有一个github issue解决此问题，它仍然处于打开状态。
只要spring cool团队解决了这个问题，你就可以创建一个自定义的curator config类，并将身份验证信息添加到CuratorFrameworkFactory类的builder方法中：

@BootstrapConfiguration
    @ConditionalOnZookeeperEnabled
    public class CustomCuratorFrameworkConfig {

        @Autowired(required = false)
        private EnsembleProvider ensembleProvider;

        @Bean
        @ConditionalOnMissingBean
        public ZookeeperProperties zookeeperProperties() {
            return new ZookeeperProperties();
        }

        @Bean
        @ConditionalOnMissingBean
        public CuratorFramework curatorFramework(RetryPolicy retryPolicy, ZookeeperProperties properties) throws Exception{
            // username and password of the ACL digest scheme
            String zkUsername = "user";
            String zkPassword = "password";

            CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
            if (this.ensembleProvider != null) {
                builder.ensembleProvider(this.ensembleProvider);
            } else {
                builder.connectString(properties.getConnectString());
            }

            builder.retryPolicy(retryPolicy);

                String authenticationString = zkUsername + ":" + zkPassword;
                builder.authorization("digest", authenticationString.getBytes())
                        .aclProvider(new ACLProvider() {
                            @Override
                            public List<ACL> getDefaultAcl() {
                                return ZooDefs.Ids.CREATOR_ALL_ACL;
                            }

                            @Override
                            public List<ACL> getAclForPath(String path) {
                                return ZooDefs.Ids.CREATOR_ALL_ACL;
                            }
                        });

            CuratorFramework curator =  builder.build();
            curator.start();
curator.blockUntilConnected(properties.getBlockUntilConnectedWait(), properties.getBlockUntilConnectedUnit());
            return curator;
        }

        @Bean
        @ConditionalOnMissingBean
        public RetryPolicy exponentialBackoffRetry(ZookeeperProperties properties) {
            return new ExponentialBackoffRetry(properties.getBaseSleepTimeMs(), properties.getMaxRetries(), properties.getMaxSleepMs());
        }

    }

然后继续像这个spring文档：
您可以注册要在此阶段运行的配置类，方法是使用@BootstrapConfiguration注解它们，并将它们包含在一个逗号分隔的列表中，该列表设置为resources/META-INF/spring.factories文件中的org.springframework.cloud.bootstrap.BootstrapConfiguration属性的值

resources/META-INF/spring.factories

org.springframework.cloud.bootstrap.BootstrapConfiguration=\
my.project.CustomCuratorFrameworkConfig