java - 分块上传视频文件

Question

是的，这是一个很长的问题，有很多细节... 所以，我的问题是:如何分段将上传内容流式传输到 Vimeo？

对于任何想要在自己的机器上复制和调试的人:以下是您需要的东西:

我的代码 here .

包括找到的 Scribe 库 here

有一个至少大于 10 MB 的有效视频文件 (mp4) 并将其放入目录 C:\test.mp4或更改该代码以指向您所在的任何位置。

就是这样!谢谢你的协助!

大更新:我在代码中为 Vimeo 留下了一个有效的 API key 和 secret here .因此，只要您拥有 Vimeo 帐户，一旦您允许该应用程序并输入您的 token ，所有代码都应该适合您。只需将该链接中的代码复制到您最喜欢的 IDE 上的项目中，看看您是否可以与我一起解决此问题。我会给给我工作代码的人赏金。谢谢!哦，不要指望长时间使用这个 Key 和 Secret。一旦这个问题解决了，我会删除它。 :)

问题概述:问题是当我将最后一个字节块发送到 Vimeo 然后验证上传时，响应返回所有内容的长度仅为最后一个块的长度，而不是所有块的组合。

SSCCE 注:我有我的整个 SSCCE here .我把它放在其他地方，所以它可以是 C 可编译。不是很 小号 hort(大约 300 行)，但希望您发现它是 小号 包含 Sprite ，当然是 E 示例!)。然而，我在这篇文章中发布了我的代码的相关部分。

这是它的工作原理:当您通过流式传输方法将视频上传到 Vimeo 时(请参阅上传 API 文档 here 以进行设置以达到这一点)，您必须提供一些标题:端点、内容长度和内容类型。文档说它忽略任何其他标题。您还可以为您上传的文件提供字节信息的有效负载。然后签名并发送它(我有一个方法可以使用 scribe 来做到这一点)。

我的问题:当我只在一个请求中发送视频时，一切都很好。我的问题是，当我上传几个更大的文件时，我使用的计算机没有足够的内存来加载所有这些字节信息并将其放入 HTTP PUT 请求中，因此我必须将其拆分为1 MB 段。这就是事情变得棘手的地方。文档提到可以“恢复”上传，所以我试图用我的代码来做到这一点，但它工作得不太正确。下面，您将看到发送视频的代码。 记住 我的 SSCCE 是 here .

我试过的东西:我认为它与 Content-Range header 有关......所以这里是我尝试改变 Content-Range header 所说的内容......

未将内容范围 header 添加到第一个块

向内容范围 header 添加前缀(每个都包含前一个 header 的组合):

“字节”

“bytes”(抛出连接错误，错误见最底部)-->它出现在documentation中这就是他们正在寻找的内容，但我很确定文档中有错别字，因为他们的“简历”示例中的内容范围标题为:1001-339108/339108什么时候应该1001-339107/339108 .所以...是的...

"bytes%20"

“字节:”

“字节:”

“字节=”

“字节=”

不向内容范围标题添加任何前缀

这是代码:

/**
* Send the video data
*
* @return whether the video successfully sent
*/
private static boolean sendVideo(String endpoint, File file) throws FileNotFoundException, IOException {
  // Setup File
  long contentLength = file.length();
  String contentLengthString = Long.toString(contentLength);
  FileInputStream is = new FileInputStream(file);
  int bufferSize = 10485760; // 10 MB = 10485760 bytes
  byte[] bytesPortion = new byte[bufferSize];
  int byteNumber = 0;
  int maxAttempts = 1;
  while (is.read(bytesPortion, 0, bufferSize) != -1) {
    String contentRange = Integer.toString(byteNumber);
    long bytesLeft = contentLength - byteNumber;
    System.out.println(newline + newline + "Bytes Left: " + bytesLeft);
    if (bytesLeft < bufferSize) {
      //copy the bytesPortion array into a smaller array containing only the remaining bytes
      bytesPortion = Arrays.copyOf(bytesPortion, (int) bytesLeft);
      //This just makes it so it doesn't throw an IndexOutOfBounds exception on the next while iteration. It shouldn't get past another iteration
      bufferSize = (int) bytesLeft;
    }
    byteNumber += bytesPortion.length;
    contentRange += "-" + (byteNumber - 1) + "/" + contentLengthString;
    int attempts = 0;
    boolean success = false;
    while (attempts < maxAttempts && !success) {
      int bytesOnServer = sendVideoBytes("Test video", endpoint, contentLengthString, "video/mp4", contentRange, bytesPortion, first);
      if (bytesOnServer == byteNumber) {
        success = true;
      } else {
        System.out.println(bytesOnServer + " != " + byteNumber);
        System.out.println("Success is not true!");
      }
      attempts++;
    }
    first = true;
    if (!success) {
      return false;
    }
  }
  return true;
}

