Spring Boot 转换 web.xml 侦听器

Spring boot convert web.xml listener

提问by drenda

I'm trying to convert my project to Spring Boot project (executable jar file with Jetty embedded). All works with a standard example but I want migrate my old web.xml to Spring Boot.

我正在尝试将我的项目转换为 Spring Boot 项目（嵌入了 Jetty 的可执行 jar 文件）。所有都适用于标准示例，但我想将旧的 web.xml 迁移到 Spring Boot。

I migrated Servlet and Filters but I don't understand how migrate filters as this:

我迁移了 Servlet 和过滤器，但我不明白如何迁移过滤器：

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<listener>
    <listener-class>org.granite.config.GraniteConfigListener</listener-class> 
</listener> 
    <listener>
    <listener-class>org.granite.gravity.websocket.GravityWebSocketDeployer</listener-class>
</listener>

I created my @SpringBootApplication class and I wrote inside all the configuration:

我创建了 @SpringBootApplication 类，并在所有配置中写入：

@Bean
@Order(1)
public FilterRegistrationBean springSecurityFilterChain() {     
    FilterRegistrationBean filterRegBean = new FilterRegistrationBean();
    DelegatingFilterProxy delegatingFilterProxy = new DelegatingFilterProxy();
    filterRegBean.setFilter(delegatingFilterProxy);
    List<String> urlPatterns = new ArrayList<String>();
    urlPatterns.add("/*");
    filterRegBean.setUrlPatterns(urlPatterns);
    return filterRegBean;
}

Someone can explain me how Listeners should be converted?

有人可以解释我应该如何转换 Listeners 吗？

采纳答案by Koitoer

For RequestContext read this

对于 RequestContext 阅读这个

 @Bean
    @ConditionalOnMissingBean(RequestContextListener.class)
    public RequestContextListener requestContextListener() {
        return new RequestContextListener();
    }

For the other listener is register automatically when you use spring-boot as thislink implies.

对于另一个侦听器，当您使用 spring-boot 时会自动注册，正如此链接所暗示的那样。

For your own listeners.

给你自己的听众。

public class MyAdditionListeners extends SpringBootServletInitializer {

    protected final Log logger = LogFactory.getLog(getClass());

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        WebApplicationContext rootAppContext = createRootApplicationContext(servletContext);
        if (rootAppContext != null) {
            servletContext.addListener(new YourListenerHere());
        }
        else {
            this.logger.debug("No ContextLoaderListener registered, as "
                    + "createRootApplicationContext() did not "
                    + "return an application context");
        }
    }

Finally there is a linkin which you can find some information about listeners and SpringApplication class. Read section

最后有一个链接，您可以在其中找到有关侦听器和 SpringApplication 类的一些信息。阅读部分

回答by Andy Wilkinson

Spring Boot will automatically register any @Beansof the following types with the servlet container:

Spring Boot 将自动@Beans向 servlet 容器注册以下任何类型：

• ServletContextAttributeListener
• ServletRequestListener
• ServletRequestAttributeListener
• HttpSessionAttributeListener
• HttpSessionListener
• ServletContextListener

• ServletContextAttributeListener
• Servlet 请求监听器
• ServletRequestAttributeListener
• HttpSessionAttributeListener
• HttpSessionListener
• ServletContextListener

For example, to register GravityWebSocketDeployerwhich is a ServletContextListeneradd a @Beanmethod to your configuration class:

例如，要注册GravityWebSocketDeployer哪个是ServletContextListener将@Bean方法添加到您的配置类：

@Bean
public GravityWebSocketDeployer gravityWebSocketDeployer() {
    return new GravityWebSocketDeployer();
}

回答by Muzu

Also Spring Boot will automatically register any @Bean extend of HttpServlet;

Spring Boot 也会自动注册 HttpServlet 的任何 @Bean 扩展；

   @Bean
   public ServletRegistrationBean axisServletRegistrationBean() {
      ServletRegistrationBean registration = new ServletRegistrationBean(new AxisServlet(), "/services/*");
      registration.addUrlMappings("*.jws");
      return registration;
   }