从shell脚本运行scala脚本 [英] Run scala script from shell script

问题描述

我有一个Scala项目，其中包含Scala类/对象以及脚本。我正在尝试从命令行运行脚本（使用类/对象执行各种操作）。我正在寻找的方式是创建一个外壳，该外壳将作为脚本名称以及脚本本身采用的参数作为参数传递。

I have a Scala project that contains both Scala classes/objects as well as scripts. I am trying to run the scripts (that use the classes/objects to perform various actions) from command line. The way I am looking to do this is to create a shell that would be passed as argument the name of the script, as well as the arguments that the script itself takes.

我的文件夹结构如下：

runner.sh -> script I am trying to implement to run the Scala scripts
bin/ -> script I am trying to implement to run the Scala scripts
lib/ -> -> rest of scala project, packed as multiple jars 

我当前正在创建变量 shell脚本中的LIB_CLASSPATH 包含 lib / 文件夹的内容，我正在尝试按以下方式运行脚本：

I am currently creating a variable LIB_CLASSPATH in the shell script that contains the contents of the lib/ folder and I am trying to run my scrips as follows:

java -cp $LIB_CLASSPATH ./bin/<name_of_script.scala> <parameters of the script>

我总是会遇到相同的错误：

I always get back the same error:

Could not find or load main class: ..lib/<name of jar> 
-- <name of jar> is actually the first jar in the lib/ folder

我可以使用一些指南:)

I could use some guidance :)

推荐答案

您可以使用 Ammonite （由@lihaoyi编写）。

You can use Ammonite (written by @lihaoyi).

它是更好的Scala REPL，Shell，OPs库和脚本运行器的组合。
在此处查看文档- http://www.lihaoyi.com/Ammonite/

It's a combination of a better Scala REPL, Shell, OPs library, and Script runner. See the docs here - http://www.lihaoyi.com/Ammonite/

10分钟的演讲展示了如何更好地编写脚本&外壳- https://www.youtube.com/watch?v=wk2-ZsQU358

10 min talk showing how is it better for scripting & shell - https://www.youtube.com/watch?v=wk2-ZsQU358

我认为这也是一个很好的起点。谈话是我给的：）

I think it can be a good starting point as well. Talk was given by me :)

这篇关于从shell脚本运行scala脚本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！