我最终得到了：
import java.util.concurrent.Executor;import java.util.concurrent.ThreadPoolExecutor;import java.util.concurrent.TimeUnit;import org.apache.catalina.connector.Connector;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;import org.springframework.context.ApplicationListener;import org.springframework.context.event.ContextClosedEvent;public class GracefulShutdown implements TomcatConnectorCustomizer, ApplicationListener<ContextClosedEvent> { private static final Logger log = LoggerFactory.getLogger(GracefulShutdown.class); private volatile Connector connector; @Override public void customize(Connector connector) { this.connector = connector; } @Override public void onApplicationEvent(ContextClosedEvent contextClosedEvent) { log.info("Protocol handler is shutting down"); this.connector.pause(); Executor executor = this.connector.getProtocolHandler().getExecutor(); if (executor instanceof ThreadPoolExecutor) { try { ThreadPoolExecutor threadPoolExecutor = (ThreadPoolExecutor) executor; threadPoolExecutor.shutdown(); if (!threadPoolExecutor.awaitTermination(30, TimeUnit.SECONDS)) log.warn("Tomcat thread pool did not shut down gracefully within 30 seconds. Proceeding with forceful shutdown"); else log.info("Protocol handler shut down"); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } }}一些其他的bean：
import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;... @Bean public GracefulShutdown gracefulShutdown() { return new GracefulShutdown(); } @Bean public EmbeddedServletContainerFactory servletContainer(final GracefulShutdown gracefulShutdown) { TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory(); factory.addConnectorCustomizers(gracefulShutdown); return factory; }...
