如何对Facebook Marketing API进行POST调用？

Question

我正在尝试从我的应用程序对Facebook的图形API进行POST调用。该方法的相关摘录是：

RestTemplate restTemplate = new RestTemplate();

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.set("Authorization","Bearer "+ accessToken);

HttpEntity<EventSetVM> request = new HttpEntity<>(new EventSetVM(eventSetName), headers);

Map<String, String> params = new HashMap<>();
params.put("name", eventSetName);

String url = "https://graph.facebook.com/v2.8/" +
             businessManagerId +
             "/offline_conversion_data_sets";

EventSetVM eventSetVM = restTemplate.postForObject(url, request, EventSetVM.class, params);

我从Firefox的RESTClient获得的错误是

{
    "timestamp": 1487779045470,
    "status": 500,
    "error": "Internal Server Error",
    "exception": "org.springframework.web.client.HttpClientErrorException",
    "message": "400 Bad Request",
    "path": "<correct-path-with-no-parameters>"
}

这里发生了什么？

Answer 1

图表API在您的请求中需要显式的“access_token”参数。您需要在params中添加access_token参数。