Windows下Qt使用AWS SDK for C++连接MinIO服务器

Windows下Qt使用AWS SDK for C++连接MinIO服务器

MinIO——分布式对象存储服务器。
它是一个是一个高性能的对象存储服务器，用于构建云存储解决方案，出于工作需求用到了这个MinIO来管理文件。

但，我用的是Qt，c++语言，并且使用环境是windows，可MinIO的C++ SDK只能Linux使用，不支持Windows，如果非要自己编译Windows版本的话估计得踩不少坑，放过自己吧。

最后只能折中于使用AWS SDK for C++，好在MinIO是兼容AWS SDK的？

安装vcpkg

先安装AWS SDK for C++，需要先安装vcpkg：

git clone https://github.com/Microsoft/vcpkg.git
cdvcpkg
./bootstrap-vcpkg.bat

等安装完成后，将vcpkg的环境加入系统环境变量，这样才能在cmd窗口随意使用vcpkg命令。
右键“我的电脑” >> 属性 >> 高级系统设置 >> 环境变量 >> 系统变量>> path
双击“path”把vcpkg的环境加入其中。
添加完成后，一路点击“确定”按钮退出界面。

安装AWS SDK for C++

按下win+R输入cmd回车，打开窗口后，输入以下命令：

vcpkg search aws-sdk-cpp
vcpkginstall aws-sdk-cpp[s3]:x64-windows

这里可能会因为网络问题下载包失败，失败后重来，总会成功的。
等成功安装后，会在vcpkg中看到这样一个路径：D:\Soft\vcpkg\vcpkg\installed\x64-windows
这里面lib、include、bin文件夹中的内容，就是我们需要的。

创建Qt项目

随便创建一个qt项目，在pro文件中加入：

INCLUDEPATH += D:/Soft/vcpkg/vcpkg/installed/x64-windows/include
LIBS +=-LD:/Soft/vcpkg/vcpkg/installed/x64-windows/lib -laws-cpp-sdk-core -laws-c-auth -laws-c-cal -laws-c-common \
-laws-c-compression -laws-c-event-stream -laws-checksums -laws-c-http -laws-c-io \
-laws-cpp-sdk-dynamodb -laws-cpp-sdk-kinesis -laws-cpp-sdk-s3 -laws-crt-cpp

对接MinIO

使用aws-sdk-cpp的接口，连接MinIO服务器，要确保服务器已打开。
完成功能：连接服务器、创建Bucket、列出Buckets的名字、上传文件、下载文件、删除文件、删除Bucket。

#include<QFile>#include<aws/core/Aws.h>#include<aws/s3/S3Client.h>#include<aws/s3/model/GetObjectRequest.h>#include<aws/s3/model/PutObjectRequest.h>#include<aws/s3/model/DeleteObjectRequest.h>#include<aws/s3/model/CreateBucketRequest.h>#include<aws/s3/model/DeleteBucketRequest.h>#include<aws/core/auth/AWSCredentialsProviderChain.h>voidDemoQML::initMinIO(){// 连接服务器
    Aws::SDKOptions options;
    options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Debug;Aws::InitAPI(options);

    Aws::Client::ClientConfiguration cfg;
    cfg.endpointOverride ="127.0.0.1:9000";
    cfg.scheme = Aws::Http::Scheme::HTTP;
    cfg.verifySSL =false;
    Aws::Auth::AWSCredentials cred("hualongxunda","hualongxunda");

