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GROOVY I am getting random backslashes when creating JSON file in Folder

I am having trouble compiling the JSON file. This is my method (the main method just has the name of the method I am writing this code in it so I did not include the main method in here.)

static void buildJSONFiles() {
        String commandJson = "C:/Users/Name/Desktop/docfiles/command_config.json"
        def data = [
                commands:
                        JsonOutput.toJson([new Commands(name:"upload", path:"${BUILTIN_EXE(command)}", includeCommandName: true),
                                           new Commands(name:"file_info", path:"${BUILTIN_EXE(command)}", includeCommandName: true)])
        ]

        println(data)

        def json_str = JsonOutput.toJson(data)
        def json_beauty = JsonOutput.prettyPrint(json_str)
        File file = new File(commandJson)
        file.write(json_beauty)
        println(json_str)

    }


    static class Commands {
        String name
        String path
        boolean includeCommandName
    }

my output in the console does come out right like this

[commands:[{"includeCommandName":true,"path":"${BUILTIN_EXE(command)}","name":"upload"},{"includeCommandName":true,"path":"${BUILTIN_EXE(command)}","name":"file_info"}]]

but sending it to the JSON file it comes out like this

{"commands":"[{"includeCommandName":true,"path":"${BUILTIN_EXE(command)}","name":"upload"},{"includeCommandName":true,"path":"${BUILTIN_EXE(command)}","name":"file_info"}]"}

I understand that JSON backslash is a special character so I expected it to be only around the :”${BUILTIN_EXE(command)} but it is showing up everywhere where I did not even have a backslash.

Answer

You don’t have “random backslashes”, you have double-quoted JSON, since you’re using JsonOutput twice. json_str is a string with JSON in it, and then you’re wrapping that as a JSON value inside more JSON.