Create json from array and send it in POST request body

Question

Consider a variable in jMeter which contains ["beep1","beep2","beep3"]

I would like to create a JSON for a POST request which looks like this:

{
    "foo": {            
        "bar": {
            "baz": [
            {
                "value": "beep1"
            },
            {
                "value": "beep2"
            },
            {
                "value": "beep3"
            }]
        }
    }
}

Answer 1

You can do it using any of JSR223 Test Elements, the relevant code would be something like:

def builder = new groovy.json.JsonBuilder()
builder {
    foo {
        bar
                {
                    baz(Eval.me(vars.get('myVar')).collect { beep ->
                        [
                                value: beep

                        ]
                    })
                }
    }
}

Demo:

More information:

• Groovy: Parsing and producing JSON
• Groovy: JsonBuilder
• Apache Groovy - Why and How You Should Use It