@Override
	public HttpHeaders getHeaders() {
		Map<String, List<String>> headers = new HashMap<>();
		headers.put(HttpHeaders.CONTENT_TYPE,
				Arrays.asList(MediaType.APPLICATION_JSON_VALUE));
		HttpHeaders httpHeaders = new HttpHeaders();
		httpHeaders.putAll(headers);
		return httpHeaders;
	}
Using by {@link SentinelRestTemplate} and {@link SentinelProtectInterceptor}.

@author <a href="mailto:fangjian0423@gmail.com">Jim</a>
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-sentinel/src/main/java/com/alibaba/cloud/sentinel/rest/SentinelClientHttpResponse.java