BigQuery和OAuth2

Question

我正在尝试使用服务帐户方法访问Google BigQuery .我的代码如下:

private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();

private static final JsonFactory JSON_FACTORY = new JacksonFactory();

GoogleCredential credentials = new GoogleCredential.Builder()
            .setTransport(HTTP_TRANSPORT)
            .setJsonFactory(JSON_FACTORY)
            .setServiceAccountId("XXXXX@developer.gserviceaccount.com")
            .setServiceAccountScopes(BigqueryScopes.BIGQUERY)
            .setServiceAccountPrivateKeyFromP12File(
                    new File("PATH-TO-privatekey.p12"))
            .build();
    Bigquery bigquery = Bigquery.builder(HTTP_TRANSPORT, JSON_FACTORY).setHttpRequestInitializer(credentials)
            .build();
    com.google.api.services.bigquery.Bigquery.Datasets.List datasetRequest = bigquery.datasets().list(
            "PROJECT_ID");

    DatasetList datasetList = datasetRequest.execute();
    if (datasetList.getDatasets() != null) {
        java.util.List<Datasets> datasets = datasetList.getDatasets();
        System.out.println("Available datasets\n----------------");
        for (Datasets dataset : datasets) {
            System.out.format("%s\n", dataset.getDatasetReference().getDatasetId());
        }
    }

但它抛出以下异常:

Exception in thread "main"  com.google.api.client.googleapis.json.GoogleJsonResponseException: 401 Unauthorized
{
  "code" : 401,
  "errors" : [ {
    "domain" : "global",
    "location" : "Authorization",
    "locationType" : "header",
    "message" : "Authorization required",
    "reason" : "required"
  } ],
  "message" : "Authorization required"
}
at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:159)
at com.google.api.client.googleapis.json.GoogleJsonResponseException.execute(GoogleJsonResponseException.java:187)
at com.google.api.client.googleapis.services.GoogleClient.executeUnparsed(GoogleClient.java:115)
at com.google.api.client.http.json.JsonHttpRequest.executeUnparsed(JsonHttpRequest.java:112)
at com.google.api.services.bigquery.Bigquery$Datasets$List.execute(Bigquery.java:979)

在此行上触发了异常:

  DatasetList datasetList = datasetRequest.execute();

我从第二行看到来自Google API控制台的帐户ID,如下所示:

    Client ID:  XXXXX.apps.googleusercontent.com
    Email address:  XXXXX@developer.gserviceaccount.com

我错过了什么？

Answer 1

找到了!埃里克和迈克尔的代码都运作良好.

通过在客户端计算机上错误地设置时间,可以重现问题中发布的错误.幸运的是,它可以通过正确设置客户端计算机上的时间来解决.

注意:对于它的价值,我使用"Internet时间设置"对话框中的"立即更新"按钮在Windows 7框上同步时间.我认为这应该是非常白痴的...但我想我打败了系统.它修正了秒数,但机器关闭了一分钟.之后,BigQuery调用失败了.手动更改时间后,它成功了.