使用HttpClient将照片上传到Facebook

我正在尝试使用以下代码使用Graph API将照片上传到Facebook。 我一直收到“错误请求”，但不确定原因。 我可以使用相同参数的curl上传照片。 我正在使用Java和HttpClient。

PostMethod filePost = new PostMethod('https://graph.facebook.com/me/photos'); filePost.setParameter('access_token', 'my-access-token') filePost.setParameter('message', 'test image') filePost.getParams().setBooleanParameter(HttpMethodParams.USE_EXPECT_CONTINUE, false); try { println("Uploading " + file.getName() + " to 'https://graph.facebook.com/me/photos'"); Part[] parts = [new FilePart('source', file.getName(), file)] filePost.setRequestEntity(new MultipartRequestEntity(parts, filePost.getParams())); HttpClient client = new HttpClient(); client.getHttpConnectionManager().getParams().setConnectionTimeout(5000); int status = client.executeMethod(filePost); if (status == HttpStatus.SC_OK) { println( "Upload complete, response=" + filePost.getResponseBodyAsString() ); } else { println( "Upload failed, response=" + HttpStatus.getStatusText(status) ); } } catch (Exception ex) { println("ERROR: " + ex.getClass().getName() + " " + ex.getMessage()); ex.printStackTrace(); } finally { filePost.releaseConnection(); } 

更新：更多内容。 我从响应中获取了更多信息，我得到了这个：

{“error”：{“type”：“OAuthException”，“message”：“必须使用有效的访问令牌来查询有关当前用户的信息。”}}

但这似乎并不正确，因为我正在使用facebook在授权过程后给我回复的访问令牌。

工作curl代码：

 curl -F 'access_token=my-access-token' -F 'source=@/path/to/image.jpg' -F 'message=Some caption' https://graph.facebook.com/me/photos 

Answer 1

我解决了这个问题。 我没有将params添加到PostMethod，而是需要将access_token和消息添加到Part []数组中。 完整代码：

  PostMethod filePost = new PostMethod('https://graph.facebook.com/me/photos'); filePost.getParams().setBooleanParameter(HttpMethodParams.USE_EXPECT_CONTINUE, false); try { println("Uploading " + file.getName() + " to 'https://graph.facebook.com/me/photos'"); Part[] parts = [new FilePart('source', file.getName(), file), new StringPart('access_token', "${facebookData.access_token}"), new StringPart('message', 'some message')] filePost.setRequestEntity(new MultipartRequestEntity(parts, filePost.getParams())); HttpClient client = new HttpClient(); client.getHttpConnectionManager().getParams().setConnectionTimeout(5000); int status = client.executeMethod(filePost); if (status == HttpStatus.SC_OK) { println("Upload complete, response=" + filePost.getResponseBodyAsString()); } else { println("Upload failed, response=" + HttpStatus.getStatusText(status)); // Create response StringBuilder notificationsSendResponse = new StringBuilder(); byte[] byteArrayNotifications = new byte[4096]; for (int n; (n = filePost.getResponseBodyAsStream().read(byteArrayNotifications)) != -1;) { notificationsSendResponse.append(new String(byteArrayNotifications, 0, n)); } String notificationInfo = notificationsSendResponse.toString(); } } catch (Exception ex) { println("ERROR: " + ex.getClass().getName() + " " + ex.getMessage()); ex.printStackTrace(); } finally { filePost.releaseConnection(); } 

Answer 2

您可以使用socialauth java api通过Web应用程序上传图像。

http://code.google.com/p/socialauth/

Answer 3

这是android版本的方法

  private void postOnFacebook() { try { HttpPost httpPost = new HttpPost("https://graph.facebook.com/me/photos"); MultipartEntity entity = new MultipartEntity(); String base64Image = "iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAIAAAACDbGyAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAASSURBVBhXY3gro4KMKOPLqAAAq/UdZuRmLacAAAAASUVORK5CYII="; byte[] imageData = Base64.decode(base64Image, 0); entity.addPart("access_token", new StringBody("your access token")); entity.addPart("message", new StringBody("test msg")); entity.addPart("source", new ByteArrayBody(imageData, "test")); CloseableHttpClient httpclient = HttpClientBuilder.create().build(); httpPost.getParams().setBooleanParameter(USE_EXPECT_CONTINUE, false); httpPost.setEntity(entity); HttpResponse resp = httpclient.execute(httpPost); HttpEntity entity2 = resp.getEntity(); if (entity != null) { String responseBody = EntityUtils.toString(entity2); responseBody.toString(); } } catch (Exception ex) { ex.printStackTrace(); } }