Autodesk Forge:文件上传可恢复始终返回202，即使是最后一块

Question

我正在尝试使用端点bucket/：bucketKey/objects/：objectName/resumable上传文件我总是得到响应代码202，即使是对于最后的块。根据文档，我应该会收到回复200，其中包含一些骨灰盒的详细信息，以便最终上传。如何解决这个问题？为了测试，我使用了17MB的文件。但我的主要议程是上传更大的文件。以下是我的代码：

byte[] bytes = uploadObjectRequest.getInputStream().readAllBytes();
int fileSize = bytes.length;    

System.out.println("File size in bytes: "+ fileSize);
int chunkSize = 5 * 1024 * 1024 ;
int nbChunks = (fileSize / chunkSize) + 1;
try(ByteArrayInputStream isReader = new ByteArrayInputStream(bytes)){
for(int i = 0; i < nbChunks; i++){
int start = i * chunkSize;
int end = Math.min(fileSize, (i + 1) * chunkSize) - 1;
String range = "bytes " + start + "-" + end + "/" + fileSize;
// length of this piece
int contentLength = end - start + 1; 
byte[] buffer = new byte[contentLength];

int count = isReader.read(buffer, 0, contentLength);
ByteArrayInputStream is = new ByteArrayInputStream(buffer);
uploadObjectRequest.setContentLength(contentLength);
uploadObjectRequest.setContentRange(range);
String sessionId = UUID.randomUUID().toString();
uploadObjectRequest.setSessionId(sessionId);
uploadObjectRequest.setInputStream(is);
System.out.println(String.format("For Chunk %s contentLength %s, contentRange %s, sessionId %s", i, contentLength, range, sessionId));
HttpResponse res = datamanagementAPI.uploadObjsInChunk(uploadObjectRequest, authenticator);
int status = res.getStatusLine().getStatusCode();
}
}

Answer 1

我在Node.js中发布了一个例子。回到你的代码，你需要这样修改：

string sessionId = UUID.randomUUID().toString()
byte[] bytes = uploadObjectRequest.getInputStream().readAllBytes();
int fileSize = bytes.length;    

System.out.println("File size in bytes: "+ fileSize);
int chunkSize = 5 * 1024 * 1024 ;
if ( fileSize < chunkSize ) {
// Do a standard upload since OSS will reject any chunk less than 2Mb
// At the same time, using the chunk approach for small files has a cost.
// So let's say 5Mb is our limit.
...
return;
}
int nbChunks = (int) Math.floor(fileSize / chunkSize);
if ((fileSize % chunkSize) != 0)
nbChunks++;
try(ByteArrayInputStream isReader = new ByteArrayInputStream(bytes)){
for(int i = 0; i < nbChunks; i++){
int start = i * chunkSize;
int end = start + chunkSize - 1;
if (end > fileSize - 1)
end = fileSize - 1;
String range = "bytes " + start + "-" + end + "/" + fileSize;
// length of this piece
int contentLength = end - start + 1; 
byte[] buffer = new byte[contentLength];

int count = isReader.read(buffer, 0, contentLength);
ByteArrayInputStream is = new ByteArrayInputStream(buffer);
uploadObjectRequest.setContentLength(contentLength);
uploadObjectRequest.setContentRange(range);
String sessionId = sessionId;
uploadObjectRequest.setSessionId(sessionId);
uploadObjectRequest.setInputStream(is);
System.out.println(String.format("For Chunk %s contentLength %s, contentRange %s, sessionId %s", i, contentLength, range, sessionId));
HttpResponse res = datamanagementAPI.uploadObjsInChunk(uploadObjectRequest, authenticator);
int status = res.getStatusLine().getStatusCode();
}
}

谈话结束后，请注意sessionId对于所有区块上传都应该是相同的。否则，OSS无法将所有区块组合在一起。