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更新时间：2024-12-02 GMT+08:00
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媒资图像标签示例

本章节对媒资图像标签AK/SK方式使用SDK进行示例说明。

  • 媒资图像标签示例代码只需将AK/SK信息替换为实际AK/SK，代码中可以使用ImageMediaTaggingReq中的Url或Image方法配置图像信息（image和url参数二选一），示例中以url为例，配置完成后运行即可。
  • endpoint是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 。
  1. 媒资图像标签调用示例代码如下： 
    #include <cstdlib>
#include <iostream>
#include <string>
#include <memory>
#include <huaweicloud/core/exception/Exceptions.h>
#include <huaweicloud/core/Client.h>
#include <huaweicloud/image/v2/ImageClient.h>
using namespace HuaweiCloud::Sdk::Image::V2;
using namespace HuaweiCloud::Sdk::Image::V2::Model;
using namespace HuaweiCloud::Sdk::Core;
using namespace HuaweiCloud::Sdk::Core::Exception;
using namespace std;
int main(void)
{
   // 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CLOUD_SDK_AK和CLOUD_SDK_SK。
    string ak = getenv("CLOUD_SDK_AK");
    string sk = getenv("CLOUD_SDK_SK");
    string projectId = "";
    string endpoint = "https://image.cn-north-4.myhuaweicloud.com";
    auto auth = std::make_unique<BasicCredentials>();
    auth->withAk(ak)
        .withSk(sk)
        .withProjectId(projectId);
    HttpConfig httpConfig = HttpConfig();
    auto client = ImageClient::newBuilder()
            .withCredentials(std::unique_ptr<Credentials>(auth.release()))
            .withHttpConfig(httpConfig)
            .withEndPoint(endpoint)
            .build();
    RunImageMediaTaggingRequest request;
    ImageMediaTaggingReq body;
    body.setLimit(10);
    body.setThreshold(60);
    body.setLanguage("zh");
    body.setImage("输入图片,使用base64编码");
    request.setBody(body);
    std::cout << "-----begin execute request-------" << std::endl;
    try {
        auto reponse = client->runImageMediaTagging(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;
    return 0;
}
  2. 执行示例代码文件，控制台输出媒资图像标签结果即表示程序执行成功。相关参数说明请参考媒资图像标签API。 
     RunImageMediaTaggingResponse {"result": {"tags": [{"confidence": "83.15", "type": "社会", "tag": "火灾", "i18n_tag": {"zh": "火灾", "en": "Fire"}, "i18n_type": {"zh": "社会", "en": "Society"}, "instances": []}, {"confidence": "70.21", "type": "其他", "tag": "火", "i18n_tag": {"zh": "火", "en": "Fire"}, "i18n_type": {"zh": "其他", "en": "Other"}, "instances": []}, {"confidence": "53.63", "type": "学科科学", "tag": "火球", "i18n_tag": {"zh": "火球", "en": "Fireball"}, "i18n_type": {"zh": "学科科学", "en": "Subject science"}, "instances": []}, {"confidence": "53.45", "type": "其他", "tag": "营火", "i18n_tag": {"zh": "营火", "en": "Campfire"}, "i18n_type": {"zh": "其他", "en": "Other"}, "instances": []}, {"confidence": "50.73", "type": "人工场景", "tag": "林业局", "i18n_tag": {"zh": "林业局", "en": "Forestry bureau"}, "i18n_type": {"zh": "人工场景", "en": "Manual scenario"}, "instances": []}, {"confidence": "50.34", "type": "其他", "tag": "烧毁的", "i18n_tag": {"zh": "烧毁的", "en": "Burned"}, "i18n_type": {"zh": "其他", "en": "Other"}, "instances": []}, {"confidence": "46.63", "type": "场景", "tag": "火焰", "i18n_tag": {"zh": "火焰", "en": "Flame"}, "i18n_type": {"zh": "场景", "en": "Scene"}, "instances": []}, {"confidence": "45.27", "type": "其他", "tag": "燃烧", "i18n_tag": {"zh": "燃烧", "en": "Burning"}, "i18n_type": {"zh": "其他", "en": "Other"}, "instances": []}, {"confidence": "41.32", "type": "职业/角色", "tag": "消防员", "i18n_tag": {"zh": "消防员", "en": "Fireman"}, "i18n_type": {"zh": "职业/角色", "en": "Career/Role"}, "instances": []}, {"confidence": "39.97", "type": "动作", "tag": "烧香", "i18n_tag": {"zh": "烧香", "en": "Incense burning"}, "i18n_type": {"zh": "动作", "en": "Action"}, "instances": []}]}}
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