@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