/java.lang.NoClassDefFoundErrorのエラー：com/google/api/services/pubsub/PubsubScopes

Question

App EngineにPubSub-Mavenプロジェクトを配備しようとしています。展開が成功しているが、ログインした後、私はエラーを取得：

<properties> 
    <maven.compiler.source>1.8</maven.compiler.source> 
    <maven.compiler.target>1.8</maven.compiler.target> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 

    <failOnMissingWebXml>false</failOnMissingWebXml> 
    <appengine.maven.plugin>1.3.1</appengine.maven.plugin> 
    <jetty.maven.plugin>9.4.3.v20170317</jetty.maven.plugin> 
</properties> 



<dependencyManagement> 
    <dependencies> 
     <dependency> 
      <groupId>io.grpc</groupId> 
      <artifactId>grpc-core</artifactId> 
      <version>1.2.0</version> 
     </dependency> 

     <dependency> 
      <groupId>com.google.auth</groupId> 
      <artifactId>google-auth-library-credentials</artifactId> 
      <version>0.6.1</version> 
     </dependency> 
     <dependency> 
      <groupId>com.google.auth</groupId> 
      <artifactId>google-auth-library-oauth2-http</artifactId> 
      <version>0.6.1</version> 
     </dependency> 
    </dependencies> 
</dependencyManagement> 

<dependencies> 
    <dependency>      
     <groupId>javax.servlet</groupId> 
     <artifactId>javax.servlet-api</artifactId> 
     <version>3.1.0</version> 
     <scope>provided</scope>   
    </dependency> 



    <dependency> 
     <groupId>com.google.cloud</groupId> 
     <artifactId>google-cloud-pubsub</artifactId> 
     <version>0.17.2-alpha</version> 
    </dependency> 
    <dependency> 
     <groupId>com.google.cloud</groupId> 
     <artifactId>google-cloud-datastore</artifactId> 
     <version>1.0.1</version> 
    </dependency> 

    <dependency> 
     <groupId>com.google.api-client</groupId> 
     <artifactId>google-api-client</artifactId> 
     <version>1.21.0</version> 
    </dependency> 
    <dependency> 
     <groupId>com.google.api-client</groupId> 
     <artifactId>google-api-client-appengine</artifactId> 
     <version>1.21.0</version> 
    </dependency> 
    <dependency> 
     <groupId>com.google.api-client</groupId> 
     <artifactId>google-api-client-servlet</artifactId> 
     <version>1.21.0</version> 
    </dependency> 


</dependencies> 

<build> 


    <plugins> 

     <plugin>       
      <groupId>org.eclipse.jetty</groupId> 
      <artifactId>jetty-maven-plugin</artifactId> 
      <version>${jetty.maven.plugin}</version> 
     </plugin> 

     <plugin> 
      <groupId>com.google.cloud.tools</groupId> 
      <artifactId>appengine-maven-plugin</artifactId> 
      <version>${appengine.maven.plugin}</version> 
      <configuration> 
      <deploy.stopPreviousVersion>true</deploy.stopPreviousVersion>    </configuration> 
     </plugin> 

    </plugins> 

</build> 

Answer 1

com.google.api.services.pubsubパッケージがgoogle-api-services-pubsubdependencyでエクスポートされています。私はこのポンポンを使用する包装のために

Error for/
java.lang.NoClassDefFoundError: com/google/api/services/pubsub/PubsubScopes 

at com.wi.pubsubtest.util.PubsubUtils.getClient(PubsubUtils.java:80) 
    at de.com.wi.pubsubtest.util.PubsubUtils.getClient(PubsubUtils.java:60) 
..... 

を。したがって、プロジェクトに追加する必要があります。

<dependency> 
    <groupId>com.google.apis</groupId> 
    <artifactId>google-api-services-pubsub</artifactId> 
    <version>v1-rev356-1.22.0</version> 
</dependency>