存储空间_C++_SDK 示例_对象存储 OSS-阿里云

创建存储空间

以下代码用于创建存储空间：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 指定新创建bucket的名称、存储级别和ACL */
    CreateBucketRequest request(BucketName, StorageClass::IA, CannedAccessControlList::PublicReadWrite);

    /* 创建bucket */
    auto outcome = client.CreateBucket(request);

    if (!outcome.isucces()) {
        /* 异常处理 */
        std::cout << "CreateBucket 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;
}

存储空间的命名规范，请参见存储空间（Bucket）。

您可以在创建存储空间时指定存储空间的权限和存储类型。

列举存储空间

以下代码用于列举所有的存储空间：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 列举存储空间 */
    ListBucketsRequest request;
    auto outcome = client.ListBuckets(request);

    if (outcome.isSuccess()) {
        /* 打印存储空间信息 */
        std::cout <<" success, and bucket count is" << outcome.result().Buckets().size() << std::endl;
        std::cout << "Bucket name is" << std::endl;
        for (auto result : outcome.result().Buckets())
        {
            std::cout << result.Name() << std::endl;
        }
    }
    else {
        /* 异常处理 */
        std::cout << "ListBuckets 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;
}

设置存储空间的访问权限

存储空间的访问权限（ACL）有以下三类：


访问权限	描述	访问权限值
私有	存储空间的拥有者和授权用户有该存储空间内的文件的读写权限，其他用户没有权限操作该存储空间内的文件。	OSS_ACL_PRIVATE
公共读	存储空间的拥有者和授权用户有该存储空间内的文件的读写权限，其他用户只有该存储空间内的文件的读权限。请谨慎使用该权限。	OSS_ACL_PUBLIC_READ
公共读写	所有用户都有该存储空间内的文件的读写权限。请谨慎使用该权限。	OSS_ACL_PUBLIC_READ_WRITE

更多关于访问权限的内容请参见开发指南中的访问控制。

以下代码用于设置存储空间的访问权限：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 设置存储空间访问权限 */
    SetBucketAclRequest request(BucketName, CannedAccessControlList::Private);
    auto outcome = client.SetBucketAcl(request);

    if (outcome.isSuccess()) {    
        std::cout << " setBucketAcl to private success " << std::endl;
    }
    else {
        /* 异常处理 */
        std::cout << "SetBucketAcl 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;
}

获取存储空间的访问权限

以下代码用于获取存储空间的访问权限：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 获取存储空间访问权限 */
    GetBucketAclRequest request(BucketName);
    auto outcome = client.GetBucketAcl(request);

    if (outcome.isSuccess()) {    
        std::cout << "getBucketAcl success, acl: " << outcome.result().Acl() << std::endl;
    }
    else {
        /* 异常处理 */
        std::cout << "getBucketAcl 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;
}

获取存储空间的地域

以下代码用于获取存储空间的地域（称为Region或Location）：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 获取存储空间地域 */
    GetBucketLocationRequest request(BucketName);
    auto outcome = client.GetBucketLocation(request);

    if (outcome.isSuccess()) {    
        std::cout << "getBucketLocation success, location: " << outcome.result().Location() << std::endl;
    }
    else {
        /* 异常处理 */
        std::cout << "getBucketLocation 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；
}

判断存储空间是否存在

以下代码用于判断存储空间是否存在：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 判断存储空间是否存在 */
    auto outcome = client.DoesBucketExist(BucketName);

    if (outcome) {    
        std::cout << " The Bucket exists" << std::endl;
    }
    else {
        std::cout << "The Bucket does not exist" << std::endl;
    }

    /* 释放网络等资源 */
    ShutdownSdk();
    return 0;
}

删除存储空间

删除存储空间之前，必须先删除存储空间下的所有文件、LiveChannel和分片上传产生的碎片。

说明要删除分片上传产生的碎片，首先使用Bucket.ListMultipartUploads列举出所有碎片，然后使用Bucket.AbortMultipartUpload删除这些碎片。

以下代码用于删除存储空间：

#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";

    /* 初始化网络等资源 */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* 指定要删除的bucket名称 */
    DeleteBucketRequest request(BucketName);

    /* 删除bucket */
    auto outcome = client.DeleteBucket(request);

    if (!outcome.isSuccess()) {
        /* 异常处理 */
        std::cout << "DeleteBucket 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；
}