# 70.15 启用Undertow的多监听器 将`UndertowBuilderCustomizer`添加到`UndertowEmbeddedServletContainerFactory`，然后使用`Builder`添加一个listener： ```java @Bean public UndertowEmbeddedServletContainerFactory embeddedServletContainerFactory() { UndertowEmbeddedServletContainerFactory factory = new UndertowEmbeddedServletContainerFactory(); factory.addBuilderCustomizers(new UndertowBuilderCustomizer() { @Override public void customize(Builder builder) { builder.addHttpListener(8080, "0.0.0.0"); } }); return factory; } ```