面对带有grpc和protobuf的io.netty.util.AttributeKey.valueOf（）方法的NoSuchMethodError Hello world示例

本文介绍了面对带有grpc和protobuf的io.netty.util.AttributeKey.valueOf（）方法的NoSuchMethodError Hello world示例的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述

运行GreetingServerTest.java测试后，我遇到了错误。我正在使用grpc 1.1.0-SNAPSHOT库并尝试实现git repo中给出的grpc的基本Helloword示例。任何人都可以建议我缺少哪些库或者我需要做什么。
  java.lang.NoSuchMethodError：io。 netty.util.AttributeKey.valueOf（Ljava /郎/类; Ljava /郎/字符串;）LIO /网状/ util的/ AttributeKey; 
 at io.grpc.netty.Utils。< clinit>（Utils.java:87）
 at io.grpc.netty.NettyServer.allocateSharedGroups（NettyServer.java:187) 
 at io.grpc.netty.NettyServer.start（NettyServer.java:116）
 at io.grpc.internal.ServerImpl.start（ServerImpl.java:156）
 at io.grpc.internal.ServerImpl。在com.xyz.communication.datacollection.GrpcServerTest.test（GrpcServerTest.java:23）
   $ b  pom.xml 
 < project xmlns =http：//maven.apache .org / POM / 4.0.0xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://maven.apache.org/POM /4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\"> 
< modelVersion> 4.0.0< / modelVersion> 
< groupId> org.springframework.samples< / groupId> 
< artifactId> InternodeCommunication< / artifactId> 
< version> 0.0.1-SNAPSHOT< / version> 
 
< properties> 
< java.version> 1.8< /java.version> 
< project.build.sourceEncoding> UTF-8< /project.build.sourceEncoding> 
< project.reporting.outputEncoding> UTF-8< /project.reporting.outputEncoding> 
 
<！ - 春天 - > 
< spring-framework.version> 4.3.1.RELEASE< /spring-framework.version> 
 
<！ - 记录 - > 
< logback.version> 1.0.13< /logback.version> 
< slf4j.version> 1.7.5< /slf4j.version> 
 
<！ -  Kundera JPA  - > 
< kundera-version> 3.4< / kundera-version> 
 
<！ -  Hibernate jpa  - > 
< hibernate.version> 4.2.1.Final< /hibernate.version> 
 
 
<！ - 测试 - > 
< junit.version> 4.12< /junit.version> 
< grpc.version> 1.1.0-SNAPSHOT< /grpc.version> 
<！ - 通用属性 - > 
< / properties> 
 
< dependencies> 
<！ -  Spring and Transactions  - > 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-context< / artifactId> 
< version> $ {spring-framework.version}< / version> 
< / dependency> 
 
<！ -  Hibernate  - > 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-entitymanager< / artifactId> 
< version> $ {hibernate.version}< / version> 
< / dependency> 
<！ -  kafka  - > 
<！ -  https://mvnrepository.com/artifact/org.apache.kafka/kafka_2.10  - > 
< dependency> 
< groupId> org.apache.kafka< / groupId> 
< artifactId> kafka_2.10< / artifactId> 
< version> 0.10.0.0< / version> 
< exclusions> 
< exclusion> 
< groupId> org.slf4j< / groupId> 
< artifactId> slf4j-log4j12< / artifactId> 
< / exclusion> 
< exclusion> 
< groupId> log4j< / groupId> 
< artifactId> log4j< / artifactId> 
< / exclusion> 
< / exclusions> 
 
< / dependency> 
< dependency> 
< groupId> com.xyz< / groupId> 
< artifactId> Common< / artifactId> 
< version> 0.0.1-SNAPSHOT< / version> 
< / dependency> 
< dependency> 
< groupId> com.google.guava< / groupId> 
< artifactId> guava< / artifactId> 
< version> 18.0< / version> 
< / dependency> 
< dependency> 
< groupId> io.netty< / groupId> 
< artifactId> netty-all< / artifactId> 
< version> 4.1.5.Final< / version> 
< / dependency> 
< dependency> 
< groupId> com.google.protobuf< / groupId> 
< artifactId> protobuf-java< / artifactId> 
< version> 3.0.0< / version> 
< / dependency> 
< dependency> 
< groupId> io.grpc< / groupId> 
< artifactId> grpc-netty< / artifactId> 
< version> $ {grpc.version}< / version> 
< / dependency> 
< dependency> 
< groupId> io.grpc< / groupId> 
< artifactId> grpc-protobuf< / artifactId> 
< version> $ {grpc.version}< / version> 
< / dependency> 
< dependency> 
< groupId> io.grpc< / groupId> 
< artifactId> grpc-stub< / artifactId> 
< version> $ {grpc.version}< / version> 
< / dependency> 
<！ -  https://mvnrepository.com/artifact/io.grpc/grpc-all  - > 
<！ -  https://mvnrepository.com/artifact/io.netty/netty-codec  - > 
<！ -  https://mvnrepository.com/artifact/io.netty/netty-all  - > 
 
