Spring RestTemplate usage

RestTemplateSamples.java

package com.cenkc.samples;

import org.springframework.http.*;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.util.UriComponentsBuilder;

import java.net.URISyntaxException;
import java.util.Arrays;

public class RestTemplateSamples {

  public static void main(String[] args) throws URISyntaxException {

  /*
    http://127.0.0.1/api/v1/poi/getSomeLocationInfo?lat=40.93563&lon=29.216923&radius=5000&limit=20
  */
    
    String url = "http://127.0.0.1/api/v1/poi/getSomeLocationInfo";
    
    RestTemplate restTemplate = new RestTemplate();

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_XML);
    headers.setAccept(Arrays.asList(MediaType.APPLICATION_XML));
    HttpEntity<String> entity = new HttpEntity(null, headers);

    UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url)
            .queryParam("lat", 40.93563)
            .queryParam("lon", 29.216923)
            .queryParam("radius", 5000)
            .queryParam("limit", 20);

    // getForObject / getForEntity does not support request headers, use exchange() instead
    ResponseEntity<String> responseEntity = restTemplate.exchange(builder.build().toUri(), HttpMethod.GET, entity, String.class);
    if (responseEntity.getStatusCode().equals(HttpStatus.OK)) {
      System.out.println("responseEntity.getBody() = " + responseEntity.getBody());
    }
  }
}