针对Java的Google云端硬盘推送通知授权

Question

我试图从Google云端硬盘中的资源向我的服务器发送推送通知。我一直在寻找这个例子：

https://developers.google.com/drive/v3/web/push 

我试图翻译是对Java弄成这个样子：

RestTemplate restTemplate = new RestTemplate(); 

    HttpHeaders headers = new HttpHeaders(); 
    headers.setContentType(MediaType.APPLICATION_JSON); 
    MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>(); 
    map.add("id", "36d00d08-000d-4723-91bc-a1a6ec302e59"); 
    map.add("type", "web_hook"); 
    map.add("address", "https://mydomain.appspot.com/rest/drive"); 
    HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(map, headers); 
    ResponseEntity<String> response = restTemplate.postForEntity(uri, request, String.class); 

我以前一直在使用谷歌库的驱动器来访问文件。在这些情况下，我不需要以这种“手动”方式创建请求。我使用带有令牌的类GoogleAuthorizationCodeFlow来授权我的请求。我不确定我应该如何使用RestTemplate来做到这一点。我猜我需要做类似的事情：

headers.set("Authorization", X); 

X应该在这里？这是否是正确的方式来处理授权？

编辑：

这是我通过阅读秘密的尝试。结果是HTTP 401：

@Override 
    public String startListening() throws IOException { 
     final String fileId = "omitted"; 
     String uri = "https://www.googleapis.com/drive/v3/files/" + fileId + "/watch"; 
     HttpHeaders headers = getHeaders(getSecret()); 
     HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(getProperties(), headers); 
     RestTemplate restTemplate = new RestTemplate(); 
     ResponseEntity<String> response = restTemplate.postForEntity(uri, request, String.class); 
     return response.getStatusCode() + " " + response.getBody() + " " + response.getHeaders(); 
    } 

    private static HttpHeaders getHeaders(String theString) { 
     HttpHeaders headers = new HttpHeaders(); 
     headers.setContentType(MediaType.APPLICATION_JSON); 
     headers.set("Authorization", "Bearer " + theString); 
     return headers; 
    } 

    private static MultiValueMap<String, String> getProperties() { 
     MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>(); 
     map.add("id", "some uid"); 
     map.add("type", "web_hook"); 
     map.add("address", "https://mydomain.appspot.com/rest/drive"); 
     return map; 
    } 

    private static String getSecret() throws IOException { 
     InputStream in = 
       ConcreteDriveListenerFactory.class.getResourceAsStream("/drive_secret.json"); 
     StringWriter writer = new StringWriter(); 
     IOUtils.copy(in, writer, "UTF-8"); 
     return writer.toString(); 
    } 

Answer 1

正如@DalmTo所提到的，X代表令牌。关于Drive API的示例POST请求，请尝试使用此SO thread的此代码段。它也使用POST方法。

public static void main(String argv[]) throws Exception { 
    DefaultHttpClient httpClient = new DefaultHttpClient(); 
    HttpPost post = new HttpPost(
      "https://www.googleapis.com/drive/v2/files"); 
    post.addHeader("Content-Type", "application/json"); 
    post.addHeader("Authorization", 
      "Bearer XXXXXXXXXXXXXXXXXXXXXXXXX"); 

    JsonObject jsonObject = new JsonObject(); 
    jsonObject.addProperty("title", "Test folder"); 
    jsonObject 
      .addProperty("mimeType", "application/vnd.google-apps.folder"); 

    post.setEntity(new StringEntity(jsonObject.toString())); 
    httpClient.execute(post); 
}