Specs2與期貨和case類

我有很多的問題，期貨工作作爲使用Scala的Dispatch異步HTTP調用的答案。我還用Case Class Matchers Specs2與期貨和case類

讓想我在這裏做一個電話：http://ip.jsontest.com/至極返回該JSON：

{

"ip": "x.xxx.xxx.xxx"

}

所以我建立我的規格爲這

import dispatch._ 
import Defaults._ 

import org.json4s._ 
import org.json4s.jackson.JsonMethods._ 
import org.specs2.concurrent.ExecutionEnv 
import org.specs2.mutable.Specification 


import org.specs2.matcher.MatcherMacros 
import scala.language.experimental.macros 

import scala.concurrent.duration._ 



class TestDispatchJSON extends Specification with MatcherMacros{ 

    implicit val formats = DefaultFormats 

    case class Direction(ip: String) 

    val translateAPI = url("http://ip.jsontest.com/") 

    val response = Http(translateAPI OK as.String) 

    val direction = for(json <- response) yield parse(json).extract[Direction] 




    "The direction" should { 

    "direction must be of class Direction" in { implicit ee: ExecutionEnv => 
     direction must matchA[Direction].ip("x.xxx.xxx.xxx").await(retries = 2, timeout = 10.seconds) 
    } 




    } 


}

但它不工作，我得到這個錯誤。

Testing started at 13:44 ... 
13:44:41.170 [New I/O worker #1] DEBUG c.n.h.c.p.n.r.NettyConnectListener - Request using non cached Channel '[id: 0x702a0c8a, /172.16.10.142:5548 => ip.jsontest.com/64.233.184.121:80]': 
DefaultHttpRequest(chunked: false) 
GET/HTTP/1.1 
Connection: keep-alive 
Host: ip.jsontest.com 
Accept: */* 
User-Agent: Dispatch/0.11.3 

13:44:41.335 [New I/O worker #1] DEBUG c.n.h.c.p.netty.handler.HttpProtocol - 

Request DefaultHttpRequest(chunked: false) 
GET/HTTP/1.1 
Connection: keep-alive 
Host: ip.jsontest.com 
Accept: */* 
User-Agent: Dispatch/0.11.3 

Response DefaultHttpResponse(chunked: true) 
HTTP/1.1 200 OK 
Access-Control-Allow-Origin: * 
Content-Type: application/json; charset=ISO-8859-1 
Vary: Accept-Encoding 
Date: Thu, 18 Jun 2015 11:44:41 GMT 
Server: Google Frontend 
Cache-Control: private 
Alternate-Protocol: 80:quic,p=0 
Accept-Ranges: none 
Transfer-Encoding: chunked 

13:44:41.337 [New I/O worker #1] DEBUG c.n.h.c.p.n.channel.ChannelManager - Adding key: http://ip.jsontest.com:80 for channel [id: 0x702a0c8a, /172.16.10.142:5548 => ip.jsontest.com/64.233.184.121:80] 

