"java.lang.RuntimeException: null" 使用 Reactive 查询时 Mongo 0.11

Question

我正在尝试使用带有 Play 2.4.2 和 Reactive Mongo 0.11.5.

的 JsonCollection selector = {} 查询集合

调用方法 collect[List].

时，在 play.api.libs.iteratee 深处的方法 foldM 中查询失败

我能追踪到的最后一个代码是 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 reactive mongo 0.10.5 和 play 2.3.9 移植过来的。

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$$anonfun$run.apply(Iteratee.scala:396) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.Iteratee$$anonfun$run.apply(Iteratee.scala:389) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.StepIteratee$$anonfun$fold.apply(Iteratee.scala:706) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at play.api.libs.iteratee.StepIteratee$$anonfun$fold.apply(Iteratee.scala:706) ~[play-iteratees_2.11-2.4.2.jar:2.4.2]
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1(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]

Answer 1

问题出在 DateTime 格式上我以前使用 mongo 格式的日期 { date: { $date: 1435723470549 } }.

这个问题解释了区别：Parsing a Json String in Scala using Play framework，我应该更新它以使用 JsDefined。

"java.lang.RuntimeException: null" 使用 Reactive 查询时 Mongo 0.11

"java.lang.RuntimeException: null" while querying with Reactive Mongo 0.11

mongodb

playframework

reactivemongo

play-reactivemongo