java api REST 客户端出现 POST 错误 : no suitable HttpMessageConverter

Question

我使用 Maven + Spring，我想使用 RestTemplate().postForEntity(url, request, responseType) + Content-Type=application/json但我有这个错误:

org.springframework.web.client.RestClientException:无法写入请求:找不到适合请求类型 [com.kizeoforms.model.User] 和内容类型 [application/json] 的合适 HttpMessageConverter

java REST 客户端代码:

User user = new User();
user.setUser("foo");
user.setPassword("**********");
user.setCompany("xxxxxx");

MultiValueMap<String, String> headers = new LinkedMultiValueMap<String, String>();
headers.add("Content-Type", "application/json");
HttpEntity<User> request = new HttpEntity<User>(user, headers);
ResponseEntity<Object> response = new RestTemplate().postForEntity("https://www.kizeoforms.com:443/rest/v3/login", request, Object.class);
System.out.println(response.getStatusCode());

Answer 1

我有 new MappingJackson2HttpMessageConverter() 到 restTemplate:

RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
ResponseEntity<Object> response = restTemplate.postForEntity("https://www.kizeoforms.com:443/rest/v3/login", request, Object.class);