Java使用自定义凭证通过Gremlin连接Cosmos DB失败

尝试用Gremlin和Maven在Java中连接需用户名密码验证的Cosmos DB，传入endpoint、用户名、密码及端口创建Cluster，再通过Cluster启动Client并创建根遍历查询数据库，但查询返回网络错误，集群可用主机数为0，怀疑问题出在Cluster创建环节。

已尝试用连接字符串替代单独传入凭证信息，也测试过Python脚本，均连接失败。

连接代码 #

private static GraphTraversalSource connect(String endpoint, String username, String password, int port) {
        System.out.println("STARTING");
        System.out.println("creating cluster");
        Cluster cluster = Cluster.build()
            .addContactPoint(endpoint)
            .port(port)
            .credentials(username, password)
            .enableSsl(true)
            .maxWaitForConnection(100000)  // 增加连接超时时间
            .maxContentLength(65536)
            .create();
        int numHosts = cluster.availableHosts().size();
        System.out.println("Cluster created successfully with the following hosts:");
        System.out.println(numHosts);
        System.out.println("Connecting");
        Client client = cluster.connect();
        System.out.println("Determining traversal source");
        // 定义源和目标图遍历源
        final GraphTraversalSource G = AnonymousTraversalSource.traversal().withRemote(DriverRemoteConnection.using(client));
        System.out.println("Finding count");
        try {
            long vertexCount = G.V().count().next();
            System.out.println("Source count: " + vertexCount);
        }
        catch(Exception e) {
            System.out.println("FAILED TO QUERY");
            System.exit(1);
        }
        return G;
    }

程序输出（已替换实际地址为endpoint） #

STARTING
creating cluster
Cluster创建成功，可用主机数：
0
Connecting
确定遍历源
查询顶点数量
09:28:44.187 [gremlin-driver-loop-1] ERROR o.a.t.g.d.Connection - 服务器关闭了通道2017caf4上的连接 - 计划从连接池中移除该连接 (Host{address=endpoint/internalIP, hostUri=wss://endpoint:port/gremlin})
连接池状态 (size=2 max=8 min=2 toCreate=0 bin=0)
==> Connection{channel=2017caf4 isDead=true borrowed=1 pending=1 markedReplaced=false closing=false created=2024-07-23T16:28:43.549866Z thread=gremlin-driver-conn-scheduler-1}
> Connection{channel=83a2625b isDead=false borrowed=0 pending=0 markedReplaced=false closing=false created=2024-07-23T16:28:43.549858Z thread=gremlin-driver-conn-scheduler-2}
-- 废弃连接 --
查询失败

进程退出，代码1

内容的提问来源于stack exchange，提问作者Nikhil Menon