我正在尝试将大文件分块上传到第三部分服务。但我对最后一块有问题。最后一个块总是小于 5mb,但所有块都包括。最后一个大小相同 - 5mb
我的代码:
int chunkSize = 1024 * 1024 * 5;
using (Stream streamx = new FileStream(file.Path, FileMode.Open, FileAccess.Read))
{
byte[] buffer = new byte[chunkSize];
int bytesRead = 0;
long bytesToRead = streamx.Length;
while (bytesToRead > 0)
{
int n = streamx.Read(buffer, 0, chunkSize);
if (n == 0) break;
// do work on buffer...
// uploading chunk ....
var partRequest = HttpHelpers.InvokeHttpRequestStream
(
new Uri(endpointUri + "?partNumber=" + i + "&uploadId=" + UploadId),
"PUT",
partHeaders,
buffer
); // upload buffer
bytesRead += n;
bytesToRead -= n;
}
streamx.Dispose();
}
缓冲区上传到第 3 方服务。
解决了,有人在评论中发布了更新的代码,但几秒钟后删除了此评论。但有解决办法。我在之后添加了这部分
if (n == 0)
此代码将最后一个块的大小调整为正确的大小
// Let's resize the last incomplete buffer
if (n != buffer.Length)
Array.Resize(ref buffer, n);
谢谢你们。
我发布完整的工作代码:
int chunkSize = 1024 * 1024 * 5;
using (Stream streamx = new FileStream(file.Path, FileMode.Open, FileAccess.Read))
{
byte[] buffer = new byte[chunkSize];
int bytesRead = 0;
long bytesToRead = streamx.Length;
while (bytesToRead > 0)
{
int n = streamx.Read(buffer, 0, chunkSize);
if (n == 0) break;
// Let's resize the last incomplete buffer
if (n != buffer.Length)
Array.Resize(ref buffer, n);
// do work on buffer...
// uploading chunk ....
var partRequest = HttpHelpers.InvokeHttpRequestStream
(
new Uri(endpointUri + "?partNumber=" + i + "&uploadId=" + UploadId),
"PUT",
partHeaders,
buffer
); // upload buffer
bytesRead += n;
bytesToRead -= n;
}
}
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