@Component
public class CustomizationBean implements EmbeddedServletContainerCustomizer{

  /**
   * 定制方法一：实现EmbeddedServletContainerCustomizer
   * @param container
   */
  @Override
  public void customize(ConfigurableEmbeddedServletContainer container) {
    //container.setPort(9000);
  }

  /**
   * 定制方法二：注入EmbeddedServletContainerFactory
   * @return
   */
  @Bean
  public EmbeddedServletContainerFactory servletContainer() {
    TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
    factory.setPort(9001);
    factory.setSessionTimeout(10, TimeUnit.MINUTES);
    //优先级高于配置在/static/error文件夹里面的404.html页面
    factory.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/error/403.html"));
    return factory;
  }
}

#=====================servlet container config==================
server.port=8080
server.ssl.enabled=false
server.address=127.0.0.1
server.session.persistent=true
#1800 seconds,30 minutes
server.session.timeout=1800
server.session.store-dir=/Users/hdwang/sessiontmp