Hi~
I’m trying to use Akka-gRPC .First , I flow the guide Server .
My development environment:
JDK 11.0.16
Maven configuration:
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<akka.grpc.version>2.3.0</akka.grpc.version>
<grpc.version>1.48.1</grpc.version>
<project.encoding>UTF-8</project.encoding>
</properties>
<dependencies>
<dependency>
<groupId>com.lightbend.akka.grpc</groupId>
<artifactId>akka-grpc-runtime_2.12</artifactId>
<version>${akka.grpc.version}</version>
</dependency>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>3.21.9</version>
</dependency>
<dependency>
<groupId>com.thesamet.scalapb</groupId>
<artifactId>scalapb-runtime_2.12</artifactId>
<version>0.11.11</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-discovery_2.12</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-http-core_2.12</artifactId>
<version>10.5.0-M1</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-http_2.12</artifactId>
<version>10.5.0-M1</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-stream_2.12</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-core</artifactId>
<version>1.48.1</version>
</dependency>
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-netty-shaded</artifactId>
<version>1.48.1</version>
</dependency>
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-protobuf</artifactId>
<version>1.48.1</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.12.17</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.lightbend.akka.grpc</groupId>
<artifactId>akka-grpc-maven-plugin</artifactId>
<version>${akka.grpc.version}</version>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
proto file : src/main/java/proto/helloworld.proto
When I use “mvn akka-grpc:generate” command , the problem is
[WARNING] Error injecting: akka.grpc.maven.GenerateMojo
java.lang.NoClassDefFoundError: scala/math/Ordering
at java.lang.Class.getDeclaredConstructors0 (Native Method)
at java.lang.Class.privateGetDeclaredConstructors (Class.java:3137)
at java.lang.Class.getDeclaredConstructors (Class.java:2357)
at com.google.inject.spi.InjectionPoint.forConstructorOf (InjectionPoint.java:245)
at com.google.inject.internal.ConstructorBindingImpl.create (ConstructorBindingImpl.java:115)
at com.google.inject.internal.InjectorImpl.createUninitializedBinding (InjectorImpl.java:706)
at com.google.inject.internal.InjectorImpl.createJustInTimeBinding (InjectorImpl.java:930)
at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive (InjectorImpl.java:852)
at com.google.inject.internal.InjectorImpl.getJustInTimeBinding (InjectorImpl.java:291)
at com.google.inject.internal.InjectorImpl.getBindingOrThrow (InjectorImpl.java:222)
at com.google.inject.internal.InjectorImpl.getProviderOrThrow (InjectorImpl.java:1040)
at com.google.inject.internal.InjectorImpl.getProvider (InjectorImpl.java:1071)
at com.google.inject.internal.InjectorImpl.getProvider (InjectorImpl.java:1034)
at com.google.inject.internal.InjectorImpl.getInstance (InjectorImpl.java:1086)
at org.eclipse.sisu.space.AbstractDeferredClass.get (AbstractDeferredClass.java:48)
at com.google.inject.internal.ProviderInternalFactory.provision (ProviderInternalFactory.java:85)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision (InternalFactoryToInitializableAdapter.java:57)
at com.google.inject.internal.ProviderInternalFactory$1.call (ProviderInternalFactory.java:66)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision (ProvisionListenerStackCallback.java:112)
at org.eclipse.sisu.bean.BeanScheduler$CycleActivator.onProvision (BeanScheduler.java:230)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision (ProvisionListenerStackCallback.java:120)
at com.google.inject.internal.ProvisionListenerStackCallback.provision (ProvisionListenerStackCallback.java:66)
at com.google.inject.internal.ProviderInternalFactory.circularGet (ProviderInternalFactory.java:61)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.get (InternalFactoryToInitializableAdapter.java:47)
at com.google.inject.internal.ProviderToInternalFactoryAdapter.get (ProviderToInternalFactoryAdapter.java:40)
at com.google.inject.internal.SingletonScope$1.get (SingletonScope.java:168)
at com.google.inject.internal.InternalFactoryToProviderAdapter.get (InternalFactoryToProviderAdapter.java:39)
at com.google.inject.internal.InjectorImpl$1.get (InjectorImpl.java:1050)
at org.eclipse.sisu.inject.LazyBeanEntry.getValue (LazyBeanEntry.java:81)
at org.eclipse.sisu.plexus.LazyPlexusBean.getValue (LazyPlexusBean.java:51)
at org.codehaus.plexus.DefaultPlexusContainer.lookup (DefaultPlexusContainer.java:263)
at org.codehaus.plexus.DefaultPlexusContainer.lookup (DefaultPlexusContainer.java:255)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo (DefaultMavenPluginManager.java:520)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:124)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:566)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
Please,how to solve it . Wait your reply 
4 posts - 2 participants