3

错误信息：

org.bson.codecs.configuration.CodecConfigurationException: Can't find a codec for class org.mongodb.scala.bson.collection.immutable.Document

代码：

def queueWrite(collection: String, filter: Map[String, () => String], data: Map[String, () => String]) {
    val col = collections.get(collection).get

    val filterBson = Document()
    filter.foreach(f => { filterBson.append(f._1, f._2.apply) })

    val dataBson = Document()
    data.foreach(f => { dataBson.append(f._1, f._2.apply) })

    val options = new FindOneAndUpdateOptions
    options.returnDocument(ReturnDocument.AFTER)
    options.upsert(true)

    val observer = new Observer[Document] {
      override def onNext(doc: Document) = println(doc.toJson)
      override def onError(e: Throwable) = e.printStackTrace
      override def onComplete = println("onComplete")
    }

    val observable: Observable[Document] = col.findOneAndUpdate(filterBson, dataBson, options)
    observable.subscribe(observer)

  }

调用：

val filter = Map[String, () => String]("uuid", p.getUniqueId.toString)

var dataMap = Map[String, () => String]()
dataMap = dataMap.+("uuid" -> p.getUniqueId.toString)
dataMap = dataMap.+("nickname" -> p.getDisplayName)

queueWrite("players", filter, dataMap)

我试过使用可变文档，但后来意识到 findoneandupdate 返回一个不可变的。我也尝试使用 BsonDocument 作为过滤器，但那个 ofc 没有效果。我不太确定从这里去哪里，任何帮助将不胜感激:)

4

1 回答 1

2 
private val settings = MongoClientSettings.builder
    .clusterSettings(clusterSettings)
    .build

我的 MongoClientSettings 之前看起来像这样，我需要将其更改为：

private val settings = MongoClientSettings.builder
    .clusterSettings(clusterSettings)
    .codecRegistry(MongoClient.DEFAULT_CODEC_REGISTRY)
    .build

似乎 mongo 没有假设默认编解码器注册表

感谢@Ross 的帮助！

于 2017-03-28T17:00:28.517 回答