Get STRING response from restTemplate.put

Question

I'm having a problem using Spring restTemplate.

For now i'm sending a PUT request for a restful service and that restful service send me back important informations in response.

The question is that restTemplate.put are a void method and not a string so i can't see that response.

Following some answers i've change my method and now i'm using restTemplate.exchange, here are my method:

public String confirmAppointment(String clientMail, String appId)
{
    String myJsonString = doLogin();

    Response r = new Gson().fromJson(myJsonString, Response.class);

    // MultiValueMap<String, String> map;
    // map = new LinkedMultiValueMap<String, String>();

    // JSONObject json;
    // json = new JSONObject();

    // json.put("status","1");

    // map.add("data",json.toString());

    String url = getApiUrl() + "company/" + getCompanyId() + "/appointment/" + appId + "?session_token=" + r.data.session_token;
    String jsonp = "{\"data\":[{\"status\":\"1\"}]}";

    RestTemplate rest = new RestTemplate();

    HttpHeaders headers = new HttpHeaders();
    headers.add("Content-Type", "application/json");
    headers.add("Accept", "*/*");

    HttpEntity<String> requestEntity = new HttpEntity<String>(jsonp, headers);
    ResponseEntity<String> responseEntity = 
            rest.exchange(url, HttpMethod.PUT, requestEntity, String.class);

    return responseEntity.getBody().toString();
}

Using the method above, i receive a 400 Bad Request

I know my parameters, url and so, are just fine, cause i can do a restTemplate.put request like this:

try {
    restTemplate.put(getApiUrl() + "company/" + getCompanyId() + "/appointment/" + appId + "?session_token=" + r.data.session_token, map);
} catch(RestClientException j)
{
    return j.toString();
}

The problem (like i said before) is that the try/catch above does not return any response but it gives me a 200 response.

So now i ask, what can be wrong?

Answer 1

Here's how you can check the response to a PUT. You have to use template.exchange(...) to have full control / inspection of the request/response.

    String url = "http://localhost:9000/identities/{id}";       
    Long id = 2l;
    String requestBody = "{\"status\":\"testStatus2\"}";
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON); 
    HttpEntity<String> entity = new HttpEntity<String>(requestBody, headers); 
    ResponseEntity<String> response = template.exchange(url, HttpMethod.PUT, entity, String.class, id);
    // check the response, e.g. Location header,  Status, and body
    response.getHeaders().getLocation();
    response.getStatusCode();
    String responseBody = response.getBody();