Spring Boot 2.0中的EmbeddedServletContainerCustomizer

从Spring Boot 2开始， WebServerFactoryCustomizer 取代了
EmbeddedServletContainerCustomizer ：

@Beanpublic WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> webServerFactoryCustomizer() {    return (factory) -> factory.addErrorPages(new ErrorPage(HttpStatus.UNAUTHORIZED, "/401.html"));}

或者， 您可以添加一个视图控制器，例如

@Overridepublic void addViewControllers(ViewControllerRegistry registry) {    registry.addViewController("/unauthorized").setViewName("forward:/401.html");}

然后您的WebServerFactory应该指向/ unauthorized：

@Beanpublic WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> webServerFactoryCustomizer() {    return (factory) -> factory.addErrorPages(new ErrorPage(HttpStatus.UNAUTHORIZED, "/unauthorized"));}