小编Zur*_*iar的帖子

"错误:无法确定所选JDK中的Java VM可执行文件"的原因是什么？

我正在使用IntelliJ IDEA 13.1.4并尝试了最新版本14.

运行SBT我收到以下错误:

Error:Cannot determine Java VM executable in selected JDK

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我在我的机器和PATH上安装了JDK 1.7.

在日志中(~/Library/Logs/IntelliJIdea14/idea.log在MacOS上),有以下堆栈跟踪:

2014-11-03 11:22:05,054 [4896641]   WARN - nal.AbstractExternalSystemTask - Cannot determine Java VM executable in selected JDK
com.intellij.openapi.externalSystem.model.ExternalSystemException: Cannot determine Java VM executable in selected JDK
    at org.jetbrains.sbt.project.SbtExternalSystemManager$$anonfun$10.apply(SbtExternalSystemManager.scala:97)
    at org.jetbrains.sbt.project.SbtExternalSystemManager$$anonfun$10.apply(SbtExternalSystemManager.scala:97)
    at scala.Option.getOrElse(Option.scala:120)
    at org.jetbrains.sbt.project.SbtExternalSystemManager$.executionSettingsFor(SbtExternalSystemManager.scala:96)
    at org.jetbrains.sbt.project.SbtExternalSystemManager$$anonfun$getExecutionSettingsProvider$1.apply(SbtExternalSystemManager.scala:54)
    at org.jetbrains.sbt.project.SbtExternalSystemManager$$anonfun$getExecutionSettingsProvider$1.apply(SbtExternalSystemManager.scala:54)
    at org.jetbrains.sbt.package$$anon$3.fun(package.scala:29)
    at org.jetbrains.sbt.package$$anon$3.fun(package.scala:28)
    at com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil.getExecutionSettings(ExternalSystemApiUtil.java:590)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.a(ExternalSystemFacadeManager.java:201)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.a(ExternalSystemFacadeManager.java:178)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doInvoke(ExternalSystemFacadeManager.java:133)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager$MyHandler.invoke(ExternalSystemFacadeManager.java:270)
    at com.sun.proxy.$Proxy57.getResolver(Unknown Source)
    at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:48)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:137)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:123)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$2.execute(ExternalSystemUtil.java:475)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3$1.run(ExternalSystemUtil.java:543) …

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intellij-idea sbt

Zur*_*iar

2014 11-03

110
推荐指数

5
解决办法

3万
查看次数

Redis是否持久保存数据？

我知道Redis提供来自内存的所有数据,但是它在服务器重启时也会持续存在,这样当服务器重新启动时,它会从磁盘读入内存中的所有数据.或者它总是一个空白的商店,只是在应用程序运行时没有持久性存储数据？

redis

Zur*_*iar

lucky-day

100
推荐指数

5
解决办法

5万
查看次数

是否可以只安装docker cli而不是守护进程

我想让docker CLI连接到远程守护进程但我是否需要在本地机器上安装包括守护进程在内的整个引擎？

docker

Zur*_*iar

2017 07-13

43
推荐指数

6
解决办法

2万
查看次数

在play框架JsObject中解析Json数组

我有以下Json:

{
  "web-category" : "macaroons",
  "sub-categories" : [
     { "name" : "pink" },
     { "name" : "blue" },
     { "name" : "green" }
  ]

}

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我在Play中作为JsObject得到它.所以我现在可以成功地做到以下几点:

//(o is the JsObject)

val webCat:Option[String] = (o \ "web-category").asOpt[String]

println(webCat.toString)

>> Some(macaroons)

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到现在为止还挺好.但是如何访问数组Json对象？我有这个...

val subCats:Option[JsArray] = (o \ "sub-categories").asOpt[JsArray]

println(subCats.toString)

>> Some([{"name" : "blue"},{"name" : "green"},{"name" : "pink"}])

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但我需要的是获取JsArray并得到所有名称的List,如下所示: