我正在编写一个代码,用于使用块将大文件上传到blob中...当我测试它时,它给了我一个StorageClientException
它声明:其中一个请求输入超出范围。
我在这行代码中得到了异常:
blob.PutBlock(block, ms, null);
这是我的代码:
protected void ButUploadBlocks_click(object sender, EventArgs e)
{
// store upladed file as a blob storage
if (uplFileUpload.HasFile)
{
name = uplFileUpload.FileName;
byte[] byteArray = uplFileUpload.FileBytes;
Int64 contentLength = byteArray.Length;
int numBytesPerBlock = 250 *1024; // 250KB per block
int blocksCount = (int)Math.Ceiling((double)contentLength / numBytesPerBlock); // number of blocks
MemoryStream ms ;
List<string>BlockIds = new List<string>();
string block;
int offset = 0;
// get refernce to the cloud blob container
CloudBlobContainer blobContainer = cloudBlobClient.GetContainerReference("documents");
// set the name for the uploading files
string UploadDocName = name;
// get the blob reference and set the metadata properties
CloudBlockBlob blob = blobContainer.GetBlockBlobReference(UploadDocName);
blob.Properties.ContentType = uplFileUpload.PostedFile.ContentType;
for (int i = 0; i < blocksCount; i++, offset = offset + numBytesPerBlock)
{
block = Convert.ToBase64String(BitConverter.GetBytes(i));
ms = new MemoryStream();
ms.Write(byteArray, offset, numBytesPerBlock);
blob.PutBlock(block, ms, null);
BlockIds.Add(block);
}
blob.PutBlockList(BlockIds);
blob.Metadata["FILETYPE"] = "text";
}
}
谁能告诉我如何解决它......
答案 0 :(得分:2)
我认为你必须做ms.Position = 0才能在上传之前将流恢复到开始状态。 (否则,大概PutBlock会尝试从流中读取并在最后找到它。)