LocationQueryService.java
package edu.ucsb.cs156.spring.backenddemo.services;
import java.util.List;
import java.util.Map;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestTemplate;
import lombok.extern.slf4j.Slf4j;
@Slf4j
@Service
public class LocationQueryService {
private final RestTemplate restTemplate;
public LocationQueryService(RestTemplateBuilder restTemplateBuilder) {
//todo
restTemplate = restTemplateBuilder.build();
}
public static final String ENDPOINT = "https://nominatim.openstreetmap.org/search.php?q={location}&format=jsonv2";
public String getJSON(String location) throws HttpClientErrorException {
//todo
//return "";
log.info("location={}", location);
HttpHeaders headers = new HttpHeaders();
headers.setAccept(List.of(MediaType.APPLICATION_JSON));
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> entity = new HttpEntity<>(headers);
Map<String, String> uriVariables = Map.of("location", location);
ResponseEntity<String> re = restTemplate.exchange(ENDPOINT, HttpMethod.GET, entity, String.class,
uriVariables);
return re.getBody();
}
}