No usable value for $outer 
Can't find ScalaSig for class java.lang.Object 
org.json4s.package$MappingException: No usable value for $outer 
Can't find ScalaSig for class java.lang.Object 
    at org.json4s.reflect.package$.fail(package.scala:96) 
    at org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$buildCtorArg(Extraction.scala:462) 
    at org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482) 
    at org.json4s.Extraction$ClassInstanceBuilder$$anonfun$14.apply(Extraction.scala:482) 
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245) 
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245) 
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) 
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) 
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:245) 
    at scala.collection.AbstractTraversable.map(Traversable.scala:104) 
    at org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$instantiate(Extraction.scala:470) 
    at org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:515) 
    at org.json4s.Extraction$ClassInstanceBuilder$$anonfun$result$6.apply(Extraction.scala:512) 
    at org.json4s.Extraction$.org$json4s$Extraction$$customOrElse(Extraction.scala:524) 
    at org.json4s.Extraction$ClassInstanceBuilder.result(Extraction.scala:512) 
    at org.json4s.Extraction$.extract(Extraction.scala:351) 
    at org.json4s.Extraction$.extract(Extraction.scala:42) 
    at org.json4s.ExtractableJsonAstNode.extract(ExtractableJsonAstNode.scala:21) 
    at com.elevenpaths.TestDispatchJSON$$anonfun$1.apply(TestDispatchJSON.scala:35) 
    at com.elevenpaths.TestDispatchJSON$$anonfun$1.apply(TestDispatchJSON.scala:35) 
    at scala.util.Success$$anonfun$map$1.apply(Try.scala:236) 
    at scala.util.Try$.apply(Try.scala:191) 
    at scala.util.Success.map(Try.scala:236) 
    at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235) 
    at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235) 
    at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32) 
    at scala.concurrent.impl.ExecutionContextImpl$AdaptedForkJoinTask.exec(ExecutionContextImpl.scala:121) 
    at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) 
    at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253) 
    at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346) 
    at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) 
    at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) 
Caused by: org.json4s.package$MappingException: Can't find ScalaSig for class java.lang.Object 
    at org.json4s.reflect.ScalaSigReader$.findClass(ScalaSigReader.scala:42) 
    at org.json4s.reflect.ScalaSigReader$.org$json4s$reflect$ScalaSigReader$$read$1(ScalaSigReader.scala:36) 
    at org.json4s.reflect.ScalaSigReader$.org$json4s$reflect$ScalaSigReader$$read$1(ScalaSigReader.scala:36) 
    at org.json4s.reflect.ScalaSigReader$.readField(ScalaSigReader.scala:38) 
    at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$3.apply(Reflector.scala:66) 
    at org.json4s.reflect.Reflector$ClassDescriptorBuilder$$anonfun$3.apply(Reflector.scala:65) 
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245) 
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245) 
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) 
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48) 
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:245) 
    at scala.collection.AbstractTraversable.map(Traversable.scala:104) 
    at org.json4s.reflect.Reflector$ClassDescriptorBuilder.fields(Reflector.scala:65) 
    at org.json4s.reflect.Reflector$ClassDescriptorBuilder.fields(Reflector.scala:78) 
    at org.json4s.reflect.Reflector$ClassDescriptorBuilder.properties(Reflector.scala:82) 
    at org.json4s.reflect.Reflector$ClassDescriptorBuilder.result(Reflector.scala:158) 
    at org.json4s.reflect.Reflector$.createDescriptor(Reflector.scala:50) 
    at org.json4s.reflect.Reflector$$anonfun$describe$1.apply(Reflector.scala:44) 
    at org.json4s.reflect.Reflector$$anonfun$describe$1.apply(Reflector.scala:44) 
    at org.json4s.reflect.package$Memo.apply(package.scala:39) 
    at org.json4s.reflect.Reflector$.describe(Reflector.scala:44) 
    at org.json4s.Extraction$.extract(Extraction.scala:349) 
    at org.json4s.Extraction$ClassInstanceBuilder.org$json4s$Extraction$ClassInstanceBuilder$$buildCtorArg(Extraction.scala:450) 
    ... 30 more

方向應與退出代碼

過程完成0

我也希望有一個好方法裏面Specs2期貨工作，東陽我不喜歡的執行環境，請加進口喲你答案

來源

2015-06-18 anquegi

你試圖做什麼錯誤提示？要導入macros._不是宏 – melps

是的，這是正確的，我會糾正你 – anquegi

可以嘗試使用'懶val'，而不是'val'爲'formats'，'translateAPI'，'response'代碼和錯誤'direction'？另請參閱https://etorreborre.github.io/specs2/guide/SPECS2-3.6.1/org.specs2.guide.Environment.html以獲取訪問執行環境的更簡單方法。 – Eric

它看起來像JSON解析本身不起作用。 No usable value for $outer消息表明反射可能不適用於Direction作爲規範的內部類。所以你應該把它作爲一個頂級課程移到外面去。

來源

2015-06-19 22:58:55 Eric

Specs2與期貨和case類

回答

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