load testing - How to send csv file or json data in post request in jmeter?

Question

I have a post request naming 'Register' which will allow users to upload .csv files or .json files I want to test the load on this API with different CSV /JSON files for different users. I have added files path in 'PLAN.CSV' .Each file contain JSON DATA- Please guide Request image and result image is attached hereResquest

Response

CSV CONFIG SET

Answer 1

1. Your syntax is incorrect, the valid one for the __FileToString() function would be:

   ${__FileToString(${JSON_FILE},,)}
   

   Consider using Functions Helper Dialog if you're uncertain

2. Your setup doesn't really "upload" the file, it sends the file as the HTTP POST body, the "upload" assumes either PUT or POST with multipart-form/data. Again if you're not sure that you're building the request correctly just record it using JMeter's HTTP(S) Test Script Recorder, just make sure that the file(s) you're uploading are present in "bin" folder of your JMeter installation