java - Tomcat 上的 Websockets : how to shutdown the server cleanly?

Question

我如何拦截服务器上运行的端点的关闭事件(比如 servlet 的销毁方法)以用于日志记录或其他目的？

Answer 1

Spring 4 Java 配置:

实现 SmartLifecycle(当使用基于 Java 的配置时，或将 Java 代码转换为 XML):

@Configuration
public class CycleBean implements SmartLifecycle {

    public CycleBean() {
    }

    @Override
    public boolean isRunning() {
        return true;
    }

    @Override
    public void start() {
    }

    @Override
    public void stop() {
        //when stopped call 
    }

    @Override
    public int getPhase() {
        return 0;
    }

    @Override
    public boolean isAutoStartup() {
        return true;
    }

    @Override
    public void stop(Runnable arg0) {
        //
    }
}

参见 http://docs.spring.io/spring/docs/3.1.x/spring-framework-reference/htmlsingle/spring-framework-reference.html第 4.6 段自定义 bean 的性质，例如:

<bean id="lifecycleProcessor" class="org.springframework.context.support.DefaultLifecycleProcessor">
  <!-- timeout value in milliseconds -->
  <property name="timeoutPerShutdownPhase" value="10000"/>
</bean>