int deleteObject(Client& client,const std::string bucketName, const std::string objectKey) {

    // 删除Object
    return client.delete_object(bucketName, objectKey);           //指定要删除的Object所在Bucket名称和该Object名称
}

int deleteMultiObject(Client& client, const& std::string bucketName, const std::vector<std::string>& objects) { 
    //批量删除object
    std::vector<BceRequestContext> ctx(objects.size());
    int i = 0;
    for (const std::string& objectKey : objects) {
        //构造上下文信息
        ctx[i].request = new DeleteObjectRequest(bucketName, objectKey);
        ctx[i].response = new DeleteObjectResponse;
        ctx[i].is_own = true;//自动析构request和response
        ++i;
    }
    //并发请求
    int ret = client.send_request((int)ctx.size(), &ctx.front());
    if (ret != 0) return ret;
    //处理response
    for (size_t i = 0; i < ctx.size(); ++i) {
        DeleteObjectRequest* request = (DeleteObjectRequest*)ctx[i].request;
        DeleteObjectResponse* response = (DeleteObjectResponse*)ctx[i].response;
        if (response->is_fail()) {//有请求删除失败，处理这种情况
            std::cout << "delete objectKey=" << request->object_name() << " failed"
                            << " reason: " << response->error().message();
            ret = RET_SERVICE_ERROR;
        }
    }
    return ret;
}