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我正在尝试selector = {}使用 Play 2.4.2 和 Reactive Mongo 0.11.5 在 JsonCollection 上使用 findAll 查询集合。

在调用方法foldM的内部深处的方法中查询失败。play.api.libs.iterateecollect[List]

我可以追踪的最后一个代码是case Input.El(e) => { val newS = executeFuture(f(s, e))(pec); flatten(newS.map(s1 => Cont[E, A](step(s1)))(dec)) }.

此代码是从响应式 mongo 0.10.5 和 play 2.3.9 移植的。

堆栈跟踪：

java.lang.RuntimeException: null
        at scala.sys.package$.error(package.scala:27) ~[scala-library-2.11.6.jar:na]
        at play.api.libs.iteratee.Iteratee$$anonfun$run$1.apply(Iteratee.scala:396) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.Iteratee$$anonfun$run$1.apply(Iteratee.scala:389) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.StepIteratee$$anonfun$fold$2.apply(Iteratee.scala:706) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.StepIteratee$$anonfun$fold$2.apply(Iteratee.scala:706) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) ~[scala-library-2.11.6.jar:na]
        at play.api.libs.iteratee.Execution$trampoline$.executeScheduled(Execution.scala:109) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.Execution$trampoline$.execute(Execution.scala:71) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:40) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:248) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.Promise$class.complete(Promise.scala:55) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Promise$DefaultPromise.complete(Promise.scala:153) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:23) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.impl.ExecutionContextImpl$AdaptedForkJoinTask.exec(ExecutionContextImpl.scala:121) ~[scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [scala-library-2.11.6.jar:na]
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [scala-library-2.11.6.jar:na]
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1 回答 1

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问题出在 DateTime 格式上，我曾经使用 mongo 日期格式{ date: { $date: 1435723470549 } }。

这个问题解释了不同之处：Parsing a Json String in Scala using Play framework，我应该将其更新为 use JsDefined。

于 2015-08-04T03:57:53.657 回答