/**
* Sends the given bytes to the given endpoint
*
* @return the last byte on the server (from verifyUpload(endpoint))
*/
private static int sendVideoBytes(String videoTitle, String endpoint, String contentLength, String fileType, String contentRange, byte[] fileBytes, boolean addContentRange) throws FileNotFoundException, IOException {
  OAuthRequest request = new OAuthRequest(Verb.PUT, endpoint);
  request.addHeader("Content-Length", contentLength);
  request.addHeader("Content-Type", fileType);
  if (addContentRange) {
    request.addHeader("Content-Range", contentRangeHeaderPrefix + contentRange);
  }
  request.addPayload(fileBytes);
  Response response = signAndSendToVimeo(request, "sendVideo on " + videoTitle, false);
  if (response.getCode() != 200 && !response.isSuccessful()) {
    return -1;
  }
  return verifyUpload(endpoint);
}

/**
* Verifies the upload and returns whether it's successful
*
* @param endpoint to verify upload to
* @return the last byte on the server
*/
public static int verifyUpload(String endpoint) {
  // Verify the upload
  OAuthRequest request = new OAuthRequest(Verb.PUT, endpoint);
  request.addHeader("Content-Length", "0");
  request.addHeader("Content-Range", "bytes */*");
  Response response = signAndSendToVimeo(request, "verifyUpload to " + endpoint, true);
  if (response.getCode() != 308 || !response.isSuccessful()) {
    return -1;
  }
  String range = response.getHeader("Range");
  //range = "bytes=0-10485759"
  return Integer.parseInt(range.substring(range.lastIndexOf("-") + 1)) + 1;
  //The + 1 at the end is because Vimeo gives you 0-whatever byte where 0 = the first byte
}

这是 signAndSendToVimeo 方法:

/**
* Signs the request and sends it. Returns the response.
*
* @param service
* @param accessToken
* @param request
* @return response
*/
public static Response signAndSendToVimeo(OAuthRequest request, String description, boolean printBody) throws org.scribe.exceptions.OAuthException {
  System.out.println(newline + newline
          + "Signing " + description + " request:"
          + ((printBody && !request.getBodyContents().isEmpty()) ? newline + "\tBody Contents:" + request.getBodyContents() : "")
          + ((!request.getHeaders().isEmpty()) ? newline + "\tHeaders: " + request.getHeaders() : ""));
  service.signRequest(accessToken, request);
  printRequest(request, description);
  Response response = request.send();
  printResponse(response, description, printBody);
  return response;
}

这是 一些 (一个例子...所有的输出都可以在 here 中找到)来自 printRequest 和 printResponse 方法的输出: 注意 此输出根据 contentRangeHeaderPrefix 的内容而变化设置为和 first boolean 设置为(指定是否在第一个块上包含 Content-Range header )。

We're sending the video for upload!


Bytes Left: 15125120


Signing sendVideo on Test video request:
    Headers: {Content-Length=15125120, Content-Type=video/mp4, Content-Range=bytes%200-10485759/15125120}

sendVideo on Test video >>> Request
Headers: {Authorization=OAuth oauth_signature="zUdkaaoJyvz%2Bt6zoMvAFvX0DRkc%3D", oauth_version="1.0", oauth_nonce="340477132", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="5cb447d1fc4c3308e2c6531e45bcadf1", oauth_token="460633205c55d3f1806bcab04174ae09", oauth_timestamp="1334336004", Content-Length=15125120, Content-Type=video/mp4, Content-Range=bytes: 0-10485759/15125120}
Verb: PUT
Complete URL: http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d

sendVideo on Test video >>> Response
Code: 200
Headers: {null=HTTP/1.1 200 OK, Content-Length=0, Connection=close, Content-Type=text/plain, Server=Vimeo/1.0}


