public static void Download(string bucket, string key, string localDir, string localFileName)
{
COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(bucket, null, key, localDir, localFileName)
{
progressCallback = delegate(long completed, long total)
{
Console.WriteLine(String.Format("progress = {0} / {1} : {2:##.##}%", completed, total, completed * 100.0 / total));
},
successCallback = delegate(CosResult cosResult)
{
COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult result = cosResult as COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult;
QLog.D("XIAO", result.GetResultInfo());
Console.WriteLine(result.GetResultInfo());
Console.WriteLine(String.Format("currentThread id = {0}", Thread.CurrentThread.ManagedThreadId));
},
failCallback = delegate(CosClientException clientEx, CosServerException serverEx)
{
if (clientEx != null)
{
QLog.D("XIAO", clientEx.Message);
Console.WriteLine("CosClientException: " + clientEx.StackTrace);
}
if (serverEx != null)
{
QLog.D("XIAO", serverEx.Message);
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
Console.WriteLine(String.Format("currentThread id = {0}", Thread.CurrentThread.ManagedThreadId));
}
};
transferManager.Download(downloadTask);
}
public void testDownloadTask()
{
long now = new DateTimeOffset(DateTime.UtcNow).ToUnixTimeMilliseconds();
GetObjectRequest request = new GetObjectRequest(bucket,
commonKey, localDir, localFileName);
request.LimitTraffic(8 * 1000 * 1024);
//执行请求
COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(request);
var autoEvent = new AutoResetEvent(false);
downloadTask.progressCallback = delegate(long completed, long total)
{
Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
};
downloadTask.successCallback = delegate(CosResult cosResult)
{
COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult result = cosResult as COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult;
Console.WriteLine(result.GetResultInfo());
autoEvent.Set();
Assert.True(cosResult.httpCode == 200);
};
downloadTask.failCallback = delegate(CosClientException clientEx, CosServerException serverEx)
{
if (clientEx != null)
{
Console.WriteLine("CosClientException: " + clientEx);
}
if (serverEx != null)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
autoEvent.Set();
Assert.True(false);
};
long costTime = new DateTimeOffset(DateTime.UtcNow).ToUnixTimeMilliseconds() - now;
transferManager.Download(downloadTask);
autoEvent.WaitOne();
}
/// 高级接口下载对象
public void TransferDownloadObject()
{
//.cssg-snippet-body-start:[transfer-download-object]
// 初始化 TransferConfig
TransferConfig transferConfig = new TransferConfig();
// 初始化 TransferManager
TransferManager transferManager = new TransferManager(cosXml, transferConfig);
String bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
String cosPath = "exampleobject"; //对象在存储桶中的位置标识符，即称对象键
string localDir = System.IO.Path.GetTempPath(); //本地文件夹
string localFileName = "my-local-temp-file"; //指定本地保存的文件名
// 下载对象
COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(bucket, cosPath,
localDir, localFileName);
downloadTask.progressCallback = delegate(long completed, long total)
{
Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
};
downloadTask.successCallback = delegate(CosResult cosResult)
{
COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult result = cosResult
as COSXML.Transfer.COSXMLDownloadTask.DownloadTaskResult;
Console.WriteLine(result.GetResultInfo());
string eTag = result.eTag;
};
downloadTask.failCallback = delegate(CosClientException clientEx, CosServerException serverEx)
{
if (clientEx != null)
{
Console.WriteLine("CosClientException: " + clientEx);
}
if (serverEx != null)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
};
transferManager.Download(downloadTask);
//.cssg-snippet-body-end
}
/// 批量下载
public void TransferBatchDownloadObjects()
{
//.cssg-snippet-body-start:[transfer-batch-download-objects]
TransferConfig transferConfig = new TransferConfig();
// 初始化 TransferManager
TransferManager transferManager = new TransferManager(cosXml, transferConfig);
string bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
string localDir = System.IO.Path.GetTempPath(); //本地文件夹
for (int i = 0; i < 5; i++)
{
// 下载对象
string cosPath = "exampleobject" + i; //对象在存储桶中的位置标识符，即称对象键
string localFileName = "my-local-temp-file"; //指定本地保存的文件名
COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(bucket, cosPath,
localDir, localFileName);
transferManager.Download(downloadTask);
}
//.cssg-snippet-body-end
}
/// 下载时对单链接限速
public void DownloadObjectTrafficLimit()
{
//.cssg-snippet-body-start:[download-object-traffic-limit]
TransferConfig transferConfig = new TransferConfig();
// 初始化 TransferManager
TransferManager transferManager = new TransferManager(cosXml, transferConfig);
String bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
String cosPath = "exampleobject"; //对象在存储桶中的位置标识符，即称对象键
string localDir = System.IO.Path.GetTempPath(); //本地文件夹
string localFileName = "my-local-temp-file"; //指定本地保存的文件名
GetObjectRequest request = new GetObjectRequest(bucket,
cosPath, localDir, localFileName);
request.LimitTraffic(8 * 1000 * 1024); // 限制为1MB/s
COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(request);
transferManager.Download(downloadTask);
//.cssg-snippet-body-end
}
public void Run()
{
FileRequest fileRequest = new FileRequest();
int status = fileRequest.Download(File.Id, out FileListResponse res);
switch (status)
{
case -20000:
TaskStatusDetectionThread.Abort();
DownloadTaskList.SetFailure(File.Key, "请求服务器失败，请稍后再试。");
break;
case -20001:
TaskStatusDetectionThread.Abort();
DownloadTaskList.SetFailure(File.Key, "请求下载的文件不存在。");
break;
case -10000:
TaskStatusDetectionThread.Abort();
DownloadTaskList.SetFailure(File.Key, res.message);
break;
case 0:
{
string bucket = res.data.tencentCos.bucket; //存储桶，格式：BucketName-APPID
string cosPath = res.data.files[0].storageName; //对象在存储桶中的位置标识符，即称对象键
string localDir = File.LocalPath; //本地文件夹
string localFileName = File.FileName; //指定本地保存的文件名
CosService cosService = new CosService(res.data.tencentCos.region);
CosXml cosXml = cosService.getCosXml(res.data.token.credentials.tmpSecretId, res.data.token.credentials.tmpSecretKey, res.data.token.credentials.token, res.data.token.expiredTime);
TransferConfig transferConfig = new TransferConfig();
TransferManager transferManager = new TransferManager(cosXml, transferConfig);
downloadTask = new COSXMLDownloadTask(bucket, cosPath, localDir, localFileName);
downloadTask.progressCallback = delegate(long completed, long total)
{
DownloadTaskList.SetProgress(File.Key, completed, total);
Console.WriteLine(String.Format("progress = {0:##.##}%", completed * 100.0 / total));
};
downloadTask.successCallback = delegate(CosResult cosResult)
{
TaskStatusDetectionThread.Abort();
COSXMLDownloadTask.DownloadTaskResult result = cosResult as COSXMLDownloadTask.DownloadTaskResult;
Console.WriteLine("successCallback: " + result.GetResultInfo());
string eTag = result.eTag;
DownloadTaskList.SetSuccess(File.Key);
};
downloadTask.failCallback = delegate(CosClientException clientEx, CosServerException serverEx)
{
if (clientEx != null)
{
Console.WriteLine("CosClientException: " + clientEx);
}
if (serverEx != null)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
TaskStatusDetectionThread.Abort();
DownloadTaskList.SetFailure(File.Key, "COS下载出错。");
};
transferManager.Download(downloadTask);
}
break;
default:
TaskStatusDetectionThread.Abort();
DownloadTaskList.SetFailure(File.Key, "未知原因下载失败。");
break;
}
}
