REST POST 与 POSTMAN 一起正常工作，但在使用 Spring RestTemplate 时出现异常

Question

新手上路，请多包涵

我正在编写一个 Rest 客户端来使用 Spring RestTemplate 发布 JSON 数据。使用 POSTMAN 并在正文中跟踪 JSON 数据可以正确获得响应-

 {
    "InCode":"test",
    "Name":"This is  test",
    "Email":"test@gmail.com",
    "Id":18,
}

但是，当尝试使用 Spring RestTemplate 访问 REST API 时，如下所示

ResponseEntity<String> response = restTemplate.exchange(baseUrl,
                HttpMethod.POST, getHeaders(), String.class);

private HttpEntity<?> getHeaders() throws JSONException {
JSONObject request = new JSONObject();
        request.put("Email", "test@gmail.com");
        request.put("Id", "18");
        request.put("Name", "This is  test");
        request.put("InCode", "test");

        headers.set("Accept", MediaType.APPLICATION_JSON_VALUE);
        return new HttpEntity<>(request.toString(), headers);
        }

我得到例外-

 11:52:56.808 [main] DEBUG o.s.web.client.RestTemplate - Created POST request for "http://server-test/platform/v4/org"
11:52:56.815 [main] DEBUG o.s.web.client.RestTemplate - Setting request Accept header to [text/plain, application/json, application/*+json, */*]
12:03:47.357 [main] DEBUG o.s.web.client.RestTemplate - Writing [{"InCode":"test","Email":"test@gmail.com","Id":"18","Name":"This is  test"}] using [org.springframework.http.converter.StringHttpMessageConverter@6a1aab78]
11:52:57.574 [main] DEBUG o.s.web.client.RestTemplate - POST request for "http://server-test/platform/v4/org" resulted in 500 (Internal Server Error); invoking error handler
Exception in thread "main" org.springframework.web.client.HttpServerErrorException: 500 Internal Server Error
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:94)
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:641)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:597)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:557)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:475)

将不胜感激任何帮助。