public void Get(string remotename, Stream stream)
{
try
{
cosXml = GetCosXml();
string bucket = _cosOptions.Bucket;
string key = GetFullKey(remotename);
GetObjectBytesRequest request = new GetObjectBytesRequest(bucket, key);
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), KEY_DURATION_SECOND);
GetObjectBytesResult result = cosXml.GetObject(request);
byte[] bytes = result.content;
Stream ms = new MemoryStream(bytes);
Utility.Utility.CopyStream(ms, stream);
}
catch (COSXML.CosException.CosClientException clientEx)
{
Logging.Log.WriteErrorMessage(LOGTAG, "Get", clientEx, "Get failed: {0}", remotename);
throw;
}
catch (COSXML.CosException.CosServerException serverEx)
{
Logging.Log.WriteErrorMessage(LOGTAG, "Get", serverEx, "Get failed: {0}, {1}", remotename, serverEx.GetInfo());
throw;
}
}
/// 下载返回 bytes 数据
public void downloadToMem()
{
try
{
string bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
string key = "exampleobject"; //对象键
GetObjectBytesRequest request = new GetObjectBytesRequest(bucket, key);
//设置进度回调
request.SetCosProgressCallback(delegate(long completed, long total)
{
Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
});
//执行请求
GetObjectBytesResult result = cosXml.GetObject(request);
//获取内容
byte[] content = result.content;
//请求成功
Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
//请求失败
Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
//请求失败
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
}
/// <summary>
///
/// </summary>
/// <param name="bucket"></param>
/// <param name="key"></param>
/// <returns></returns>
public byte[] Get(string bucket, string key)
{
try
{
GetObjectBytesRequest request = new GetObjectBytesRequest(bucket, key);
//设置进度回调
//执行请求
GetObjectBytesResult result = cosXml.GetObject(request);
//获取内容
byte[] content = result.content;
//请求成功
return(content);
}
catch (COSXML.CosException.CosClientException clientEx)
{
//请求失败
Console.WriteLine("CosClientException:======================= " + clientEx);
Debug.WriteLine("CosClientException:======================= " + clientEx);
return(new byte[] { });
}
catch (COSXML.CosException.CosServerException serverEx)
{
//请求失败
Console.WriteLine("CosServerException:======================= " + serverEx.GetInfo());
Debug.WriteLine("CosServerException:======================= " + serverEx.GetInfo());
return(new byte[] { });
}
}
public void testGetObjectByte()
{
try
{
HeadObjectRequest request = new HeadObjectRequest(bucket, commonKey);
//执行请求
HeadObjectResult result = cosXml.HeadObject(request);
long contentLength = Int64.Parse(result.responseHeaders["Content-Length"][0]);
GetObjectBytesRequest getObjectBytesRequest = new GetObjectBytesRequest(bucket, commonKey);
getObjectBytesRequest.SetCosProgressCallback(delegate(long completed, long total)
{
Console.WriteLine(String.Format("{0} progress = {1} / {2} : {3:##.##}%", DateTime.Now.ToString(), completed, total, completed * 100.0 / total));
});
GetObjectBytesResult getObjectBytesResult = cosXml.GetObject(getObjectBytesRequest);
byte[] content = getObjectBytesResult.content;
Assert.AreEqual(content.Length, contentLength);
}
catch (COSXML.CosException.CosClientException clientEx)
{
Console.WriteLine("CosClientException: " + clientEx);
Assert.True(false);
}
catch (COSXML.CosException.CosServerException serverEx)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
Assert.True(false);
}
}
public async Task GetObjectAsync(string bucketName, string objectName, Action <Stream> callback, CancellationToken cancellationToken = default)
{
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentNullException(nameof(bucketName));
}
if (string.IsNullOrEmpty(objectName))
{
throw new ArgumentNullException(nameof(objectName));
}
if (!await ObjectsExistsAsync(bucketName, objectName))
{
throw new Exception($"Object '{objectName}' not in bucket '{bucketName}'");
}
bucketName = ConvertBucketName(bucketName);
await Task.Run(() =>
{
GetObjectBytesRequest request = new GetObjectBytesRequest(bucketName, objectName);
//执行请求
GetObjectBytesResult result = _client.GetObject(request);
//获取内容
byte[] content = result.content;
if (content != null && content.Length > 0)
{
MemoryStream ms = new MemoryStream(content);
callback(ms);
}
else
{
throw new Exception("Get object bytes is null.");
}
}, cancellationToken);
}
