无法提取响应:找不到适合响应类型类和内容类型 [text/html] 的 HttpMessageConverter

Question

当通过 Rest API 发布请求时，结果是

内容类型：应用程序/JSON

{
"error": "file content is not in the appropriate format",
"file_name": "15-10-2019-11-19-32_KKK.csv"
}

当我尝试在我这边编码时，我使用以下代码

public RestTemplate restTemplateBuilder() {
RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory());
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
ObjectMapper mapper = new ObjectMapper();
mapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true);
converter.setObjectMapper(mapper);
restTemplate.getMessageConverters().add(0, converter);
restTemplate.setErrorHandler(new RestTemplateHandler());
return restTemplate;
}
RestTemplate restTemplate = restTemplateBuilder();
ResponseEntity<FileUploadResponseDTO> serviceResponse = restTemplate.exchange(url, HttpMethod.POST, requestEntity, FileUploadResponseDTO.class);

org.springframework.web.client.RestClientException： 无法提取响应： 找不到适合响应类型的 HttpMessageConverter [....FileUploadResponseDTO] 和内容类型 [text/html] 给出错误。如何转换？

Answer 1

您可以将内容类型标头添加到 RestTemplate：

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> requestEntity = new HttpEntity<String>(headers);