java - 谷歌云 : Jetty ALPN/NPN has not been properly configured

Question

在使用 Google Pubsub 列出主题时出现异常，我的网络应用程序在 tomcat 上运行。

public static List<String> listTopics(GcpCredentials gcCredentials, String project) throws GCPException, IOException
{
    List<String> topics = new ArrayList<>();
    TopicAdminClient client = getTopicClient(gcCredentials);
    ProjectName projectName = ProjectName.create(project);
    ListTopicsPagedResponse response = client.listTopics(projectName);
    for (Topic topic :response.iterateAll())
    {
        topics.add(topic.getNameAsTopicName().getTopic());
    }
    return topics;
}`

异常(exception):

java.lang.IllegalArgumentException: Jetty ALPN/NPN has not been properly configured.
at 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)

Answer 1

我在 Netty 版本 4.1.15.Final 中观察到了这个问题，但在 4.1.13.Final 中没有观察到这个问题。检查您的传递依赖项。即 Spring Boot 引用了 Netty。

我添加到 POM 以使其与 Spanner API 版本 0.22.0-beta 一起使用的内容:
<properties>
<v.netty>4.1.13.Final</v.netty>
</properties>
...
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-codec</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-codec-http</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-codec-http2</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-handler</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-common</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-handler-proxy</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-transport</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-resolver</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-codec-socks</artifactId>
<version>${v.netty}</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-buffer</artifactId>
<version>${v.netty}</version>
</dependency>
</dependencies>
</dependencyManagement>
如果问题仍然存在，或者它不是一个选项，请使用适当的引导类路径条目运行您的 JVM，例如:
java -Xbootclasspath/p:/tmp/alpn-boot-8.1.11.v20170118.jar -cp ...
确保更换 /tmp/alpn-boot-8.1.11.v20170118.jar带有 alpn jar 的位置 匹配您的 JVM 版本 如本页所列:https://www.eclipse.org/jetty/documentation/9.4.x/alpn-chapter.html