Scala 加特林-在收割台内未识别会话EL

我试图分离这个链，并将其保存在一个可重用的变量中

package computerdatabase

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import scala.concurrent.duration._
import io.gatling.jsonpath._

class Test1 extends Simulation {

  //Global Users
  val userMap = scala.collection.concurrent.TrieMap[String, String]()
  //Randomiser 
  val rnd = new scala.util.Random
  val httpConf = http
    .baseURL("http://demo1263864.mockable.io/") // Here is the root for all relative URLs
    .acceptHeader("application/json") // Here are the common headers
    .doNotTrackHeader("1")
    .acceptLanguageHeader("en-US,en;q=0.5")
    .acceptEncodingHeader("gzip, deflate")
    .userAgentHeader("Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:16.0) Gecko/20100101 Firefox/16.0")

  val headers_1 = scala.collection.mutable.Map("Content-Type" -> "application/json")

  val chain1 = exec(
      http("chain request ")
        .post("gatling1")
        .headers((headers_1 += "pList" -> "${pList}").toMap)
        .body(StringBody("""{"${pList}"}"""))
        .check(status.is(404)))

  val scn = scenario("Simple request")
    .exec(
      http("If request ")
        .get("gatling1")
        .headers(headers_1.toMap)
        .check(jsonPath("$.result").is("SUCCESS"),
          jsonPath("$.data[*]").ofType[Map[String, Any]].findAll.saveAs("pList")))
    .exec(chain1)

  setUp(scn.inject(atOnceUsers(1)).protocols(httpConf))
}

这可以很好地编译，但在运行时会出现以下错误

16:35:25.156[信息]i.g.h.c.HttpProtocol-启动预热

16:35:25.681[信息]i.g.h.c.HttpProtocol-预热完成

16:35:25.731[错误]i.g.h.a.HttpRequestAction-未命名属性 定义了“pList”

16:35:25.732[错误]i.g.h.a.HttpRequestAction-未命名属性 定义了“pList”

它没有给出任何行号，但我确信下面这行有问题

.headers((headers_1 += "pList" -> "${pList}").toMap)

当我在exec中使用chain1内联时，它工作得很好

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