我是谷歌云扳手的新手，为了探索它，我从谷歌提供的文档开始。为了探索任何数据库，我们从数据操作开始，就像我做的一样，我从使用这里给出的简单java应用程序将数据写入扳手开始https://github.com/googlecloudplatform/java-docs-samples/blob/master/spanner/cloud-client/src/main/java/com/example/spanner/spannersample.java.
我在驱动程序类中的相应位置进行了更改，如以下代码段所示：

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");
        }

现在，当我尝试执行代码时，出现以下错误：

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)

在搜索此问题时，有人建议我添加一些依赖项，如：

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'

但面对同样的问题，我也在使用bigquery和其他gcp的功能在同一个工作环境下，他们都工作良好，除了谷歌扳手，任何建议对此表示感谢。
谢谢。