scala:运行一个 play-slick 示例导致导入错误

Question

这里绝对是 Scala 初学者。我在 macOS X 中安装了 scala 2.12.1。

我正在尝试设置来自 here 的示例 computer-database Play-Slick 示例

一旦我 cd 进入计算机数据库，我运行 sbt run，它导致了这个错误:

error: not found: value PlayKeys "PlayKeys.playOmnidoc := false"

这些是文件夹根目录下 build.sbt 的默认内容:

name := "computer-database-sample"
PlayKeys.playOmnidoc := false

我尝试将以下行添加到 build.sbt 以在 PlayKeys 调用之前显式导入 play-slick:

libraryDependencies ++= Seq(
    "com.typesafe.slick" %% "slick" % "2.0.0",
    "com.typesafe.play" %% "play-slick" % "0.6.0.1",
    "com.typesafe.slick" %% "slick-extensions" % "3.1.0"
)

但我仍然遇到同样的错误。

我错过了什么吗？这是应该如何设置 Scala 项目吗？

Answer 1

停止你正在做的任何修改，恢复它们(你需要从 repo 获得干净的版本)。

执行以下操作(不是最快的 root，但可以让您边走边探索其他方面的事情):

1) 转到 repo 根目录。

2) 类型:sbt - 如果它不起作用，请先安装 sbt

3) 在第 2 点成功后，您应该会看到以下内容:

[pdolega@maracuja play-slick]$ sbt
[info] Loading project definition from /home/pdolega/projects/slick/play-slick/project
[info] Compiling 1 Scala source to /home/pdolega/projects/slick/play-slick/project/target/scala-2.10/sbt-0.13/classes...
Missing bintray credentials /home/pdolega/.bintray/.credentials. Some bintray features depend on this.
Missing bintray credentials /home/pdolega/.bintray/.credentials. Some bintray features depend on this.
Missing bintray credentials /home/pdolega/.bintray/.credentials. Some bintray features depend on this.
Missing bintray credentials /home/pdolega/.bintray/.credentials. Some bintray features depend on this.
Missing bintray credentials /home/pdolega/.bintray/.credentials. Some bintray features depend on this.
Missing bintray credentials /home/pdolega/.bintray/.credentials. Some bintray features depend on this.
[info] Set current project to play-slick-root (in build file:/home/pdolega/projects/slick/play-slick/)

>

4) 类型:项目。你会看到所有的 sbt 子项目:

> projects
[info] In file:/home/pdolega/projects/slick/play-slick/
[info]     basic-sample
[info]     computer-database-sample
[info]     docs
[info]     iteratee-sample
[info]     play-slick
[info]     play-slick-evolutions
[info]   * play-slick-root
[info]     samples
> 

4) 键入project computer-database-sample <- 这将使您想要的子项目处于事件状态。

> project computer-database-sample
[info] Set current project to computer-database-sample (in build file:/home/pdolega/projects/slick/play-slick/)
[computer-database-sample] $

5) 现在您可以为安装执行 test ，它将运行编译和之后的所有测试。或者您可以键入 run 来启动这个示例 Play 应用程序。

[computer-database-sample] $ run
[warn] Credentials file /home/pdolega/.bintray/.credentials does not exist

--- (Running the application, auto-reloading is enabled) ---

[info] p.c.s.NettyServer - Listening for HTTP on /0:0:0:0:0:0:0:0:9000

(Server started, use Ctrl+D to stop and go back to the console...)