使用带有简单API密钥的Google Cloud Vision API

Question

如果我通过设置GOOGLE_APPLICATION_CREDENTIALS环境变量为正确的“服务帐户”引用json文件来使用隐式默认凭据，下面的快速入门代码可以很好地工作。

// Imports the Google Cloud client library
import com.google.cloud.vision.spi.v1.ImageAnnotatorClient;
import com.google.cloud.vision.v1.AnnotateImageRequest;
import com.google.cloud.vision.v1.AnnotateImageResponse;
import com.google.cloud.vision.v1.BatchAnnotateImagesResponse;

...


public class QuickstartSample {
  public static void main(String... args) throws Exception {
    // Instantiates a client
    ImageAnnotatorClient vision = ImageAnnotatorClient.create();

    ...

    BatchAnnotateImagesResponse response = vision.batchAnnotateImages(requests);
    List<AnnotateImageResponse> responses = response.getResponsesList();

    ...
  }
}

但是，我希望使用简单（单字符串）API密钥而不是服务帐户对API进行身份验证，而且我找不到解释如何通过这个java库进行身份验证的文档。有可能吗？

Answer 1

可以：创建ImageAnnotatorSettings，如下所示：

ImageAnnotatorSettings ias = ImageAnnotatorSettings.newBuilder()
        .setCredentialsProvider(
                FixedCredentialsProvider.create(#InputStream of your json key#)
        )
        .build();

替换您的线路

ImageAnnotatorClient vision = ImageAnnotatorClient.create();

与

ImageAnnotatorClient vision = ImageAnnotatorClient.create(ias);