我无法使用 Java 中的 Google TTS 客户端库发出请求。每次它都会抛出一堆异常。
我只是尝试获取可用声音的列表。
GoogleCredentials creds = null;
TextToSpeechClient textToSpeechClient = null;
try {
creds = GoogleCredentials.fromStream(new FileInputStream(credsFile));
TextToSpeechSettings settings = TextToSpeechSettings.newBuilder().setCredentialsProvider(FixedCredentialsProvider.create(creds)).build();
textToSpeechClient = TextToSpeechClient.create(settings);
} catch (IOException e) {
e.printStackTrace();
System.exit(-2);
}
if (cmd.hasOption('l')) {
ListVoicesRequest request = ListVoicesRequest.getDefaultInstance();
ListVoicesResponse response = textToSpeechClient.listVoices(request);
List<Voice> voices = response.getVoicesList();
System.out.println("Available voices :");
for (Voice v : voices) {
System.out.printf(" - %s, [%d]: %s/%s", v.getName(), v.getLanguageCodesCount(), v.getLanguageCodes(0), v.getSsmlGender());
}
textToSpeechClient.close();
System.exit(0);
}
我首先认为它来自凭据文件。但事实并非如此，该文件的位置正确。
我明白了。
avr. 02, 2019 11:36:46 PM io.grpc.internal.ManagedChannelImpl$1 uncaughtException
SEVERE: [Channel<1>: (texttospeech.googleapis.com:443)] Uncaught exception in the SynchronizationContext. Panic!
java.lang.IllegalStateException: Could not find policy 'pick_first'. Make sure its implementation is either registered to LoadBalancerRegistry or included in META-INF/services/io.grpc.LoadBalancerProvider from your jar files.
at io.grpc.internal.AutoConfiguredLoadBalancerFactory$AutoConfiguredLoadBalancer.<init>(AutoConfiguredLoadBalancerFactory.java:93)
at io.grpc.internal.AutoConfiguredLoadBalancerFactory.newLoadBalancer(AutoConfiguredLoadBalancerFactory.java:64)
at io.grpc.internal.ManagedChannelImpl.exitIdleMode(ManagedChannelImpl.java:357)
at io.grpc.internal.ManagedChannelImpl$ChannelTransportProvider$1ExitIdleModeForTransport.run(ManagedChannelImpl.java:455)
at io.grpc.SynchronizationContext.drain(SynchronizationContext.java:101)
at io.grpc.SynchronizationContext.execute(SynchronizationContext.java:130)
at io.grpc.internal.ManagedChannelImpl$ChannelTransportProvider.get(ManagedChannelImpl.java:459)
(...) a whole bunch of other lines
如何修复此错误？
请注意，我使用的是最新的 google-cloud-texttospeech 库（版本 0.85.0-beta）。
如果您将 Gradle 与 ShadowJar 插件一起使用，则只需执行以下操作即可合并来自各个 gRPC 库的服务文件的内容：
shadowJar {
mergeServiceFiles()
}
从线程中发现here https://github.com/grpc/grpc-java/issues/5493#issuecomment-478500418.
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