I need create a rest client to access a URI that can receive 0 or n query params.
Example:
https://xpto?page=0&size=10&brand=abc&color=blue or
https://xpto?page=0&size=10&brand=abc or
https://xpto?page=0&size=10 or
https://xpto
how could i do this here?
@RegisterRestClient
public interface BarService {
@GET
@Path("/xpto")
Response get(@QueryParam ...);
}
CodePudding user response:
Please refer to How to send a query params map using RESTEasy proxy client, similar issue is being discussed.
You can define your client similar to below:
@RegisterRestClient
public interface BarService {
@GET
@Path("/xpto")
Response get(Map<String, String> queryParamMap);
}
And you can define ClientRequestFilter for converting the Map to Query Parameters:
import java.io.IOException;
import java.util.Map;
import javax.ws.rs.HttpMethod;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import javax.ws.rs.core.UriBuilder;
import javax.ws.rs.ext.Provider;
@Provider
public class QueryParamBuildingFilter implements ClientRequestFilter {
@Override
public void filter(ClientRequestContext requestContext) throws IOException {
if (requestContext.getEntity() instanceof Map && requestContext.getMethod().equals(HttpMethod.GET)) {
UriBuilder uriBuilder = UriBuilder.fromUri(requestContext.getUri());
Map allParam = (Map)requestContext.getEntity();
for (Object key : allParam.keySet()) {
uriBuilder.queryParam(key.toString(), allParam.get(key));
}
requestContext.setUri(uriBuilder.build());
requestContext.setEntity(null);
}
}
}