Java 415响应时不支持的媒体类型<；地图<；字符串，字符串>&燃气轮机；响应

我在尝试获取以下响应时遇到以下错误

private static final ParameterizedTypeReference<Map<String, String>> mapTypeReference = new ParameterizedTypeReference<Map<String, String>>() {
    };


ResponseEntity<Map<String, String>> response = restTemplate.exchange(url, HttpMethod.POST, new HttpEntity<Object>(httpHeaders), mapTypeReference);

错误：

org.springframework.web.client.HttpClientErrorException: 415 Unsupported Media Type
        at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:88)
        at org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:537)
        at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:493)
        at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:452)
        at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:425)

---

对于ContentType和Accept标头，也可以使用以下方法：

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON);

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON);