如果我没理解错的话，你可以使用DnsResolver。你可能会使用，比如说，一个restTemplate来进行网络调用，你可以通过定制它的DnsResolver来增强它的HttpClient。

class RestTemplateWithDnsOverrideConfig {
@Bean
RestTemplate createRestTemplate() {
    return new RestTemplate(
            new HttpComponentsClientHttpRequestFactory(
                    HttpClientBuilder.create()
                            .setDnsResolver(createDnsResolver())
                            .build()
            )
    )
}
private DnsResolver createDnsResolver() {
    return new DnsResolver() {
        @Override
        InetAddress[] resolve(String host) throws UnknownHostException {
            return [Inet4Address.getByAddress([127, 0, 0, 1] as byte[])]
        }
    }
}

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}
也结帐this答案