    Aws::S3::S3Client client(cred, cfg, Aws::Client::AWSAuthV4Signer::PayloadSigningPolicy::Always,false,
    Aws::S3::US_EAST_1_REGIONAL_ENDPOINT_OPTION::NOT_SET);

    std::string fileName ="2104616062021073019firstpush_00004893_OK.bmp";
    std::string BucketName ="mybucket";// 创建Bucket
    Aws::S3::Model::CreateBucketRequest create_bucket_request;
    create_bucket_request.SetBucket(BucketName);
    create_bucket_request.SetCreateBucketConfiguration({});auto create_bucket_outcome = client.CreateBucket(create_bucket_request);if(create_bucket_outcome.IsSuccess()){qDebug()<<"Bucket created successfully.";}else{qDebug()<<"Failed to create bucket: "<<
                    create_bucket_outcome.GetError().GetMessage().c_str();Aws::ShutdownAPI(options);return;}// 列出Buckets的名字auto response = client.ListBuckets();if(response.IsSuccess()){auto buckets = response.GetResult().GetBuckets();for(auto iter = buckets.begin(); iter != buckets.end();++iter){qDebug()<<"--"<< iter->GetName().c_str()<< iter->GetCreationDate().ToLocalTimeString(Aws::Utils::DateFormat::ISO_8601).c_str();}}// 上传文件
    QFile file(QString::fromStdString(fileName));
    file.open(QIODevice::ReadOnly);
    Aws::S3::Model::PutObjectRequest putObjectRequest;
    putObjectRequest.WithBucket(BucketName.c_str()).WithKey(fileName.c_str());
    std::shared_ptr<Aws::IOStream> input_data = Aws::MakeShared<Aws::StringStream>("PutObjectInputStream");*input_data << file.readAll().toStdString();
    file.close();
    putObjectRequest.SetBody(input_data);auto putObjectResult = client.PutObject(putObjectRequest);if(putObjectResult.IsSuccess()){qDebug()<<"upload file success!";}else{qDebug()<<"upload file error: "<<
                     putObjectResult.GetError().GetExceptionName().c_str()<<" "<<
                     putObjectResult.GetError().GetMessage().c_str();Aws::ShutdownAPI(options);return;}// 下载文件
    Aws::S3::Model::GetObjectRequest object_request;
    object_request.WithBucket(BucketName.c_str()).WithKey(fileName.c_str());auto get_object_outcome = client.GetObject(object_request);if(get_object_outcome.IsSuccess()){
        Aws::IOStream &local_file = get_object_outcome.GetResult().GetBody();if(!local_file){qDebug()<<"Error opening file";Aws::ShutdownAPI(options);return;}
        std::istreambuf_iterator<char>begin(local_file);
        std::istreambuf_iterator<char> end;
        std::string buffer(begin, end);// 读取整个文件内容
        QFile file_(QString::fromStdString("./test/"+fileName));if(file_.open(QIODevice::ReadWrite | QIODevice::Truncate)){
            file_.write(QByteArray::fromStdString(buffer));
            file_.close();}qDebug()<<"download success!";}else{
        std::cout <<"GetObject error: "<<
                     get_object_outcome.GetError().GetExceptionName()<<" "<<
                     get_object_outcome.GetError().GetMessage()<< std::endl;}// 删除文件
    Aws::S3::Model::DeleteObjectRequest delete_object_request;
    delete_object_request.WithBucket(BucketName.c_str()).WithKey(fileName.c_str());auto delete_object_outcome = client.DeleteObject(delete_object_request);if(delete_object_outcome.IsSuccess()){qDebug()<<"File deleted successfully.";}else{qDebug()<<"Failed to delete file: "<<
                    delete_object_outcome.GetError().GetMessage().c_str();}// 删除Bucket，一定要先删除文件，再删除Bucket
    Aws::S3::Model::DeleteBucketRequest delete_bucket_request;
    delete_bucket_request.SetBucket(BucketName.c_str());auto delete_bucket_outcome = client.DeleteBucket(delete_bucket_request);if(delete_bucket_outcome.IsSuccess()){qDebug()<<"Bucket deleted successfully.";}else{qDebug()<<"Failed to delete bucket: "<<
                    delete_bucket_outcome.GetError().GetMessage().c_str();}Aws::ShutdownAPI(options);}

运行

编译release版本后，如果运行失败，可以将D:\Soft\vcpkg\vcpkg\installed\x64-windows\bin 目录下有用到的dll文件，复制到qt程序的exe同级目录下。