Spring Rest Template with Basic Auth + JSON - e.g. for Wordpress WP JSON API

RestTemplateBasicAuth.java

public class RemoteApi {
	protected RestTemplate restTemplate;

	public RemoteApi() {
		restTemplate = new RestTemplate();
		restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
	}

	protected HttpHeaders getHttpHeaders() {
		HttpHeaders requestHeaders = new HttpHeaders();
		requestHeaders.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
		requestHeaders.set("Authorization", "Basic ABC==");
		return requestHeaders;
	}

	protected HttpEntity<?> getHttpEntity() {
		return new HttpEntity<Post>(getHttpHeaders());
	}

	public List<Post> read() {
		return Arrays.asList(restTemplate.exchange("http://example.com/wp-json/posts", HttpMethod.GET, getHttpEntity(), Post[].class).getBody());
	}

	public Post write(Post post) {
		HttpEntity<Post> httpEntity = new HttpEntity<>(post, getHttpHeaders());
		ResponseEntity<Post> result = restTemplate.exchange("http://example.com/wp-json/posts/123", HttpMethod.POST, httpEntity, Post.class);
		return result.getBody();
	}
}

@JsonIgnoreProperties(ignoreUnknown = true)
public class Post {
  @JsonProperty("ID")
  private long id;
  private String title;
  private String status;
  private String type;
  private String content;
  private long parent;
  private String link;
  private Date date;
  private Date modified;
  private String standard;
  private String slug;
  private String guid;
  private String excerpt;
  @JsonProperty("ping_status")
  private String pingStatus;
  @JsonProperty("date_ts")
  private String dateTimeZone;
  @JsonProperty("date_gmt")
  private Date dateGmt;
  private Map<String, List<Term>> terms;
  
  /* getter + setter */
}

I have a Wordpress wp-json/posts to request through RestTemplate, but I c'ant make it work, it doesn't need any authentication, a simple GET from the browser/PostMan to the wp-json/posts actually works but through RestTemplate I get "Request Rejected The requested URL was rejected Please consult with your administrator" message :/ Any idea ?

I figured it out and set "requestHeaders.set("User-Agent", "Mozilla/5.0");" to let Wordpress think i'm a browser !