keytool -genkey -alias tomcat -keyalg RSA

 server:
  tomcat:
  max-threads: 100
  min-spare-threads: 20
  connection-timeout: 5000
  ssl:
  key-store: classpath:.keystore
  key-store-type: JKS
  key-password: qq123456
  key-alias: tomcat
  port: 8443

 @SpringBootApplication
 public class AppApplication {
  public static void main(String args[]) {
   SpringApplication.run(AppApplication.class, args);
  }

  @Bean
  public EmbeddedServletContainerFactory tomcatEmbeddedServletContainerFactory() throws IOException {
   TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();
   tomcat.addAdditionalTomcatConnectors(httpConnector());
   return tomcat;
  }

  public Connector httpConnector() throws IOException {
   Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
   Http11NioProtocol http11NioProtocol = (Http11NioProtocol) connector.getProtocolHandler();
   connector.setPort(8080);
   //设置最大线程数
   http11NioProtocol.setMaxThreads(100);
   //设置初始线程数 最小空闲线程数
   http11NioProtocol.setMinSpareThreads(20);
   //设置超时
   http11NioProtocol.setConnectionTimeout(5000);
   return connector;
  }

 }

2016-11-21 10:53:15.247 INFO 42382 --- [   main] com.start.AppApplication     : Starting AppApplication on elemebjdeMacBook-Pro.local with PID 42382 (/Users/wangkang/code/SpringBoot-Learn/springboot-9/target/classes started by wangkang in /Users/wangkang/code/SpringBoot-Learn)
2016-11-21 10:53:15.251 INFO 42382 --- [   main] com.start.AppApplication     : No active profile set, falling back to default profiles: default
2016-11-21 10:53:15.426 INFO 42382 --- [   main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@489115ef: startup date [Mon Nov 21 10:53:15 CST 2016]; root of context hierarchy
2016-11-21 10:53:19.164 INFO 42382 --- [   main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8443 (https) 8080 (http)
2016-11-21 10:53:19.193 INFO 42382 --- [   main] o.apache.catalina.core.StandardService : Starting service Tomcat
2016-11-21 10:53:19.194 INFO 42382 --- [   main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.5

java -Xms4g -Xmx4g -Xmn768m -server -jar springboot-9-1.4.1.RELEASE.jar

  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-jetty</artifactId>
  </dependency>

@Profile("jetty")
  @Bean
  public JettyEmbeddedServletContainerFactory jettyEmbeddedServletContainerFactory(
    JettyServerCustomizer jettyServerCustomizer) {
   JettyEmbeddedServletContainerFactory factory = new JettyEmbeddedServletContainerFactory();
   factory.addServerCustomizers(jettyServerCustomizer);
   return factory;
  }


  @Bean
  public JettyServerCustomizer jettyServerCustomizer() {
   return server -> {
    // Tweak the connection config used by Jetty to handle incoming HTTP
    // connections
    final QueuedThreadPool threadPool = server.getBean(QueuedThreadPool.class);
    threadPool.setMaxThreads(100);
    threadPool.setMinThreads(20);
   };
  }

server:
 connection-timeout: 5000
 ssl:
 key-store: classpath:.keystore
 key-store-type: JKS
 key-password: qq123456
 key-alias: tomcat
 port: 8444