 
 
 
<！ - 测试工件 - > 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-test< / artifactId> 
< version> $ {spring-framework.version}< / version> 
< scope> test< / scope> 
< / dependency> 
< dependency> 
< groupId> junit< / groupId> 
< artifactId> junit< / artifactId> 
< version> $ {junit.version}< / version> 
< / dependency> 
< dependency> 
< groupId> com.xyz< / groupId> 
< artifactId> Common< / artifactId> 
< version> 0.0.1-SNAPSHOT< / version> 
< type> test-jar< / type> 
< scope> test< / scope> 
< / dependency> 
 
< / dependencies> 
< build> 
< extensions> 
< extension> 
< groupId> kr.motd.maven< / groupId> 
< artifactId> os-maven-plugin< / artifactId> 
< version> 1.4.1.Final< / version> 
< / extension> 
< / extensions> 
< plugins> 
< plugin> 
< groupId> org.xolstice.maven.plugins< / groupId> 
< artifactId> protobuf-maven-plugin< / artifactId> 
< version> 0.5.0< / version> 
< configuration> 
<！ -  protoc的版本必须与protobuf-java匹配。如果你不直接在protobuf-java上依赖
，那么你将依赖于grpc所依赖的protobuf-java 
版本。 - > 
< protocArtifact> com.google.protobuf：protoc：3.0.0：exe：$ {os.detected.classifier}< / protocArtifact> 
< pluginId> grpc-java< / pluginId> 
< pluginArtifact> io.grpc：protoc-gen-grpc-java：1.1.0-SNAPSHOT：exe：$ {os.detected.classifier}< / pluginArtifact> 
< / configuration> 
< executions> 
< execution> 
< goals> 
< goal> compile< / goal> 
< goal> compile-custom< / goal> 
< / goals> 
< / execution> 
< / executions> 
< / plugin> 
< / plugins> 
< / build> 
  
 
 
  hello_world.proto file 
  syntax =proto3; 
选项java_multiple_files = true; 
 package com.xyz.communication.example; 
消息HelloRequest {
 string name = 1; 
} 
消息HelloResponse {
 string greeting = 1; 
} 
服务GreetingService {
 rpc greeting（HelloRequest）返回（HelloResponse）; 
} 
  
 GreetingServerTest.java 
  @ContextConfiguration（/ communication-test-beans.xml）
 @RunWith（SpringJUnit4ClassRunner.class）
 public class GrpcServerTest {
 @Test 
 public void test（）抛出IOException，InterruptedException {
 io.grpc.Server server = ServerBuilder.forPort（8080）.addService（new GrpcServerImpl（）。bindService（））。build（）; 
 server.start（）; 
 server.awaitTermination（）; 
} 
} 
 
类GrpcServerImpl扩展GreetingServiceGrpc.GreetingServiceImplBase {
 @Override 
 public void greeting（HelloRequest request，StreamObserver< HelloResponse> responseObserver）{
 HelloResponse response = HelloResponse.newBuilder（）。setGreeting（Hello+ request.getName（））。build（）; 
 responseObserver.onNext（回复）; 
 responseObserver.onCompleted（）; 
} 
 
 @Override 
 public ServerServiceDefinition bindService（）{
 return super.bindService（）; 
} 
} 
  
 
 
解决方案
那里在运行时期间，您可以在类路径中使用多个版本的netty jar。使用以下命令检查依赖关系树。
  mvn dependency：tree -Dverbose 
  
或者您的容器提供的netty jar可能与您使用应用程序打包的jar版本发生冲突。
 
After running GreetingServerTest.java tests I am getting below given errors. I am using grpc 1.1.0-SNAPSHOT libraries and trying to implement basic Helloword example of grpc given in there git repo. Can anybody please suggest which libraries I am missing or there's anything else I need to do.
java.lang.NoSuchMethodError: io.netty.util.AttributeKey.valueOf(Ljava/lang/Class;Ljava/lang/String;)Lio/netty/util/AttributeKey;
at io.grpc.netty.Utils.<clinit>(Utils.java:87)
at io.grpc.netty.NettyServer.allocateSharedGroups(NettyServer.java:187)
at io.grpc.netty.NettyServer.start(NettyServer.java:116)
at io.grpc.internal.ServerImpl.start(ServerImpl.java:156)
at io.grpc.internal.ServerImpl.start(ServerImpl.java:83)
at com.xyz.communication.datacollection.GrpcServerTest.test(GrpcServerTest.java:23)
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework.samples</groupId>
<artifactId>InternodeCommunication</artifactId>
<version>0.0.1-SNAPSHOT</version>

<properties>
    <java.version>1.8</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <!-- Spring -->
    <spring-framework.version>4.3.1.RELEASE</spring-framework.version>

