无法调用SpeechClient.recognize（RecognizeRequest请求）：抛出异常 [英] Cannot call SpeechClient.recognize(RecognizeRequest request): Throwing Exception

问题描述

这是我第一次发布，因此我对规则不太熟悉，但是可以。
我一直在尝试使Google Cloud Speech API在Android上运行，但无济于事。相同的代码在Java上可以正常工作，但在Android上却不能。
我的代码可以正常运行，直到使用语音客户端调用Recognition方法为止。
这是错误：

This is my first time posting, so I'm not too familiar with the rules, but here goes. I've been trying to get the Google Cloud Speech API to work on Android, but to no avail. The same code works just fine on Java, but not on Android. My code runs fine until I call the recognize method, using a speech client. Here is the error:

11-02 18:38:03.922 6959-6982/capstone.speechrecognitionsimple E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: capstone.speechrecognitionsimple, PID: 6959
java.lang.RuntimeException: An error occured while executing doInBackground()
    at android.os.AsyncTask$3.done(AsyncTask.java:304)
    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
    at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
    at java.util.concurrent.FutureTask.run(FutureTask.java:242)
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
    at java.lang.Thread.run(Thread.java:818)
 Caused by: com.google.common.util.concurrent.ExecutionError: java.lang.AbstractMethodError: abstract method "java.util.concurrent.ScheduledExecutorService io.grpc.internal.ClientTransportFactory.getScheduledExecutorService()"
    at com.google.common.util.concurrent.Futures.wrapAndThrowUnchecked(Futures.java:1319)
    at com.google.common.util.concurrent.Futures.getUnchecked(Futures.java:1311)
    at com.google.api.gax.rpc.ApiExceptions.callAndTranslateApiException(ApiExceptions.java:53)
    at com.google.api.gax.rpc.UnaryCallable.call(UnaryCallable.java:114)
    at com.google.cloud.speech.v1.SpeechClient.recognize(SpeechClient.java:245)
    at capstone.speechrecognitionsimple.MainActivity$InitTask.doInBackground(MainActivity.java:94)
    at capstone.speechrecognitionsimple.MainActivity$InitTask.doInBackground(MainActivity.java:38)
    at android.os.AsyncTask$2.call(AsyncTask.java:292)
    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
    at java.lang.Thread.run(Thread.java:818) 
 Caused by: java.lang.AbstractMethodError: abstract method "java.util.concurrent.ScheduledExecutorService io.grpc.internal.ClientTransportFactory.getScheduledExecutorService()"
    at io.grpc.internal.CallCredentialsApplyingTransportFactory.getScheduledExecutorService(CallCredentialsApplyingTransportFactory.java:52)
    at io.grpc.internal.ManagedChannelImpl$RealChannel.newCall(ManagedChannelImpl.java:557)
    at com.google.api.gax.grpc.GrpcHeaderInterceptor.interceptCall(GrpcHeaderInterceptor.java:59)
    at io.grpc.ClientInterceptors$InterceptorChannel.newCall(ClientInterceptors.java:104)
    at io.grpc.internal.ManagedChannelImpl.newCall(ManagedChannelImpl.java:536)
    at com.google.api.gax.grpc.GrpcDirectCallable.newCall(GrpcDirectCallable.java:76)
    at com.google.api.gax.grpc.GrpcDirectCallable.futureCall(GrpcDirectCallable.java:70)
    at com.google.api.gax.grpc.GrpcExceptionCallable.futureCall(GrpcExceptionCallable.java:65)
    at com.google.api.gax.grpc.GrpcAttemptCallable.call(GrpcAttemptCallable.java:80)
    at com.google.api.gax.grpc.GrpcRetryingCallable.futureCall(GrpcRetryingCallable.java:64)
    at com.google.api.gax.grpc.GrpcRetryingCallable.futureCall(GrpcRetryingCallable.java:46)
    at com.google.api.gax.rpc.EntryPointUnaryCallable.futureCall(EntryPointUnaryCallable.java:70)
    at com.google.api.gax.rpc.UnaryCallable.futureCall(UnaryCallable.java:89)
    at com.google.api.gax.rpc.UnaryCallable.call(UnaryCallable.java:114) 
    at com.google.cloud.speech.v1.SpeechClient.recognize(SpeechClient.java:245) 
    at capstone.speechrecognitionsimple.MainActivity$InitTask.doInBackground(MainActivity.java:94) 
    at capstone.speechrecognitionsimple.MainActivity$InitTask.doInBackground(MainActivity.java:38) 
    at android.os.AsyncTask$2.call(AsyncTask.java:292) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
    at java.lang.Thread.run(Thread.java:818) 

我不知道为什么会这样。这是我的代码：

I don't know why this is happening. Here is my code:

package capstone.speechrecognitionsimple;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import com.google.api.gax.core.FixedCredentialsProvider;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.cloud.speech.v1.RecognitionAudio;
import com.google.cloud.speech.v1.RecognitionConfig;
import com.google.cloud.speech.v1.RecognizeRequest;
import com.google.cloud.speech.v1.RecognizeResponse;
import com.google.cloud.speech.v1.SpeechClient;
import com.google.cloud.speech.v1.SpeechRecognitionAlternative;
import com.google.cloud.speech.v1.SpeechRecognitionResult;
import com.google.cloud.speech.v1.SpeechSettings;
import com.google.protobuf.ByteString;

import org.apache.commons.io.IOUtils;

import java.io.InputStream;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        InitTask init = new InitTask();
        init.execute();

