Spring RestTemplate invoking webservice with errors and analyze status code

Question

I designed a webservice to perform a task if request parameters are OK, or return 401 Unauthorized HTTP status code if request parameters are wrong or empty.

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Answer 1

Since Spring 4.3, There is a RestClientResponseException which contain actual HTTP response data, such as status code, response body and headers. And you can catch it.

RestClientResponseException Java Doc