String Actuator

配置文件

management:
  server:
    port: 8889
  endpoints:
    web:
      exposure:
       #默认值访问health,info端点  用*可以包含全部端点
        include: "shutdown,health,info"
  endpoint:
    shutdown:
      enabled: true
    health:
      show-details: always

关闭 Tomcat

@Slf4j
public class CustomShutdown  implements TomcatConnectorCustomizer,
        ApplicationListener<ContextClosedEvent> {
    private static final int TIME_OUT = 30;
    private volatile Connector connector;
    @Override
    public void customize(Connector connector) {
        this.connector = connector;
    }
    @Override
    public void onApplicationEvent(ContextClosedEvent event) {
        String displayName = "Web";
        if (event.getSource() instanceof AnnotationConfigApplicationContext ){
            displayName =  ((AnnotationConfigApplicationContext) event.getSource()).getDisplayName();
        }/* Suspend all external requests*/
        this.connector.pause();
        /* Get ThreadPool For current connector */
        Executor executor = this.connector.getProtocolHandler().getExecutor();
        if (executor instanceof ThreadPoolExecutor) {
            log.warn("当前{}应用准备关闭",displayName);
            try {
                ThreadPoolExecutor threadPoolExecutor = (ThreadPoolExecutor) executor;
                /* Initializes a shutdown task after the current one has been processed task*/
                threadPoolExecutor.shutdown();
                if (!threadPoolExecutor.awaitTermination(TIME_OUT, TimeUnit.SECONDS)) {
                    log.warn("当前{}应用等待超过最大时长{}秒，将强制关闭", displayName,TIME_OUT);
                    /* Try shutDown Now*/
                    threadPoolExecutor.shutdownNow();
                    if (!threadPoolExecutor.awaitTermination(TIME_OUT, TimeUnit.SECONDS)) {
                        log.error("强制关闭失败", TIME_OUT);
                    }
                }
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
    }
}

添加 Connector 回调

@Configuration
public class ShutdownConfig {
    @Bean
    public CustomShutdown customShutdown() {
        return new CustomShutdown();
    }
    @Bean
    public ConfigurableServletWebServerFactory webServerFactory(final CustomShutdown customShutdown) {
        TomcatServletWebServerFactory tomcatServletWebServerFactory = new TomcatServletWebServerFactory();
        tomcatServletWebServerFactory.addConnectorCustomizers(customShutdown);
        return tomcatServletWebServerFactory;
    }
}