使用 play 2.2 jars 运行 Scala 控制台 [英] Run scala console with play 2.2 jars

问题描述

我看到有人在 Scala 控制台中使用 play api.如何将多个 play 的 jars 导入到 Scala 控制台?

I saw people using play apis in the scala console. How can I import multiple play's jars to scala console?

https://stackoverflow.com/a/17684559/772481

我试过这个命令，但没有用.

I tried this command, but it didn't work.

$ scala -cp /usr/local/Cellar/play/2.2.0/libexec/repository/local/com.typesafe.play/play_2.10/2.2.0/jars/*.jar

推荐答案

你的方法是对的.scala REPL 理解所有 scalac 选项，所以 scala -cp 是正确的选项.但是，您必须在 Unix 上以冒号分隔的类路径中单独列出所有 jar.

Your approach was right. scala REPL understands all scalac options, so scala -cp is the right option. However, you'll have to list all jars separately in the classpath separated by colon on Unix.

如果你像我一样懒惰并且不想拼出所有的 jar 文件，你可以使用这样的东西来构建类路径:

If you are lazy like me and don't want to spell out all jar files you can use something like this to build the classpath:

ls -1 ~/.ivy2/cache/com.typesafe/config/jars/config-1.0.* | tr '\n' ':' | sed 's/:$/\n/'

产生:

/home/alex/.ivy2/cache/com.typesafe/config/jars/config-1.0.0.jar:/home/alex/.ivy2/cache/com.typesafe/config/jars/config-1.0.2.jar

在您的原始命令中使用它:

Use it in your original command:

scala -cp "$(ls -1 /usr/local/Cellar/play/2.2.0/libexec/repository/local/com.typesafe.play/play_2.10/2.2.0/jars/*.jar | tr '\n' ':' | sed 's/:$/\n/')"

如果您想避免指定目录，请使用 find 而不是 ls:

If you want to avoid specifying a directory use find instead of ls:

find ~/.ivy2/cache/com.typesafe/config/jars/ -name "*.jar" -exec echo {} \; | tr '\n' ':' | sed 's/:$/\n/'

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