    <!-- Logging -->
    <logback.version>1.0.13</logback.version>
    <slf4j.version>1.7.5</slf4j.version>

    <!-- Kundera JPA -->
    <kundera-version>3.4</kundera-version>

    <!-- Hibernate jpa -->
    <hibernate.version>4.2.1.Final</hibernate.version>


    <!-- Test -->
    <junit.version>4.12</junit.version>
    <grpc.version>1.1.0-SNAPSHOT</grpc.version>
    <!-- Generic properties -->
</properties>

<dependencies>
    <!-- Spring and Transactions -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring-framework.version}</version>
    </dependency>

    <!-- Hibernate -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${hibernate.version}</version>
    </dependency>
    <!-- kafka -->
    <!-- https://mvnrepository.com/artifact/org.apache.kafka/kafka_2.10 -->
    <dependency>
        <groupId>org.apache.kafka</groupId>
        <artifactId>kafka_2.10</artifactId>
        <version>0.10.0.0</version>
        <exclusions>
            <exclusion>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
            </exclusion>
            <exclusion>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
            </exclusion>
        </exclusions>

    </dependency>
    <dependency>
        <groupId>com.xyz</groupId>
        <artifactId>Common</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>18.0</version>
    </dependency>
    <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-all</artifactId>
        <version>4.1.5.Final</version>
    </dependency>
    <dependency>
        <groupId>com.google.protobuf</groupId>
        <artifactId>protobuf-java</artifactId>
        <version>3.0.0</version>
    </dependency>
    <dependency>
        <groupId>io.grpc</groupId>
        <artifactId>grpc-netty</artifactId>
        <version>${grpc.version}</version>
    </dependency>
    <dependency>
        <groupId>io.grpc</groupId>
        <artifactId>grpc-protobuf</artifactId>
        <version>${grpc.version}</version>
    </dependency>
    <dependency>
        <groupId>io.grpc</groupId>
        <artifactId>grpc-stub</artifactId>
        <version>${grpc.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/io.grpc/grpc-all -->
    <!-- https://mvnrepository.com/artifact/io.netty/netty-codec -->
    <!-- https://mvnrepository.com/artifact/io.netty/netty-all -->




    <!-- Test Artifacts -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring-framework.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
    </dependency>
    <dependency>
        <groupId>com.xyz</groupId>
        <artifactId>Common</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <type>test-jar</type>
        <scope>test</scope>
    </dependency>

</dependencies>
<build>
    <extensions>
        <extension>
            <groupId>kr.motd.maven</groupId>
            <artifactId>os-maven-plugin</artifactId>
            <version>1.4.1.Final</version>
        </extension>
    </extensions>
    <plugins>
        <plugin>
            <groupId>org.xolstice.maven.plugins</groupId>
            <artifactId>protobuf-maven-plugin</artifactId>
            <version>0.5.0</version>
            <configuration>
                <!-- The version of protoc must match protobuf-java. If you don't depend 
                    on protobuf-java directly, you will be transitively depending on the protobuf-java 
                    version that grpc depends on. -->
                <protocArtifact>com.google.protobuf:protoc:3.0.0:exe:${os.detected.classifier}</protocArtifact>
                <pluginId>grpc-java</pluginId>
                <pluginArtifact>io.grpc:protoc-gen-grpc-java:1.1.0-SNAPSHOT:exe:${os.detected.classifier}</pluginArtifact>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                        <goal>compile-custom</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>
hello_world.proto file
syntax = "proto3";
option java_multiple_files = true;
package com.xyz.communication.example;
message HelloRequest {
 string name = 1;
}
message HelloResponse {
  string greeting = 1;
}
service GreetingService {
   rpc greeting(HelloRequest) returns (HelloResponse);
}
GreetingServerTest.java 
@ContextConfiguration("/communication-test-beans.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class GrpcServerTest {
    @Test
    public void test() throws IOException, InterruptedException {
        io.grpc.Server server = ServerBuilder.forPort(8080).addService(new GrpcServerImpl().bindService()).build();
        server.start();
        server.awaitTermination();
    }
}

class GrpcServerImpl extends GreetingServiceGrpc.GreetingServiceImplBase {
    @Override
    public void greeting(HelloRequest request, StreamObserver<HelloResponse> responseObserver) {
        HelloResponse response = HelloResponse.newBuilder().setGreeting("Hello " + request.getName()).build();
        responseObserver.onNext(response);
        responseObserver.onCompleted();
    }

    @Override
    public ServerServiceDefinition bindService() {
        return super.bindService();
    }
}
 解决方案 
There could be multiple versions of netty jar in you class path during runtime. Use following command to check  dependency tree.
mvn dependency:tree -Dverbose 
Or your container provides the netty jar might be clashing with the version of jar you packaging with your application.
                        这篇关于面对带有grpc和protobuf的io.netty.util.AttributeKey.valueOf（）方法的NoSuchMethodError Hello world示例的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！