依赖注入 servlet 侦听器

发布于 2024-10-28 03:49:03 字数 452 浏览 6 评论 0原文

在我的 Stripes 应用程序中，我定义了以下类：

MyServletListener implements ServletContextListener, HttpSessionListener, HttpSessionAttributeListener {

  private SomeService someService;

  private AnotherService anotherService;

  // remaining implementation omitted
}

该应用程序的服务层使用 Spring 在 XML 文件中定义一些服务 bean 并将其连接在一起。我想将实现 SomeService 和 AnotherService 的 Bean 注入到 MyServletListener 中，这可能吗？

原文

In my Stripes app I define the following class:

MyServletListener implements ServletContextListener, HttpSessionListener, HttpSessionAttributeListener {

  private SomeService someService;

  private AnotherService anotherService;

  // remaining implementation omitted
}

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?

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疯了 2024-11-04 03:49:03

像这样的事情应该有效：

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);
    }

    ...
}

您的侦听器应该在 web.xml 中的 Spring 的 ContextLoaderListener 之后声明。

Something like this should work:

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);
    }

    ...
}

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

回复收藏 0 原文

向地狱狂奔 2024-11-04 03:49:03

使用 SpringBeanAutowiringSupport 类更短更简单。
您所要做的就是这样：

SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);

因此使用 axtavt 中的示例：

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

    public void contextInitialized(ServletContextEvent sce) {
        SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
    }

    ...
}

Little bit shorter and simpler is to use SpringBeanAutowiringSupport class.
Than all you have to do is this:

SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);

So using example from axtavt:

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

    public void contextInitialized(ServletContextEvent sce) {
        SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
    }

    ...
}

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