public PutObjectResult PutObejct(AliyunUploadRequest uploadRequest)
{
var fileHash = NAppUpdate.Framework.Utils.FileChecksum.GetSHA256Checksum(uploadRequest.file);
//网上的文件是正确的了，不上传了，相当于文件级别的断点续传
if (GetObjectEtag(uploadRequest.bucketName, uploadRequest.key).ToUpper()
== fileHash)
{
return null;
}
PutObjectResult ret = null;
using (FileStream fs = new FileStream(uploadRequest.file, FileMode.Open))
{
AliyunStream stream = new AliyunStream(fs);
stream.ReadPositionChangeEvent += delegate(long nowPosition, long totalBytes)
{
uploadRequest.TransferFile(nowPosition, totalBytes);
};
ret = _ossClient.PutObject
(
uploadRequest.bucketName, uploadRequest.key, stream,
new ObjectMetadata()
{
ContentLength = fs.Length,
ETag = fileHash, //ETag记录SHA256值，用于短点续传的判断
}
);
}
return ret;
}
public ObjectMetadata GetObject(AliyunDownloadRequst downloadRequst)
{
ObjectMetadata ret = null;
using (FileStream fs = new FileStream(downloadRequst.file, FileMode.Create))
{
long totalBytes = GetObjectSize(downloadRequst.bucketName, downloadRequst.key);
AliyunStream stream = new AliyunStream(fs);
stream.WritePositionChangeEvent += delegate(long nowPosition, long _totalBytes)
{
downloadRequst.TransferFile(nowPosition, totalBytes);
};
GetObjectRequest getObjectRequest = new GetObjectRequest(downloadRequst.bucketName, downloadRequst.key);
ret = _ossClient.GetObject(getObjectRequest, stream);
}
return ret;
}