如何在 Jmeter 中定义正则表达式？

Question

my problem is that I need to define a regular expression in Jmeter in order to make a DELETE method in my page. The real problem is that I cannot delete a specific token with an ID.

I defined a regular Expression which his name is "uidprofesor" that refers to the token. This token, when I try to delete it manually and catch the request, I get the following code in the Raw Response Data:

{"headers":
  {"Location":["/api/profesores/5c745065-3155-4ff7-ac65-7699a36f611c"],
              "X-afppApp-alert":["afppApp.profesor.created"],
              "X-afppApp-params":["5c745065-3155-4ff7-ac65-7699a36f611c"]},
              "body":{"id":"5c745065-3155-4ff7-ac65-7699a36f611c",
              "nif":"12345678Q",
              "name":"jmeter_122",
              "firstSurname":"jmeter_122",
              "secondSurname":"",
              "address":"",
              "postalCode":"",
              "telephone":"",
              "mobile":"",
              "email":"",
              "dateInsert":"24/04/2019"
  },
 "statusCode":"CREATED",
 "statusCodeValue":201
}

, where I assume that "5c745065-3155-4ff7-ac65-7699a36f611c" is the ID.

If I wanted to define "uidprofesor" to catch that ID what should I define in the regular erxpression?

I tried defining the regular expression like:

{"headers":"(.+?)"

{"headers":{"Location":"(.+?)"

{"Location":"(.+?)"

But nothing. It shows the Default Value: NOT_FOUND and does not delete the selected token.

I let you here some extra info:

regular expression ${uidprofesor} = {"headers":"(.+?)"

In the HTTP Request the Path is:

https://desa1eap7.asturias.es/afpp-back/${uidprofesor}

If I do the deletion manually, in Google Chrome Developer Tab, It returns:

Requested URL: https://desa1eap7.asturias.es/afpp-back/api/profesores

If you need more info just ask it. Thanks.

Answer 1

Use jMeter JSON Extractor: https://jmeter.apache.org/usermanual/component_reference.html#JSON_Extractor

It uses JsonPath https://goessner.net/articles/JsonPath/

$.headers.Location[0]

Check online here https://jsonpath.com/