javeme commented on issue #1911:
URL:
https://github.com/apache/incubator-hugegraph/issues/1911#issuecomment-1173716634
感谢反馈，经过分析发现是`StandardAuthenticator`未实现`Authenticator.newSaslNegotiator()`方法导致的，欢迎贡献代码。
具体实现流程可参考：
```java
// StandardAuthenticator.newSaslNegotiator()
@Override
public SaslNegotiator newSaslNegotiator(InetAddress remoteAddress) {
throw new StandardAuthenticator.PlainTextSaslNegotiator();
}
```
可参考如下实现Tinkerpop的[SimpleAuthenticator.PlainTextSaslAuthenticator](https://github.com/apache/tinkerpop/blob/master/gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/auth/SimpleAuthenticator.java#L118)实现：
```java
// SimpleAuthenticator.PlainTextSaslAuthenticator
private class PlainTextSaslAuthenticator implements
Authenticator.SaslNegotiator {
// ...
}
```
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