本文介绍如何删除单个文件、多个文件以及指定前缀的文件(Object)。
警告 请您谨慎使用删除操作,文件一旦删除将无法恢复。
删除单个文件
以下代码用于删除单个文件:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
int main(void)
{
/* 初始化OSS账号信息 */
std::string AccessKeyId = "yourAccessKeyId";
std::string AccessKeySecret = "yourAccessKeySecret";
std::string Endpoint = "yourEndpoint";
std::string BucketName = "yourBucketName";
std::string ObjectName = "yourObjectName";
/* 初始化网络等资源 */
InitializeSdk();
ClientConfiguration conf;
OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);
/* ObjectName表示删除OSS文件时需要指定包含文件后缀在内的完整路径,例如abc/efg/123.jpg */
/* 如需删除文件夹,请将ObjectName设置为对应的文件夹名称。如果文件夹非空,则需要将文件夹下的所有object删除后才能删除该文件夹 */
DeleteObjectRequest request(BucketName, ObjectName);
/* 删除文件 */
auto outcome = client.DeleteObject(request);
if (!outcome.isSuccess()) {
/* 异常处理 */
std::cout << "DeleteObject 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;
}
删除多个文件
每次最多删除1000个文件。有两种返回模式:
- 详细(verbose)模式:返回删除成功的文件列表。默认为详细模式。
- 简单(quiet)模式:返回删除失败的文件列表。
以下代码用于批量删除文件:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
int main(void)
{
/*初始化OSS账号信息*/
std::string AccessKeyId = "yourAccessKeyId";
std::string AccessKeySecret = "yourAccessKeySecret";
std::string Endpoint = "yourEndpoint";
std::string BucketName = "yourBucketName";
std::string ObjectName = "yourObjectName";
/* 初始化网络等资源 */
InitializeSdk();
ClientConfiguration conf;
OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);
DeleteObjectsRequest request(BucketName);
/* 添加要删除文件的文件名 */
request.addKey(ObjectName);
/* 删除文件 */
auto outcome = client.DeleteObjects(request);
if (!outcome.isSuccess()) {
/* 异常处理 */
std::cout << "DeleteObjects 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;
}
删除指定前缀的文件
以下代码用于删除指定前缀(prefix)的文件:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
int main(void)
{
/*初始化OSS账号信息*/
std::string AccessKeyId = "yourAccessKeyId";
std::string AccessKeySecret = "yourAccessKeySecret";
std::string Endpoint = "yourEndpoint";
std::string BucketName = "yourBucketName";
std::string keyPrefix = "yourkeyPrefix";
/*初始化网络等资源*/
InitializeSdk();
ClientConfiguration conf;
OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);
std::string nextMarker = "";
do {
/*列举文件*/
ListObjectsRequest request(BucketName);
/*指定前缀*/
request.setPrefix(keyPrefix);
request.setMarker(nextMarker);
auto outcome = client.ListObjects(request);
if (!outcome.isSuccess()) {
/*异常处理*/
std::cout << "ListObjects fail" <<
",code:" << outcome.error().Code() <<
",message:" << outcome.error().Message() <<
",requestId:" << outcome.error().RequestId() << std::endl;
break;
}
for (const auto& object : outcome.result().ObjectSummarys()) {
DeleteObjectRequest request(BucketName, object.Key());
/* 删除文件 */
auto delResult = client.DeleteObject(request);
}
nextMarker = outcome.result().NextMarker();
} while (outcome.result().IsTruncated());
/*释放网络等资源*/
ShutdownSdk();
return 0;
}