RESTFUL Web Service - List - web-services

Question

I have a client application requesting a list of channels from a webservice. Is it possible to take the "response" from the web service and store it in an ArrayList?
Meaning if I wanted to store a list of channels for example, it would normally come from the web service as a response, typically from ResponseBuilder.
And I want to store it in an ArrayList from the client, like List.
How would I go about doing that?

Answer 1

You can use TypeReference to instantiate your Channel object list, here is an example:
import com.fasterxml.jackson.core.type.TypeReference;
public class ChannelClient {
public void getChannels() {
Response serviceResponse = client.target("http://your_service_url/channels/").
request(MediaType.APPLICATION_JSON).get(Response.class);
String responseString = serviceResponse.readEntity(String.class);
List<Channel> list = new ObjectMapper().readerFor(new TypeReference<List<Channel>>() {
}).readValue(responseString);
}
}
Make sure to have Jersey JSON Jackson jar in your dependencies, you can get it from here
https://mvnrepository.com/artifact/org.glassfish.jersey.media/jersey-media-json-jackson/2.26-b07
EDIT: In case you want to consume MediaType.TEXT_PLAIN response, you will just change the request method argument to your specified type like this:
Response serviceResponse = client.target("http://your_service_url/channels/").
request(MediaType.TEXT_PLAIN).get(Response.class);