Google DocumentAI Java 示例失败，并出现 io.grpc.StatusRuntimeException：INVALID_ARGUMENT：请求包含无效参数

Question

我浪费了几个小时尝试https://cloud.google.com/document-ai/docs/quickstart-client-libraries中的Google Document AI java示例

如果您像这样输入您的项目 ID、位置和处理器 ID

        String projectId = "6493xxxxxxxx";
        String location = "eu";
        String processorId = "74451xxxxxx";
        String filePath = "/Users/schube/Desktop/file.pdf";

并运行该示例，您只会得到一个InvalidArgumentException：

Exception in thread "main" com.google.api.gax.rpc.InvalidArgumentException: io.grpc.StatusRuntimeException: INVALID_ARGUMENT: Request contains an invalid argument.
    at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:49)
    at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:72)
    at com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:60)
    at com.google.api.gax.grpc.GrpcExceptionCallable$ExceptionTransformingFuture.onFailure(GrpcExceptionCallable.java:97)
    at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:68)
    at com.google.common.util.concurrent.Futures$CallbackListener.run(Futures.java:1133)
    at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31)
    at com.google.common.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:1277)
    at com.google.common.util.concurrent.AbstractFuture.complete(AbstractFuture.java:1038)
    at com.google.common.util.concurrent.AbstractFuture.setException(AbstractFuture.java:808)
    at io.grpc.stub.ClientCalls$GrpcFuture.setException(ClientCalls.java:563)
    at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(ClientCalls.java:533)
    at io.grpc.internal.DelayedClientCall$DelayedListener$3.run(DelayedClientCall.java:463)
    at io.grpc.internal.DelayedClientCall$DelayedListener.delayOrExecute(DelayedClientCall.java:427)
    at io.grpc.internal.DelayedClientCall$DelayedListener.onClose(DelayedClientCall.java:460)
    at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:557)
    at io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:69)
    at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:738)
    at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:717)
    at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
    at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
    Suppressed: com.google.api.gax.rpc.AsyncTaskException: Asynchronous task failed
        at com.google.api.gax.rpc.ApiExceptions.callAndTranslateApiException(ApiExceptions.java:57)
        at com.google.api.gax.rpc.UnaryCallable.call(UnaryCallable.java:112)
        at com.google.cloud.documentai.v1.DocumentProcessorServiceClient.processDocument(DocumentProcessorServiceClient.java:232)
        at documentai.QuickStart.quickStart(QuickStart.java:57)
        at documentai.QuickStart.main(QuickStart.java:25)
Caused by: io.grpc.StatusRuntimeException: INVALID_ARGUMENT: Request contains an invalid argument.
    at io.grpc.Status.asRuntimeException(Status.java:535)
    ... 13 more

这真的很棒，因为哪个 f*** 元素是无效的？异常中没有详细信息，也没有日志文件。

Answer 1

所以，读完这篇文章后发现：对于 Node js 的 Google Document AI 客户端库来说，什么参数是无效的？

如果位置不是“us”而是“eu”，则必须指定其他端点。

天啊，为什么他们没有在教程或源代码中提到这一点？它只是说：

    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String location = "your-project-location"; // Format is "us" or "eu".
    String processorId = "your-processor-id";
    String filePath = "path/to/input/file.pdf";

确实应该提到，切换到“eu”是不够的。

所以简单的解决方案是，不要使用

        try (DocumentProcessorServiceClient client = DocumentProcessorServiceClient.create()) {

但

        try (DocumentProcessorServiceClient client = DocumentProcessorServiceClient.create(
                DocumentProcessorServiceSettings.newBuilder().setEndpoint("eu-documentai.googleapis.com:443").build())) {