IllegalArgumentException: Jetty ALPN/NPN没有正确配置

Question

我试图在google中使用google vision，但是我有以下问题：

2017年6月7日8:50上午8:50 io.grpc.internal.ChannelExecutor排水广告:可运行的抛出异常在ChannelExecutor java.lang.IllegalArgumentException:码头ALPN/NPN没有正确配置。在io.grpc.netty.GrpcSslContexts.selectApplicationProtocolConfig(GrpcSslContexts.java:174) at io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:151) at io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:139) at io.grpc.netty.GrpcSslContexts.forClient(GrpcSslContexts.java:109) at io.grpc.netty.NettyChannelBuilder.createProtocolNegotiatorByType(NettyChannelBuilder.java:335) at io.grpc.netty.NettyChannelBuilder.createProtocolNegotiator(NettyChannelBuilder.java:308) at io.grpc.netty.NettyChannelBuilder$NettyTransportFactory$DynamicNettyTransportParams.getProtocolNegotiator(NettyChannelBuilder.java:499) at io.grpc.netty.NettyChannelBuilder$NettyTransportFactory.newClientTransport(NettyChannelBuilder.java:448) at io.grpc.internal.CallCredentialsApplyingTransportFactory.newClientTransport(CallCredentialsApplyingTransportFactory.java:61) at io.grpc.internal.InternalSubchannel.startNewTransport(InternalSubchannel.java:209) at io.grpc.internal.InternalSubchannel.obtainActiveTransport(InternalSubchannel.java:186) at io.grpc.internal.ManagedChannelImpl$SubchannelImplImpl.obtainActiveTransport(ManagedChannelImpl.java:806) at io.grpc.internal.GrpcUtil.getTransportFromPickResult(GrpcUtil.java:568) at io.grpc.internal.DelayedClientTransport.reprocess(DelayedClientTransport.java:296) at io.grpc.internal.ManagedChannelImpl$LbHelperImpl$5.run(ManagedChannelImpl.java:724) at io.grpc.internal.ChannelExecutor.drain(ChannelExecutor.java:87) at io.grpc.internal.ManagedChannelImpl$LbHelperImpl.runSerialized(ManagedChannelImpl.java:715) at io.grpc.internal.ManagedChannelImpl$NameResolverListenerImpl.onUpdate(ManagedChannelImpl.java:752) at io.grpc.internal.DnsNameResolver$1.run(DnsNameResolver.java:174) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)

我正在尝试运行api自己的示例代码，如下所示：

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

        // The path to the image file to annotate
        String fileName = "./resources/wakeupcat.jpg";

        // Reads the image file into memory
        Path path = Paths.get(fileName);
        byte[] data = Files.readAllBytes(path);
        ByteString imgBytes = ByteString.copyFrom(data);

        // Builds the image annotation request
        List<AnnotateImageRequest> requests = new ArrayList<>();
        Image img = Image.newBuilder().setContent(imgBytes).build();
        Feature feat = Feature.newBuilder().setType(Type.LABEL_DETECTION).build();
        AnnotateImageRequest request = AnnotateImageRequest.newBuilder().addFeatures(feat).setImage(img).build();
        requests.add(request);

        // Performs label detection on the image file
        BatchAnnotateImagesResponse response = vision.batchAnnotateImages(requests);
        List<AnnotateImageResponse> responses = response.getResponsesList();

        for (AnnotateImageResponse res : responses) {
            if (res.hasError()) {
                System.out.printf("Error: %s\n", res.getError().getMessage());
                return;
            }

            for (EntityAnnotation annotation : res.getLabelAnnotationsList()) {
                annotation.getAllFields().forEach((k, v) -> System.out.printf("%s : %s\n", k, v.toString()));
            }
        }
    }
}

我使用以下依赖项：

    <dependency>
        <groupId>com.google.apis</groupId>
        <artifactId>google-api-services-vision</artifactId>
        <version>v1-rev357-1.22.0</version>
    </dependency>
    <dependency>
        <groupId>com.google.cloud</groupId>
        <artifactId>google-cloud-vision</artifactId>
        <version>0.17.2-beta</version>
    </dependency>

有人遇到过这个问题吗？

Answer 1

实际上，我发现要运行api，必须在web上下文中运行应用程序，并在Jetty服务器上运行应用程序。