Spring Boot正常关机

  • Z时代
  • 2024-01-10
  • 分类：问答

我正在开发由嵌入式Tomcat支持的Spring Boot" title="Spring Boot">Spring Boot应用程序，并且需要按照以下步骤开发正常关机：

  1. 停止处理新的HTTP请求（停止Web容器）

  2. 处理所有已经接受的请求

  3. 关闭Spring ApplicationContext

*按顺序（依次）执行上述步骤

我该如何实现？

PS Spring Boot 1.5.20.RELEASE，Java 8

回答：

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;
  }
...

以上是 Spring Boot正常关机 的全部内容， 来源链接： utcz.com/qa/399705.html

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