更新时间:2024-03-14 GMT+08:00
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C++ SDK

本章节介绍新版C++ SDK,您可以参考本章节进行快速集成开发。

准备工作

  • 注册华为账号并开通华为云,并完成实名认证,账号不能处于欠费或冻结状态。
  • 已具备开发环境,支持 C++ 14 及以上版本,要求安装 CMake 3.10 及以上版本。
  • 登录“我的凭证 > 访问秘钥”页面,获取Access Key(AK)和Secret Access Key(SK)。
    图1 获取AK、SK
  • 登录“我的凭证”页面,获取“IAM用户名”“、账号名”以及待使用区域的“项目ID”。调用服务时会用到这些信息,请提前保存。

    本样例以“华北-北京四”区域为例,获取对应的项目ID(project_id)。

    图2 我的凭证

安装SDK

  • 在Linux系统上安装SDK
    1. 获取依赖包

      所需的这些第三方软件包在大部分系统的包管理工具中都有提供,例如基于 Debian/Ubuntu 的系统。

      sudo apt-get install libcurl4-openssl-dev libboost-all-dev libssl-dev libcpprest-dev

      spdlog 需要从源码进行安装。

      git clone https://github.com/gabime/spdlog.git
      cd spdlog
      mkdir build
      cd build
      cmake -DCMAKE_POSITION_INDEPENDENT_CODE=ON ..  // 用以生成动态库
      make
      sudo make install
    2. 编译安装
      git clone https://github.com/huaweicloud/huaweicloud-sdk-cpp-v3.git
      cd huaweicloud-sdk-cpp-v3
      mkdir build
      cd build
      cmake ..
      make
      sudo make install

      完成上述操作后,C++ SDK 安装目录为 /usr/local。

  • 在Windows系统上安装SDK
    1. 安装 vcpkg 并使用 vcpkg 安装所需软件包
      vcpkg install curl cpprestsdk boost openssl spdlog
    2. 使用CLion进行编译
      1. 使用CLion打开huaweicloud-sdk-cpp-v3 目录。
      2. 选择File > Settings
      3. 选择Build, Execution, Deployment > > CMake
      4. 在CMake options中加入:
        -DCMAKE_TOOLCHAIN_FILE={your vcpkg install dir}/scripts/buildsystems/vcpkg.cmake
      5. 右键 CMakeLists.txt 选择 Load CMake Project。
      6. 选择Build开始编译。
    3. 安装C++ SDK

      编译完成后选择Build > Install

      完成上述操作后,C++ SDK 安装目录为 C:\Program File (x86)\huaweicloud-sdk-cpp-v3。

开始使用

详细的SDK介绍,使用异步客户端,配置日志请参见SDK中心C++ SDK使用指导

  1. 导入依赖模块
    #include <cstdlib>
    #include <iostream>
    #include <string>
    #include <memory>
    #include <huaweicloud/core/exception/Exceptions.h>
    #include <huaweicloud/core/Client.h>
    #include <huaweicloud/frs/v2/FrsClient.h>
    using namespace HuaweiCloud::Sdk::Frs::V2;
    using namespace HuaweiCloud::Sdk::Frs::V2::Model;
    using namespace HuaweiCloud::Sdk::Core;
    using namespace HuaweiCloud::Sdk::Core::Exception;
    using namespace std;
  2. 配置客户端连接参数
    • 默认配置
      // 使用默认配置
      HttpConfig httpConfig = HttpConfig();
    • 网络代理(可选)
      // 根据需要配置网络代理
      httpConfig.setProxyProtocol("http");
      httpConfig.setProxyHost("proxy.huawei.com");
      httpConfig.setProxyPort("8080");
      httpConfig.setProxyUser("username");
      httpConfig.setProxyPassword("password");
    • 超时配置(可选)
      // 默认连接超时为60秒,默认读取超时为120秒。可根据需求修改该默认值
      httpConfig.setConnectTimeout(60);
      httpConfig.setReadTimeout(120);
    • SSL配置(可选)
      // 配置跳过服务端证书验证
      httpConfig.setIgnoreSslVerification(true);
  3. 配置认证信息
    配置AK、SK、projectId信息。华为云通过AK识别用户的身份,通过SK对请求数据进行签名验证,用于确保请求的机密性、完整性和请求者身份的正确性。
    string ak = getenv("HUAWEICLOUD_SDK_AK");
    string sk = getenv("HUAWEICLOUD_SDK_SK");
    string projectId = getenv("PROJECT_ID");
    auto auth = std::make_unique<BasicCredentials>();
    auth->withAk(ak)
       .withSk(sk)
       .withProjectId(projectId);

    认证参数说明:

