小编gkn*_*uth的帖子

在index-dev.html我加载本地JavaScript文件:

<script type="text/javascript" src="map.js"></script>

map.js 结构上(不是字面意思)看起来像这样:

var a2b = {
  "a": "My life closed twice before its close—",
  "b": "It yet remains to see",
  "c": "If Immortality unveil",
  "d": "A third event to me",

  "e": "So huge, so hopeless to conceive",
  "f": "As these that twice befell.",
  "g": "Parting is all we know of heaven,",
  "h": "And all we need of hell.",

  "z": "Emily Dickinson, 1830-1886"
}

我想出了如何将此对象加载到Scala.js:

val a2b = js.Dynamic.global.a2b

现在a2b是类型Dynamic.我想要的是Map[String,String] …

我正在使用:

import scala.collection.JavaConverters._
import scala.collection.Set

这有效:

val a: java.util.HashSet[java.lang.Long] =  javaFunction(...)
val b: Set[java.lang.Long] = a.asScala.toSet

但我想要的是一个Set[Long],而不是一个Set[java.lang.Long].当我尝试这个:

val a: java.util.HashSet[java.lang.Long] =  javaFunction(...)
val b: Set[Long] = a.asScala.toSet

我明白了:Expression of type scala.collection.immutable.Set[java.lang.Long] doesn't conform to expected type scala.collection.Set[Long].

为什么这样,我怎么得到Set[Long]？

我必须在其 MANIFEST.MF 中部署一个具有非常特定类路径的 JAR。我将如何配置 sbt 以便打包的 JAR 具有这个特定的类路径（例如）：

.
lib/abc.jar
lib/xyz.jar
../../lib/maven/com/fasterxml/jackson/core/jackson-annotations/2.2.3/jackson-annotations-2.2.3.jar
../../lib/maven/com/fasterxml/jackson/core/jackson-core/2.2.3/jackson-core-2.2.3.jar
../../lib/maven/com/fasterxml/jackson/core/jackson-databind/2.2.3/jackson-databind-2.2.3.jar
../../lib/maven/commons-codec/commons-codec/1.9/commons-codec-1.9.jar
../../lib/maven/commons-io/commons-io/2.4/commons-io-2.4.jar
../../lib/maven/joda-time/joda-time/2.5/joda-time-2.5.jar
../../lib/maven/log4j/log4j/1.2.11/log4j-1.2.11.jar
../../lib/database/SQLServer2008/3.0.1301.101/sqljdbc4.jar

（当然，真正的将包括 Scala。）

我有一个Scala PlayFramework函数调用MongoDB并获得 Future[Seq[Document]]结果.在地图缩放/平移事件之后,Action通过xhttp/GET从网页上的JavaScript调用此Play 功能.Play侧的My Action方法在onComplete/Success执行Future之前返回.所以我正在寻找一种方法来调用JavaScript函数来获取Scala Future的onComplete/Success触发时的数据.我该怎么做,还是我看错了？

这是有问题的代码.

def rect(swLon: Float, swLat: Float, neLon: Float, neLat: Float) = Action {
  val sb = new StringBuilder()
  sb.append("<tt>boundingBox: swLon=" + swLon + ", swLat=" + swLat + ", neLon=" + neLon + ", neLat=" + neLat + "</tt>")
  if (oDb.isDefined) {
    val collection: MongoCollection[Document] = oDb.get.getCollection(collectionName)
    val fut = getFutureOne(collection) // returns a Future[Seq[Document]]
    fut onComplete {
      case Success(docs) => { for (doc <- docs) { setMongoJson(doc.toJson } …