As far as I’m aware, you can’t get an actual ResponseEntity, but the status code and body (if any) can be obtained from the exception: try { ResponseEntity<StoreDto> r = restTemplate.getForEntity(url, StoreDto.class, m); } catch (final HttpClientErrorException e) { System.out.println(e.getStatusCode()); System.out.println(e.getResponseBodyAsString()); }
RestTemplate and HttpClient don’t operate at the same abstraction level. HttpClient is a general-purpose library to communicate using HTTP, whereas RestTemplate is a higher-level abstraction, dealing with JSON/XML transformation of entities, etc. RestTemplate delegates to a ClientHttpRequestFactory, and one of the implementations of this interface uses Apache’s HttpClient. So, if the goal is to communicate … Read more
I would use buildAndExpand from UriComponentsBuilder to pass all types of URI parameters. For example: String url = “http://test.com/solarSystem/planets/{planet}/moons/{moon}”; // URI (URL) parameters Map<String, String> urlParams = new HashMap<>(); urlParams.put(“planet”, “Mars”); urlParams.put(“moon”, “Phobos”); // Query parameters UriComponentsBuilder builder = UriComponentsBuilder.fromUriString(url) // Add query parameter .queryParam(“firstName”, “Mark”) .queryParam(“lastName”, “Watney”); System.out.println(builder.buildAndExpand(urlParams).toUri()); /** * Console output: * http://test.com/solarSystem/planets/Mars/moons/Phobos?firstName=Mark&lastName=Watney … Read more
Edit: The other answers are better (use Resource) https://stackoverflow.com/a/36226006/116509 My original answer: You can use execute for this kind of low-level operation. In this snippet I’ve used Commons IO’s copy method to copy the input stream. You would need to customize the HttpMessageConverterExtractor for the kind of response you’re expecting. final InputStream fis = new … Read more
Ok, I finally figured it out. The exchange method is exactly what i need. It returns an HttpEntity which contains the full headers. RestTemplate template = new RestTemplate(); HttpEntity<String> response = template.exchange(url, HttpMethod.POST, request, String.class); String resultString = response.getBody(); HttpHeaders headers = response.getHeaders();
When migrating from Spring Boot 1.x to 2.0, changed the code reading the Rest API response as import com.fasterxml.jackson.annotation.JsonCreator; import com.fasterxml.jackson.annotation.JsonProperty; import com.fasterxml.jackson.databind.JsonNode; import org.springframework.data.domain.PageImpl; import org.springframework.data.domain.PageRequest; import org.springframework.data.domain.Pageable; import java.util.ArrayList; import java.util.List; public class RestPageImpl<T> extends PageImpl<T>{ @JsonCreator(mode = JsonCreator.Mode.PROPERTIES) public RestPageImpl(@JsonProperty(“content”) List<T> content, @JsonProperty(“number”) int number, @JsonProperty(“size”) int size, @JsonProperty(“totalElements”) Long totalElements, @JsonProperty(“pageable”) … Read more
Reading the whole file in a ByteArrayResource can be a memory consumption issue with large files. You can proxy a file upload in a spring mvc controller using a InputStreamResource: @RequestMapping(value = “/upload”, method = RequestMethod.POST) public ResponseEntity<?> uploadImages(@RequestPart(“images”) final MultipartFile[] files) throws IOException { LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>(); String response; HttpStatus httpStatus … Read more
A way to solve this without needing to use a FileSystemResource that requires a file on disk, is to use a ByteArrayResource, that way you can send a byte array in your post (this code works with Spring 3.2.3): MultiValueMap<String, Object> map = new LinkedMultiValueMap<String, Object>(); final String filename=”somefile.txt”; map.add(“name”, filename); map.add(“filename”, filename); ByteArrayResource contentsAsResource … Read more
Instead of catching RestClientException, catch the special HttpClientErrorException. Here’s an example: try { Link dataCenterLink = serviceInstance.getLink(“dataCenter”); String dataCenterUrl = dataCenterLink.getHref(); DataCenterResource dataCenter = restTemplate.getForObject(dataCenterUrl, DataCenterResource.class); serviceInstance.setDataCenter(dataCenter); } catch (HttpClientErrorException e) { HttpStatus status = e.getStatusCode(); if (status != HttpStatus.NOT_FOUND) { throw e; } } HttpClientErrorException provides getStatusCode and getResponseBodyAsByteArray to get the status code … Read more
With the following method call List<MyModelClass> myModelClass=(List<MyModelClass>) restTemplate.postForObject(url,mvm,List.class); All Jackson knows is that you want a List, but doesn’t have any restriction on the type. By default Jackson deserializes a JSON object into a LinkedHashMap, so that’s why you are getting the ClassCastException. If your returned JSON is an array, one way to get it … Read more