How to set the request body via Postman’s pre-request script?

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If the request needs to be of type application/x-www-form-urlencoded:

const options = {
  url:  'http://some/url', 
  method: 'POST',
  header: {
    'Accept': '*/*',
    'Content-Type': 'application/x-www-form-urlencoded',
  },
  body: {
    mode: 'urlencoded',
    urlencoded : [
      { key: 'loginIdentity', value: 'admic'},
      { key: 'password', value: 'abc123'},
    ]
  }
};

pm.sendRequest(options, function (err, res) {
  // Use the err and res 
  // ...
  pm.environment.set("my-token", res.json().access_token);
});

Postman Javascript API references:

  • Request
  • RequestBody

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