An invalid domain [.localhost.com] was specified for this cookie

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尝试调用cookie.setDamain时，报了这个错。

使用这个文章的解决方法可以解决问题：

https://blog.csdn.net/doctor_who2004/article/details/81750713

增加一个bean

/**
     * 解决问题：
     * There was an unexpected error (type=Internal Server Error, status=500).
     * An invalid domain [.localhost.com] was specified for this cookie
     *
     * @return
     */
    @Bean
    public WebServerFactoryCustomizer<TomcatServletWebServerFactory> cookieProcessorCustomizer() {
        return (factory) -> factory.addContextCustomizers(
                (context) -> context.setCookieProcessor(new LegacyCookieProcessor()));
    }