Question

假设：

$cat build.sbt 
scalaVersion := "2.11.8"

libraryDependencies ++= List(
  "io.spray"          %% "spray-client"        % "1.3.3"
  ,"io.spray"          %%  "spray-json"         % "1.3.2"
  ,"com.typesafe.akka" %% "akka-actor"          % "2.4.2"
  ,"com.typesafe"      % "config" % "1.3.0"
  ,"org.scalatest" % "scalatest_2.11" % "2.2.6" % "test"
)

使用此answer，我尝试使用JDK 7.

但是，我收到了以下错误：

$sbt -java-home /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/ clean test
[info] Loading project definition from /Users/Kevin/Workspace/Work/project/project
[info] Set current project to project (in build file:/Users/Kevin/Workspace/Work/project/)
[success] Total time: 0 s, completed Mar 14, 2016 3:51:10 PM
[info] Updating {file:/Users/Kevin/Workspace/Work/project/}project...
[info] Resolving jline#jline;2.12.1 ...
[info] Done updating.
[info] Compiling 9 Scala sources to /Users/Kevin/Workspace/Work/project/target/scala-2.11/classes...
[error] Class java.time.Duration not found - continuing with a stub.
[error] Class java.time.Duration not found - continuing with a stub.
[error] two errors found
[error] (compile:compileIncremental) Compilation failed
[error] Total time: 5 s, completed Mar 14, 2016 3:51:16 PM

看看这个answer，我猜/我猜测我需要添加一个java8时间库作为依赖项？

Answer 1

我不确定如何解决此错误。

此错误表示您的代码中的某个位置正在java.time.Duration中继，这是Java 8中公开的新API。由于您已降级为Java 7，因此该类已不再可用

删除依赖项，或者恢复为Java8。

Answer 2

Akka 2.4需要JDK8，除非您使用的是商业版本，这在documentation中有所提及。

找不到类java.time.Duration - 继续使用存根

2 个答案: