如何進行Facebook營銷API的POST調用？

Question

我想從我的應用程序進行POST調用Facebook的圖形API。該方法的相關摘錄：

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); 

從Firefox的RESTClient實現我得到的錯誤是

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

這是怎麼回事？

Answer 1

圖API在你的請求中需要顯式的「access_token」參數。你需要在你的params中添加你的access_token參數。