remaining implementation omitted
} 

这个应用程序的服务层使用 Spring 在 XML 文件中定义和连接一些服务 bean.我想将实现 SomeService 和 AnotherService 的 bean 注入到 MyServletListener 中，这可能吗?

The service layer of this app uses Spring to define and wire together some service beans in an XML file. I would like to inject the beans that implement SomeService and AnotherService into MyServletListener, is this possible?

推荐答案

这样的事情应该可行:

public class MyServletListener implements ServletContextListener, HttpSessionAttributeListener, HttpSessionListener {
    @Autowired
    private SomeService someService;        
    @Autowired
    private AnotherService anotherService; 

    public void contextInitialized(ServletContextEvent sce) {
        WebApplicationContextUtils
            .getRequiredWebApplicationContext(sce.getServletContext())
            .getAutowireCapableBeanFactory()
            .autowireBean(this);
    }

    ...
}

你的监听器应该在 web.xml 中 Spring 的 ContextLoaderListener 之后声明.

Your listener should be declared after Spring's ContextLoaderListener in web.xml.

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