Groovy脚本传递命令行参数失败，执行报错如何解决？

Hey there! Let's get this sorted out—your error comes from a tiny syntax misstep in your script, and once we fix that, your argument passing will work perfectly.

What Went Wrong #

In Groovy, when you reference the closure variable it directly inside println, you don’t need to wrap it with ${}. That syntax is only for string interpolation, not for passing a variable directly to a method. Your original code was trying to call a non-existent $() method on the closure, which triggered the MissingMethodException.

Corrected Script #

Here’s the fixed version of your script:

class Main { 
    static void main(String... args) { 
        args.each { println it } 
        // Or use explicit parentheses if you prefer: args.each { println(it) }
    } 
}

Your Argument-Passing Command is Correct! #

The Windows command you’re using is already right:

Groovy myscript.groovy "arg1" "arg2"

When you run this now, the script will loop through each argument and print them, giving you this output:

arg1
arg2

Bonus: String Interpolation Option #

If you ever want to include the argument in a formatted string, that’s where ${it} makes sense. For example:

args.each { println "Received argument: ${it}" }

This would output:

Received argument: arg1
Received argument: arg2

内容的提问来源于stack exchange，提问作者Cortlendt