JMeter - how to log the full request for a failed response?

Question

i\'m using JMeter command line to stress test our website api. Now, here\'s a sample result i\'m getting back:

Creating summariser 

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Answer 1

This is how I log the full request (request URL + request body) for failed requests.

1. Add a Listener inside the Thread Group

try{
  var message = "";
  var currentUrl = sampler.getUrl();
  message +=  ". URL = " +currentUrl;
  var requestBody = sampler.getArguments().getArgument(0).getValue();
  message += " --data " + sampler.getArguments();

  if(!sampleResult.isSuccessful()){
      log.error(message);
  }

}catch(err){
  //do nothing. this could be a debug sampler. no need to log the error
}

For every Sampler inside the Thread Group, the Listener will execute this code after the Sampler.