Signing verifyUpload to http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d request:
    Headers: {Content-Length=0, Content-Range=bytes */*}

verifyUpload to http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d >>> Request
Headers: {Authorization=OAuth oauth_signature="FQg8HJe84nrUTdyvMJGM37dpNpI%3D", oauth_version="1.0", oauth_nonce="298157825", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="5cb447d1fc4c3308e2c6531e45bcadf1", oauth_token="460633205c55d3f1806bcab04174ae09", oauth_timestamp="1334336015", Content-Length=0, Content-Range=bytes */*}
Verb: PUT
Complete URL: http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d

verifyUpload to http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d >>> Response
Code: 308
Headers: {null=HTTP/1.1 308 Resume Incomplete, Range=bytes=0-10485759, Content-Length=0, Connection=close, Content-Type=text/plain, Server=Vimeo/1.0}
Body: 


Bytes Left: 4639360


Signing sendVideo on Test video request:
    Headers: {Content-Length=15125120, Content-Type=video/mp4, Content-Range=bytes: 10485760-15125119/15125120}

sendVideo on Test video >>> Request
Headers: {Authorization=OAuth oauth_signature="qspQBu42HVhQ7sDpzKGeu3%2Bn8tM%3D", oauth_version="1.0", oauth_nonce="183131870", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="5cb447d1fc4c3308e2c6531e45bcadf1", oauth_token="460633205c55d3f1806bcab04174ae09", oauth_timestamp="1334336015", Content-Length=15125120, Content-Type=video/mp4, Content-Range=bytes%2010485760-15125119/15125120}
Verb: PUT
Complete URL: http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d

sendVideo on Test video >>> Response
Code: 200
Headers: {null=HTTP/1.1 200 OK, Content-Length=0, Connection=close, Content-Type=text/plain, Server=Vimeo/1.0}


Signing verifyUpload to http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d request:
    Headers: {Content-Length=0, Content-Range=bytes */*}

verifyUpload to http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d >>> Request
Headers: {Authorization=OAuth oauth_signature="IdhhhBryzCa5eYqSPKAQfnVFpIg%3D", oauth_version="1.0", oauth_nonce="442087608", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="5cb447d1fc4c3308e2c6531e45bcadf1", oauth_token="460633205c55d3f1806bcab04174ae09", oauth_timestamp="1334336020", Content-Length=0, Content-Range=bytes */*}
Verb: PUT
Complete URL: http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d

4639359 != 15125120
verifyUpload to http://174.129.125.96:8080/upload?ticket_id=5ea64d64547e38e5e3c121852b2d306d >>> Response
Success is not true!
Code: 308
Headers: {null=HTTP/1.1 308 Resume Incomplete, Range=bytes=0-4639359, Content-Length=0, Connection=close, Content-Type=text/plain, Server=Vimeo/1.0}
Body: 

然后代码继续完成上传和设置视频信息(您可以在 my full code 中看到)。

编辑 2:尝试从内容范围中删除“%20”并在连接时收到此错误。我必须使用“bytes%20”或根本不添加“bytes”...

Exception in thread "main" org.scribe.exceptions.OAuthException: Problems while creating connection.
    at org.scribe.model.Request.send(Request.java:70)
    at org.scribe.model.OAuthRequest.send(OAuthRequest.java:12)
    at autouploadermodel.VimeoTest.signAndSendToVimeo(VimeoTest.java:282)
    at autouploadermodel.VimeoTest.sendVideoBytes(VimeoTest.java:130)
    at autouploadermodel.VimeoTest.sendVideo(VimeoTest.java:105)
    at autouploadermodel.VimeoTest.main(VimeoTest.java:62)
Caused by: java.io.IOException: Error writing to server
    at sun.net.www.protocol.http.HttpURLConnection.writeRequests(HttpURLConnection.java:622)
    at sun.net.www.protocol.http.HttpURLConnection.writeRequests(HttpURLConnection.java:634)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1317)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
    at org.scribe.model.Response.<init>(Response.java:28)
    at org.scribe.model.Request.doSend(Request.java:110)
    at org.scribe.model.Request.send(Request.java:62)
    ... 5 more
Java Result: 1

编辑 1:更新了代码和输出。还是需要帮助!

Answer 1

我认为您的问题可能只是这一行的结果:

request.addHeader("Content-Range", "bytes%20" + contentRange);

尝试更换 "bytes%20"通过简单 "bytes "
在您的输出中，您会看到相应的标题内容不正确:

Headers: {
    Content-Length=15125120,
    Content-Type=video/mp4,
    Content-Range=bytes%200-10485759/15125120     <-- INCORRECT
}

关于 Content-Range的话题...

您是对的，一个示例最终内容块应该具有类似 14680064-15125119/15125120 的范围。 .这是 HTTP 1.1 规范的一部分。