google Cloud spanner java.lang.IllegalArgumentException: Jetty ALPN/NPN has not been properly configured

问题

I am new to the Google cloud Spanner and to explore it I started with documentation provided by google Here. To explore any database we start with data operations and the same I did, I started with writing data to the spanner using simple java application given here https://github.com/GoogleCloudPlatform/java-docs-samples/blob/master/spanner/cloud-client/src/main/java/com/example/spanner/SpannerSample.java.
I have made changes in driver class on respective places shown in following code snippet:

 public static void main(String[] args) throws Exception {
            String path = "File_Path";

            SpannerOptions.Builder options = SpannerOptions.newBuilder().setCredentials(GoogleCredentials.fromStream(new FileInputStream(path)));
            options.setProjectId("Project_id");
            Spanner spanner = (options.build()).getService();
            try {
                DatabaseId db = DatabaseId.of("project_id", "spannerInstance", "Database_name");
                DatabaseClient dbClient = spanner.getDatabaseClient(db);
                run(dbClient);
            } finally {
                spanner.closeAsync().get();
            }
            System.out.println("Closed client");
        }

Now, When I am trying to execute the code I end up with following error:

Exception in thread "main" 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 com.google.cloud.spanner.SpannerOptions$NettyRpcChannelFactory.newSslContext(SpannerOptions.java:283)
    at com.google.cloud.spanner.SpannerOptions$NettyRpcChannelFactory.newChannel(SpannerOptions.java:274)
    at com.google.cloud.spanner.SpannerOptions.createChannel(SpannerOptions.java:253)
    at com.google.cloud.spanner.SpannerOptions.createChannels(SpannerOptions.java:240)
    at com.google.cloud.spanner.SpannerOptions.<init>(SpannerOptions.java:89)
    at com.google.cloud.spanner.SpannerOptions.<init>(SpannerOptions.java:43)
    at com.google.cloud.spanner.SpannerOptions$Builder.build(SpannerOptions.java:180)

while searching for this issue I have been suggest to add some dependencies like:

   compile group: 'org.eclipse.jetty.alpn', name: 'alpn-api', version: '1.1.3.v20160715'
   compile group: 'org.mortbay.jetty.alpn', name: 'jetty-alpn-agent', version: '2.0.6'
   compile group: 'io.grpc', name: 'grpc-all', version: '1.2.0'
   compile group: 'io.netty', name: 'netty-all', version: '4.0.29.Final'
   compile group: 'org.eclipse.jetty.orbit', name: 'javax.servlet', version: '3.0.0.v201112011016'

but facing same issue, I am also using Bigquery and other GCP's feature one same working environment and they all are working fine except google-Spanner, any suggestion on this is appreciated.
Thanks.

回答1:

Please read the comments on the question, @Mairbek Khadikov and my discussion on this conclude the actual reason of the issue. As discussed in comment the actual problem was with another dependencies. By adding

configurations {
    compile.exclude module: 'netty-all'
}

to the build.gradle file this issue has resolved.

Here is the link of github issue I raised regarding to this error. github issue where I posted exact issue eventually which I got to know and the resolution of that by, '@michaelbausor'.

来源：https://stackoverflow.com/questions/44546706/google-cloud-spanner-java-lang-illegalargumentexception-jetty-alpn-npn-has-not

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Hadoop

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jetty

google-cloud-platform

google-cloud-spanner