JSON Path Extractor in JMeter

Question

I am new to jmeter. Can anyone help me to use a response object of one request to be passed as a request header of next HTTP request ?

Let me explain.

I am getting an access token along with the response of login in my app:

{: "responseCode":18, : "message":"Successfully logged in.", : "responseObject":"8zWExE4eSdhcJDwnW9MgIw=="}
No I want to use this access token (8zWExE4eSdhcJDwnW9MgIw) as one of the parameter of next request.

I used JSON Path Extractor for this.But its not working.

But I have already tried using $.responseObject and $.responseObject[0] and its not working. Lemme explain what I have tried in this scenario. — fms
These are the components i have implemented in my test script. 1 HTTP Request Defaults 2 HTTP Cookie Manager 3. User Defined Variables (Inside this a variable is declared as "access_Token" and its value as "jsonVal", which is the JSON Path Extractor Name) 4. HTTP Request (Login) (This request is giving the response as { : "responseCode":18, : "message":"Successfully logged in.", : "responseObject":"NXVQR/bQBGJV4ugJOgpQeg==" } ) 4.1 HTTP Header Manager 4.2 JSON Path Extractor (Extractor name is jsonVal, which i have passed in User defined variables) — fms
5 HTTP Request (Reservation) its request body is like { "eventId":4446, "buyerId":10, "invCount":1, "eventPriceId":169 } 5.1 HTTP Header Manager Accept application/json Content-Type application/json accessToken ${access_Token} 6 Result Tree Response of Reservation Request is { : "responseCode":100, : "message":"Invalid Access Token." } — fms

Faflok Faflok · Accepted Answer · 2015-08-05T10:30:03

I am using JSON Path Extractor as well and it works great if it is properly configured. Just put it into request and fill fields:

Variable Name: access_token (or any other you want to use later in request like this ${access_token})
JSON Path: responseObject should be enough if the JSON you pasted is full response (thjose additional colons are just some mistakes when copy-pasting or the JSON is corrupted?)
Default Value: I always use some value like 'NotUpdated!' here so I can assert in the next step or at least see it easily in request.