删除文件

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;
}