Gatling convert Json array to Map

Question

I have json such as ["123","123a","12c3","1f23","e123","r123"] as response from rest server.

I want to parse this json as Collection and iterate over it and make exec request over each element in it such as :

SERVER + "/get?param=${el}" where el will be 123,123a,12c3,1f23,e123 and r123

My question is how can I do it.

either parse it by hand or use a JSON library: manuel.bernhardt.io/2015/11/06/… — maasg
– maasg, Commented Nov 11, 2016 at 13:15

radumanolescu · Accepted Answer · 2016-11-11 13:35:34Z

2

You can do something like this:

import org.json4s._
import org.json4s.jackson.JsonMethods._
object JSonToMap {
  def main(args: Array[String]) {
    implicit val fmt = org.json4s.DefaultFormats
    val json = parse("""{ "response" : ["123","123a","12c3","1f23","e123","r123"] }""")
    val jsonResp = json.extract[JsonResp]
    println(jsonResp)
    jsonResp.response.foreach { param => 
      println(s"SERVER /get?param=${param}")
    }

  }
  case class JsonResp(response: Seq[String], somethingElse: Option[String])
}

Now you have a case class where the "response" member is a list of your strings. You can then manipulate this list however you need to create the requests to SERVER.

edited Nov 11, 2016 at 13:35

answered Nov 11, 2016 at 13:23

radumanolescu

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2 Comments

Yordan Borisov Over a year ago

This is not answering my question. I have to execute request 1 to get the Json parse the Json and make multiple requests depending on the count of elements in the request 1 response

radumanolescu Over a year ago

Sorry - not sure I understand which parts you know how to do and which not. For instance: "execute request 1 to get the Json" - is that the problem? "parse the Json" - does the above solution work? "make multiple requests depending on the count of elements in the request 1 response" - this is something you have not mentioned in the original question. After you parse the JSON, you have a list containing all the elements of the "request 1 response", no? Please clarify question.

FlavienBert · Accepted Answer · 2016-11-25 17:48:21Z

1

You should try something like this:

exec(
  http("my request")
    .get("/myrequest")
    .check(status.is(200))
    .check(jsonPath("$").ofType[Seq[String]].saveAs("params"))
).foreach("${params}", "param") {
  exec(http("request with parameter ${param}")
    .get("/get")
    .queryParam("param", "$param")
  )
}

answered Nov 25, 2016 at 17:48

FlavienBert

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