MongoDB写入操作上的ConnectionNotInitialized异常

我有两个Docker容器：

运行MongoDB

使用ReactiveMongo连接到所述MongoDB的服务

我用于连接MongoDB的代码：

trait MongoHelper {
  this: BaseConfig =>

  val dbKey: String
  val collKey: String
  lazy val mongoConfig = persistenceConfig.getConfig( dbKey )
  lazy val servers = persistenceConfig.getStringList( s"$dbKey.servers" ).asScala
  lazy val database = persistenceConfig.getString( s"$dbKey.database" )
  lazy val username = persistenceConfig.getString( s"$dbKey.username" )
  lazy val password = persistenceConfig.getString( s"$dbKey.password" )
  lazy val credentials = Seq( Authenticate( database, username, password ) )


  lazy val conOpts = MongoConnectionOptions( authSource = Some( database ), authMode = ScramSha1Authentication )

  lazy val driver = new MongoDriver
  lazy val connection = driver.connection( servers, authentications = credentials, options = conOpts )

  lazy val db = connection( database )

}

连接似乎很好，因为我可以毫无问题地从中读取。但是，当我尝试插入或更新文档时，我遇到了以下异常：

reactivemongo.core.errors.ConnectionNotInitialized: MongoError['Connection is missing metadata (like protocol version, etc.) The connection pool is probably being initialized.']
at reactivemongo.core.errors.ConnectionNotInitialized$.MissingMetadata(errors.scala:71)
at reactivemongo.api.collections.GenericCollection$$anonfun$insert$1.apply(genericcollection.scala:338)
at reactivemongo.api.collections.GenericCollection$$anonfun$insert$1.apply(genericcollection.scala:314)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at scala.concurrent.impl.ExecutionContextImpl$AdaptedForkJoinTask.exec(ExecutionContextImpl.scala:121)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

---

但这对我来说毫无意义，连接池必须初始化，因为我正在使用它从数据库中读取数据。

上次我这样做时，我与一个具有错误凭据的用户IIRC一起登录数据库。使用

connection.database（…）

而不是

connection（…）

（或其别名

connection.DB（…）

，要有正确的DB分辨率。您应该有一个弃用警告。@Jean Philippellet非常感谢，这就成功了！我的Docker脚本应该创建用户，但显然他们没有被创建。。尽管我试图验证的用户不存在，但我仍然可以阅读，这很奇怪。错误消息不仅仅是误导性的。您应该有一个编译警告，指示

.db

已被弃用（由于其同步问题）。