进度条用于指示上传或下载的进度。
示例代码
以下代码展示如何使用进度条:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
void ProgressCallback(size_t increment, int64_t transfered, int64_t total, void* userData)
{
std::cout << "ProgressCallback[" << userData << "] => " <<
increment <<" ," << transfered << "," << total << std::endl;
}
int main(void )
{
/* 初始化OSS账号信息。*/
/* 阿里云账号AccessKey拥有所有API的访问权限,风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维,请登录RAM控制台创建RAM用户。*/
std::string AccessKeyId = "yourAccessKeyId";
std::string AccessKeySecret = "yourAccessKeySecret";
/* 填写Bucket所在地域对应的Endpoint。以华东1(杭州)为例,Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
std::string Endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
/* 填写Bucket名称,例如examplebucket。*/
std::string BucketName = "examplebucket";
/* 填写Object完整路径,完整路径中不能包含Bucket名称,例如exampledir/exampleobject.txt。*/
std::string ObjectName = "exampledir/exampleobject.txt";
/* 初始化网络等资源。*/
InitializeSdk();
ClientConfiguration conf;
OssClient client(Endpoint, AccessKeyId, AccessKeyS ecre t, conf);
/* 获取文件。*/
GetObjectRequest request(BucketName, ObjectName);
TransferProgress progressCallback = { ProgressCallback , nullptr };
request.setTransferProgress(progressCallback);
auto outcome = client.GetObject(request);
if (!outcome.isSuccess()) {
/* 异常处理。*/
std::cout << "getObject fail" <<
",code:" << outcome.error().Code() <<
",message:" << outcome.error().Message() <<
",requestId:" << outcome.error().RequestId() << std::endl;
ShutdownSdk ();
return -1;
}
/* 释放网络等资源。*/
ShutdownSdk();
return 0;
}
相关文档
关于下载文件的进度条使用方法的完整示例代码,请参见GitHub示例。