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Google Cloud Vision API-创建Grpc.Core.Channel时出错

google-client google-cloud-vision google-cloud-platform c#

0

Thomas · 技术社区 · 7 年前

https://googleapis.github.io/google-cloud-dotnet/docs/Google.Cloud.Vision.V1/api/Google.Cloud.Vision.V1.ImageAnnotatorClient.html 在

创建(ServiceEndpoint、ImageAnnotatorSetting)

“GoogleCredential”不包含

下面是我的代码:

GoogleCredential credential = GoogleCredential
    .FromFile(@"C:\Users\...\12345.json")
    .CreateScoped(ImageAnnotatorClient.DefaultScopes);
            Google.Cloud.Vision.V1.Image image1 = Google.Cloud.Vision.V1.Image.FromFile(@"c:\Users\....\Image14b.png");

            Channel channel = new Channel(
    ImageAnnotatorClient.DefaultEndpoint.Host, ImageAnnotatorClient.DefaultEndpoint.Port, credential.ToChannelCredentials());
            ImageAnnotatorClient client = ImageAnnotatorClient.Create(channel);

            IReadOnlyList<EntityAnnotation> textAnnotations = client.DetectText(image1);

        Channel channel = new Channel(
ImageAnnotatorClient.DefaultEndpoint.Host, ImageAnnotatorClient.DefaultEndpoint.Port, credential.ToChannelCredentials());

有什么提示吗?

1 回复 | 直到 7 年前

1

5

Jon Skeet 7 年前

您可能缺少using指令之一,特别是

using Grpc.Auth;

见 here 定义 ToChannelCredentials 作为一种扩展方法。

检查你是否包括所有其他的 using 示例中也存在指令。