    }


    class InitTask extends AsyncTask<ByteString, Void, String> {
        SpeechClient speechClient = null;
        protected String doInBackground(ByteString... strings) {
            String transcript = "Transcript:\n";
            try {
                Log.i("InitTask", "Creating client...");

                InputStream credentialsStream = getAssets().open("credentials.json");
                GoogleCredentials credentials = GoogleCredentials.fromStream(credentialsStream);
                FixedCredentialsProvider credentialsProvider = FixedCredentialsProvider.create(credentials);

                InputStream path = getAssets().open("audio.raw");
                byte[] data = IOUtils.toByteArray(path);
                ByteString audioBytes = ByteString.copyFrom(data);

                SpeechSettings speechSettings =
                        SpeechSettings.newBuilder()
                                .setCredentialsProvider(credentialsProvider)
                                .build();

                Log.i("InitTask", "Settings Created");

                speechClient = SpeechClient.create(speechSettings);

                Log.i("InitTask", "Client Created");

                RecognitionConfig.AudioEncoding encoding = RecognitionConfig.AudioEncoding.LINEAR16;
                Log.i("InitTask", "Encoding Created");

                int sampleRateHertz = 16000;
                String languageCode = "en-US";
                RecognitionConfig config = RecognitionConfig.newBuilder()
                        .setEncoding(encoding)
                        .setSampleRateHertz(sampleRateHertz)
                        .setLanguageCode(languageCode)
                        .build();

                Log.i("finalRec", "Config Created");

                RecognitionAudio audio = RecognitionAudio.newBuilder()
                        .setContent(audioBytes)
                        .build();
                Log.i("finalRec", "Audio Created");
                RecognizeRequest request = RecognizeRequest.newBuilder()
                        .setConfig(config)
                        .setAudio(audio)
                        .build();

                RecognizeResponse response = speechClient.recognize(request);
                Log.i("finalRec", "Called RECOGNIZE");


                List<SpeechRecognitionResult> results = response.getResultsList();

                for (SpeechRecognitionResult result : results) {
                    List<SpeechRecognitionAlternative> alternatives = result.getAlternativesList();
                    for (SpeechRecognitionAlternative alternative : alternatives) {
                        transcript+= alternative.getTranscript();
                    }
                }
            }
            catch(Exception e){
                Log.e("Client", "" + e.toString());
                e.printStackTrace();
            }
            try {
                speechClient.close();
            }  catch (Exception e) {
                Log.e("Client", "" + e.toString());
                e.printStackTrace();
            }
            return transcript;
        }

        protected void onPostExecute(String transcript) {
            Log.i("Transcript", "" +transcript);
        }
    }
}

最后，这是我的礼物构建文件：

And last, here's my gradle build file:

apply plugin: 'com.android.application'
apply plugin: 'com.google.protobuf'

ext {
    grpcVersion = '1.4.0'
}
android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "capstone.speechrecognitionsimple"
        minSdkVersion 15
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true

        javaCompileOptions{
            annotationProcessorOptions{
                includeCompileClasspath = true
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.2'
    }
    packagingOptions {
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/INDEX.LIST'
        exclude 'META-INF/io.netty.versions.properties'
        exclude 'META-INF/io.grpc.ManagedChannelProvider'
        exclude 'META-INF/services/io.grpc.ManagedChannelProvider'
        exclude 'project.properties'
        pickFirst 'META-INF/license.txt'
    }
}

protobuf {
    protoc {
        artifact = 'com.google.protobuf:protoc:3.3.0'
    }
    plugins {
        javalite {
            artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
        }
        grpc {
            artifact = "io.grpc:protoc-gen-grpc-java:${grpcVersion}"
        }
    }
    generateProtoTasks {
        all().each { task ->
            task.plugins {
                javalite {}
                grpc {
                    // Options added to --grpc_out
                    option 'lite'
                }
            }
        }
    }
}
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    provided 'com.jakewharton.auto.value:auto-value-annotations:1.4'
    annotationProcessor 'com.google.auto.value:auto-value:1.4.1'

    // gRPC
    compile "io.grpc:grpc-okhttp:$grpcVersion"
    compile "io.grpc:grpc-protobuf-lite:$grpcVersion"
    compile "io.grpc:grpc-stub:$grpcVersion"
    compile 'javax.annotation:javax.annotation-api:1.2'
    protobuf 'com.google.protobuf:protobuf-java:3.3.1'

    compile group: 'com.google.api.grpc', name: 'grpc-google-cloud-speech-v1', version: '0.1.13'
    compile group: 'com.google.cloud', name: 'google-cloud-speech', version: '0.26.0-alpha'

    // OAuth2 for Google API
    compile('com.google.auth:google-auth-library-oauth2-http:0.7.0') {
        exclude module: 'httpclient'
    }

    compile 'com.android.support:multidex:1.0.0'

}

推荐答案

我在Protobuf中遇到了同样的问题。对于遇到此问题的其他人，请确保您在顶级build.gradle中具有以下内容：

I had the same issue with Protobuf. For others running into this issue, make sure you have the following in your top-level build.gradle:

classpath'com.google.protobuf：protobuf-gradle-plugin ：0.8.6'

classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.6'

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