    • ak、sk:访问秘钥信息,获取方法请参见准备工作
    • projectId:华为云项目ID,获取方法请参见准备工作
    • 认证用的 ak 和sk 硬编码到代码中或者明文存储都有很大的安全风险,建议在配置文件或者环境变量中密文存放,使用时解密,确保安全。
    • 本示例以 ak 和 sk 保存在环境变量中来实现身份验证为例,运行本示例前请先在本地环境中设置环境变量HUAWEICLOUD_SDK_AK,HUAWEICLOUD_SDK_SK和PROJECT_ID。
    图3 Windows环境新建环境变量
  4. 初始化客户端
    指定云服务endpoint方式
    string endpoint = "https://face.cn-north-4.myhuaweicloud.com";
    auto client = FrsClient::newBuilder()
            .withCredentials(std::unique_ptr<Credentials>(auth.release()))
            .withHttpConfig(httpConfig)
            .withEndPoint(endpoint)
            .build();

    endpoint:华为云各服务应用区域和各服务的终端节点,详情请查看 地区和终端节点

  5. 发送请求并查看响应
    // 以调用人脸检测接口 RecognizeGeneralTable 为例
    DetectFaceByBase64Request request;
    FaceDetectBase64Req body;
    body.setImageBase64("图片的base64编码");
    request.setBody(body);
    std::cout << "-----begin execute request-------" << std::endl;

    使用人脸比对SDK时,image1、image2参数需为相同类型,即同为url、base64或file。

  6. 异常处理
    表1 异常处理

    一级分类

    一级分类说明

    二级分类

    二级分类说明

    ConnectionException

    连接类异常

    HostUnreachableException

    网络不可达、被拒绝。

    SslHandShakeException

    SSL认证异常。

    RequestTimeoutException

    响应超时异常

    CallTimeoutException

    单次请求,服务器处理超时未返回。

    RetryOutageException

    在重试策略消耗完成后,仍无有效的响应。

    ServiceResponseException

    服务器响应异常

    ServerResponseException

    服务端内部错误,Http响应码:[500,]。

    ClientRequestException

    请求参数不合法,Http响应码:[400, 500)

    // 捕获和处理不同类型的异常
    try {
            auto reponse = client->detectFaceByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;

SDK demo 代码解析

  • 人脸检测
    DetectFaceByBase64Request request;
    FaceDetectBase64Req body;
        body.setImageBase64("图片的base64编码");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->detectFaceByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 人脸比对
    CompareFaceByBase64Request request;
    FaceCompareBase64Req body;
        body.setImage1Base64("图片1的base64编码");
        body.setImage2Base64("图片2的base64编码");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->compareFaceByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 人脸搜索
    SearchFaceByBase64Request request;
        request.setFaceSetName("人脸库名称");
    FaceSearchBase64Req body;
        body.setImageBase64("图片的base64编码");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->searchFaceByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 创建人脸库
    CreateFaceSetRequest request;
    CreateFaceSetReq body;
        body.setFaceSetName("人脸库名称");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->createFaceSet(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 查询人脸库
    ShowFaceSetRequest request;
        request.setFaceSetName("人脸库名称");
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->showFaceSet(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 查询所有人脸库
    ShowAllFaceSetsRequest request;
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->showAllFaceSets(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 删除人脸库
    DeleteFaceSetRequest request;
        request.setFaceSetName("人脸库名称");
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->deleteFaceSet(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 添加人脸
    AddFacesByBase64Request request;
        request.setFaceSetName("人脸库名称");
    AddFacesBase64Req body;
        body.setImageBase64("图片的base64编码");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->addFacesByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 删除人脸
    DeleteFaceByFaceIdRequest request;
        request.setFaceSetName("人脸库名称");
        request.setFaceId("人脸ID");
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->deleteFaceByFaceId(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 批量删除人脸
    BatchDeleteFacesRequest request;
        request.setFaceSetName("人脸库名称");
    DeleteFacesBatchReq body;
        body.setFilter("过滤条件");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->batchDeleteFaces(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 更新人脸
    UpdateFaceRequest request;
        request.setFaceSetName("人脸库名称");
    UpdateFaceReq body;
        body.setFaceId("人脸库ID");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->updateFace(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 查询人脸
    ShowFacesByFaceIdRequest request;
        request.setFaceSetName("人脸库名城管");
        request.setFaceId("人脸ID");
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->showFacesByFaceId(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 动作活体检测
    DetectLiveByBase64Request request;
    LiveDetectBase64Req body;
        body.setActions("动作代码顺序列表");
        body.setVideoBase64("视频数据的base64编码");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->detectLiveByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;
  • 静默活体检测
    DetectLiveFaceByBase64Request request;
    LiveDetectFaceBase64Req body;
        body.setImageBase64("图片的base64编码");
        request.setBody(body);
        std::cout << "-----begin execute request-------" << std::endl;
    try {
            auto reponse = client->detectLiveFaceByBase64(request);
            std::cout << reponse->getHttpBody() << std::endl;
        } catch (HostUnreachableException& e) {
            std::cout << "host unreachable:" << e.what() << std::endl;
        } catch (SslHandShakeException& e) {
            std::cout << "ssl handshake error:" << e.what() << std::endl;
        } catch (RetryOutageException& e) {
            std::cout << "retryoutage error:" << e.what() << std::endl;
        } catch (CallTimeoutException& e) {
            std::cout << "call timeout:" <<  e.what() << std::endl;
        } catch (ServiceResponseException& e) {
            std::cout << "http status code:" << e.getStatusCode() << std::endl;
            std::cout << "error code:" << e.getErrorCode() << std::endl;
            std::cout << "error msg:" << e.getErrorMsg() << std::endl;
            std::cout << "RequestId:" << e.getRequestId() << std::endl;
        } catch (exception& e) {
            std:cout << "unknown exception:" << e.what() << std::endl;
        }
        std::cout << "------request finished--------" << std::endl;
        return0;

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