Question

我按照重新预订（http://www.redbooks.ibm.com/redbooks/pdfs/sg248393.pdf）中的步骤启动了一个小型Java应用程序。我还按照他们的描述创建了一个API密钥。

现在我收到未经授权：由于凭据无效而拒绝访问。

package vrproject;

//Here you import Watson Java SDK to make it available in your code. 
import com.ibm.watson.developer_cloud.visual_recognition.v3.*;
import com.ibm.watson.developer_cloud.visual_recognition.v3.model.*;

public class ClassifyImage {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    VisualRecognition service = new VisualRecognition(VisualRecognition.VERSION_DATE_2016_05_20); 
    service.setEndPoint("https://gateway.watsonplatform.net/visual-recognition/api");

    //Here you replace "your_api_key_here" by the API Key you created in "Creating 
    //a Watson Visual Recognition service instance and getting the API key"
    service.setApiKey("123apikey");

    //Here you add the URL of your image. The image size should not exceed 2MB.
    String imageURL = new
    String("https://raw.githubusercontent.com/watson-developer-cloud/doc-tutorial-downloads/master/visual-recog nition/fruitbowl.jpg");
    ClassifyImagesOptions options = new ClassifyImagesOptions.Builder().url(imageURL).build(); 
    VisualClassification result = service.classify(options).execute(); System.out.println("Classification Results:");
    System.out.println(result);
}

}

错误消息：

    Mär 05, 2020 7:02:23 PM com.ibm.watson.developer_cloud.service.WatsonService processServiceCall
SCHWERWIEGEND: POST https://gateway.watsonplatform.net/visual-recognition/api/v3/classify?version=2016-05-20&api_key=123apikey, status: 401, error: Unauthorized
Exception in thread "main" com.ibm.watson.developer_cloud.service.exception.UnauthorizedException: Unauthorized: Access is denied due to invalid credentials
    at com.ibm.watson.developer_cloud.service.WatsonService.processServiceCall(WatsonService.java:418)
    at com.ibm.watson.developer_cloud.service.WatsonService$1.execute(WatsonService.java:180)
    at vrproject.ClassifyImage.main(ClassifyImage.java:22)

您知道为什么我会收到这些错误吗？我不确定版本是否太旧，我只是使用本书中的版本。

Answer 1

该红皮书已于2017年发布，它显示的身份验证机制已过时，其使用的SDK已被弃用。您需要根据当前的API文档来修改代码：https://cloud.ibm.com/apidocs/visual-recognition/visual-recognition-v3?code=java#classify-images

编写示例代码时的位置

IamAuthenticator authenticator = new IamAuthenticator("{apikey}");
VisualRecognition visualRecognition = new VisualRecognition("2018-03-19", authenticator);
visualRecognition.setServiceUrl("{url}");

InputStream imagesStream = new FileInputStream("./fruitbowl.jpg");
ClassifyOptions classifyOptions = new ClassifyOptions.Builder()
  .imagesFile(imagesStream)
  .classifierIds(Arrays.asList("food"))
  .build();
ClassifiedImages result = visualRecognition.classify(classifyOptions).execute().getResult();
System.out.println(result);x

您将依赖SDK的地方

<dependency>
  <groupId>com.ibm.watson</groupId>
  <artifactId>ibm-watson</artifactId>
  <version>8.3.0</version>
</dependency>

Answer 2

您没有使用正确的服务端点。链接到的文档显示了端点URL：https://gateway-a.watsonplatform.net/visual-recognition/api

您正在使用https://gateway.watsonplatform.net/visual-recognition/api

Answer 3

您可以在Watson Visual Recognition服务页面上获得API_KEY和Endpoint。

在凭据下的视觉识别服务“管理” 页面上，您应该看到

API密钥
URL

URL格式如下

https://api.REGION.visual-recognition.watson.cloud.ibm.com/instances/INSTANCEID

Watson Visual Recognition-未经授权：由于凭据无效而拒绝访问

3 个答案: