我正在尝试使用 async mongoClient 连接到 aws DocumentDB。
我在 aws 中创建了一个 DocumentDB 集群,并通过 ssh 命令行成功连接。
我去了这里并创建了 MongoClient 并成功连接并插入事件。
但是当我尝试创建 com.mongodb.async.client.MongoClient 时,连接失败并出现以下错误:
WritableServerSelector 没有从集群描述中选择服务器 ClusterDescription{type=REPLICA_SET, connectionMode=MULTIPLE, serverDescriptions=[ServerDescription{address=aws-cluster:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketReadTimeoutException: Timeout while接收消息},由 {io.netty.handler.timeout.ReadTimeoutException}}]} 引起。在超时之前等待 30000 毫秒。
ClusterSettings clusterSettings = ClusterSettings.builder()
.applyConnectionString(new ConnectionString(connectionString)).build();
List<MongoCredential> credentials = new ArrayList<>();
credentials.add(
MongoCredential.createCredential(
mongoUserName,
mongoDBName,
mongoPassword));
MongoClientSettings settings = MongoClientSettings.builder()
.credentialList(credentials)
.clusterSettings(clusterSettings)
.streamFactoryFactory(new NettyStreamFactoryFactory())
.writeConcern(WriteConcern.ACKNOWLEDGED)
.build();
com.mongodb.async.client.MongoClient mongoClient = MongoClients.create(settings);
MongoDatabase testDB = mongoClient.getDatabase("myDB");
MongoCollection<Document> collection = testDB.getCollection("test");
Document doc = new Document("name", "MongoDB").append("type", "database");
//**trying insert document => here I got an error**
collection.insertOne(doc, new SingleResultCallback<Void>() {
@Override
public void onResult(final Void result, final Throwable t) {
System.out.println("Inserted!");
}
});
你有什么想法,为什么会这样?