MongoDB：如何处理无效的ObjectID

Question

以下是我通过ObjectID查找文档的代码：

def find(selector: JsValue, projection: Option[JsValue], sort: Option[JsValue],
  page: Int, perPage: Int): Future[Seq[JsValue]] = {

  var query = collection.genericQueryBuilder.query(selector).options(
    QueryOpts(skipN = page * perPage)
  )

  projection.map(value => query = query.projection(value))
  sort.map(value => query = query.sort(value.as[JsObject]))

  // this is the line where the call crashes
  query.cursor[JsValue].collect[Vector](perPage).transform(
    success => success,
    failure => failure match {
      case e: LastError => DaoException(e.message, Some(DATABASE_ERROR))
    }
  )
}

现在让我们假设我们使用无效的ObjectID调用此方法：

// ObjectId 53125e9c2004006d04b605abK is invalid (ends with a K)
find(Json.obj("_id" -> Json.obj("$oid" -> "53125e9c2004006d04b605abK")), None, None, 0, 25)

在query.cursor[JsValue].collect[Vector](perPage)方法中执行find时，上述调用会导致以下异常：

Caused by: java.util.NoSuchElementException: JsError.get
        at play.api.libs.json.JsError.get(JsResult.scala:11) ~[play-json_2.10.jar:2.2.1]
        at play.api.libs.json.JsError.get(JsResult.scala:10) ~[play-json_2.10.jar:2.2.1]
        at play.modules.reactivemongo.json.collection.JSONGenericHandlers$StructureBufferWriter$.write(jsoncollection.scala:44) ~[play2-reactivemongo_2.10-0.10.2.jar:0.10.2]
        at play.modules.reactivemongo.json.collection.JSONGenericHandlers$StructureBufferWriter$.write(jsoncollection.scala:42) ~[play2-reactivemongo_2.10-0.10.2.jar:0.10.2]
        at reactivemongo.api.collections.GenericQueryBuilder$class.reactivemongo$api$collections$GenericQueryBuilder$$write(genericcollection.scala:323) ~[reactivemongo_2.10-0.10.0.jar:0.10.0]
        at reactivemongo.api.collections.GenericQueryBuilder$class.cursor(genericcollection.scala:342) ~[reactivemongo_2.10-0.10.0.jar:0.10.0]
        at play.modules.reactivemongo.json.collection.JSONQueryBuilder.cursor(jsoncollection.scala:110) ~[play2-reactivemongo_2.10-0.10.2.jar:0.10.2]
        at reactivemongo.api.collections.GenericQueryBuilder$class.cursor(genericcollection.scala:331) ~[reactivemongo_2.10-0.10.0.jar:0.10.0]
        at play.modules.reactivemongo.json.collection.JSONQueryBuilder.cursor(jsoncollection.scala:110) ~[play2-reactivemongo_2.10-0.10.2.jar:0.10.2]
        at services.common.mongo.MongoDaoComponent$MongoDao$$anon$1.find(MongoDaoComponent.scala:249) ~[classes/:na]
        ... 25 common frames omitted

有什么想法吗？感谢。