REST client:

import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.client.RestTemplate;

import com.ns.model.UdsTransactionRequest;
import com.ns.model.UfsReferenceNumber;
import com.ns.model.notification.UfsPipeline;
import com.ns.service.ServiceResponse;

	@SuppressWarnings("unchecked")
	private void testGet2() {

		RestTemplate restTemplate = new RestTemplate();

		Long txId = 123456789L;
		String[] array = {"6B","EL","SO","RN","KK"};

		String url = "http://localhost:8080/transaction/references/pipeline/{txId}/?types={types}";

		ServiceResponse<UfsReferenceNumber> response = restTemplate.getForObject(url, ServiceResponse.class, txId, StringUtils.join(array, ","));

		List<UfsReferenceNumber> results = response.getData();
		if (results != null && !results.isEmpty()) {
			for (UfsReferenceNumber a : results) {
				System.out.println("---------------- ID: " + a.getId().getRefNum());
			}
		}
		System.out.println("---------------- END testGet2------------------");
	}

This gives the URL:

http://localhost:8080/transaction/references/pipeline/123456789/?types=6B,EL,SO,RN,KK

The “request.getParameter(“types”);” gets the values from URL “types=6B,EL,SO,RN,KK”.

REST endpoint:

@RequestMapping(value = "/references/pipeline/{txId}/", method = RequestMethod.GET)
public ServiceResponse<UfsReferenceNumber> getReferences(@PathVariable String txId, HttpServletRequest request) {
	ServiceResponse<UfsReferenceNumber> response = new ServiceResponse<>();
	String typesCsv = request.getParameter("types");
	List<String> types = null;
	List<UfsReferenceNumber> references = null;
	if (null != typesCsv && 0 != typesCsv.length()) {
		types = Arrays.asList(typesCsv.split(","));
	}
	try {
		references = repo.getTxnReferenceNumbers(new Long(txId), types);
		if (null != references && !references.isEmpty()) {
			response.setData(references);
		}
	} catch (Exception e) {
	}
	return response;
}