Jackson error “Illegal character… only regular white space allowed” when parsing JSON

Question

I am trying to retrieve JSON data from a URL but get the following error:

Illegal character ((CTRL-CHAR, code 31)):
only regular white space (\\r, \\n,\\t) i         


        

Answer 1

We had the same issue in out integration tests recently. We have a spring boot application and we use wiremock to mock a integrated microservice server. For one of the test get requests that we had implemented we started getting this error. We had to downgrade wiremock from 2.18.0 to 2.17.0 and it worked fine. Due to some bug the jackson parser and the that particular version of wiremock didn't work together. We didnt have time to figure out what actually the bug was in those libraries.