resttemplate getForObject map responsetype

Question

Update 02/05/2018 (about 4 years later)...I tested this again as people have been upvoting my question/answer and Sotirios Delimanolis is correct that I should not h

Answer 1

RestTemplate has a method named exchange that takes an instance of ParameterizedTypeReference as parameter.

To make a GET request that returns a java.util.Map, just create an instance of an anonym class that inherits from ParameterizedTypeReference.

ParameterizedTypeReference> responseType = 
               new ParameterizedTypeReference>() {};

You can then invoke the exchange method:

RequestEntity request = RequestEntity.get(URI("http://example.com/foo"))
                 .accept(MediaType.APPLICATION_JSON).build()
Map jsonDictionary = restTemplate.exchange(request, responseType)