Java grpc和tikv Java:NoSuchFieldError:CONTEXT\u SPAN\u键
我将java grpc与tikv java一起使用(它们单独工作正常)。但我正与以下错误作斗争:Java grpc和tikv Java:NoSuchFieldError:CONTEXT\u SPAN\u键,java,maven,grpc,grpc-java,tikv,Java,Maven,Grpc,Grpc Java,Tikv,我将java grpc与tikv java一起使用(它们单独工作正常)。但我正与以下错误作斗争: Exception in thread "main" java.lang.NoSuchFieldError: CONTEXT_SPAN_KEY at io.grpc.internal.CensusTracingModule$TracingClientInterceptor.interceptCall(CensusTracingModule.java:327) at i
Exception in thread "main" java.lang.NoSuchFieldError: CONTEXT_SPAN_KEY
at io.grpc.internal.CensusTracingModule$TracingClientInterceptor.interceptCall(CensusTracingModule.java:327)
at io.grpc.ClientInterceptors$InterceptorChannel.newCall(ClientInterceptors.java:104)
at io.grpc.internal.ManagedChannelImpl.newCall(ManagedChannelImpl.java:551)
at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:113)
at com.pv.app.GetInsertServiceGrpc$GetInsertServiceBlockingStub.insert(GetInsertServiceGrpc.java:195)
at com.pv.app.Client.main(Client.java:55)
我的代码客户端:
package com.pv.app;
import io.grpc.*;
public class Client {
public static void main(String[] args) throws Exception {
// Channel is the abstraction to connect to a service endpoint
// Let's use plaintext communication because we don't have certs
final ManagedChannel channel =
ManagedChannelBuilder.forTarget("0.0.0.0:8080").usePlaintext().build();
GetInsertServiceGrpc.GetInsertServiceBlockingStub stub =
GetInsertServiceGrpc.newBlockingStub(channel);
GetInsertServiceOuterClass.HelloMessage request =
GetInsertServiceOuterClass.HelloMessage.newBuilder().setName("hello").build();
System.out.println(request);
System.out.println("b4 req");
// Finally, make the call using the stub
stub.insert(request);
channel.shutdownNow();
}
}
我的代码服务器:
package com.pv.app;
import io.grpc.Server;
import io.grpc.ServerBuilder;
/** Hello world! */
public class App {
public static void main(String[] args) throws Exception {
System.out.println("Hello-start");
Server server = ServerBuilder.forPort(8080).addService(new GetInsertServiceImpl()).build();
// Start the server
server.start();
// Server threads are running in the background.
System.out.println("Server started");
// Don't exit the main thread. Wait until server is terminated.
server.awaitTermination();
}
}
我的代码实现:
package com.pv.app;
import org.tikv.common.TiConfiguration;
import org.tikv.common.TiSession;
import org.tikv.raw.RawKVClient;
public class GetInsertServiceImpl
extends GetInsertServiceGrpc.GetInsertServiceImplBase {
@Override
public void insert(
GetInsertServiceOuterClass.HelloMessage request,
io.grpc.stub.StreamObserver<com.google.protobuf.Empty> responseObserver) {
// HelloRequest has toString auto-generated.
System.out.println("insert");
System.out.println(request);
TiConfiguration conf = TiConfiguration.createRawDefault("pd0:2379");
System.out.println(1);
System.out.println("2");
System.out.println(conf);
TiSession session = TiSession.create(conf);
System.out.println("3");
RawKVClient client = session.createRawClient();
System.out.println("4");
// When you are done, you must call onCompleted.
responseObserver.onCompleted();
}
}
我如何部署:
- 在下载的repo中,我执行mvn清理安装-Dmaven.test.skip=true
- 在我的项目文件夹中
- 在我的项目pom.xml中
我进行了搜索,试图排除grpc和opencensus,切换版本-没有帮助。问题是由io冲突引起的。opencensus版本。我能够通过在tikv/client java项目中对其进行着色来修复它 在tikv/client java、pom.xml、maven shade插件配置中:
<relocations>
...
<relocation>
<pattern>io.opencensus</pattern>
<shadedPattern>shade.io.opencensus</shadedPattern>
</relocation>
<relocations>
...
开放式普查
shade.io.opencensus
更新
我刚刚意识到pom.xml昨天被合并到master中,所以如果您还没有更新它,您可能需要更新它
更新2
我刚刚用最新版本的tikv/client-java检查了您的项目。
NoSuchFieldError:CONTEXT\u SPAN\u键
不见了。还有其他错误(java.net.UnknownHostException),但它们并不相关。这看起来像是一个依赖性问题。您能否启用Maven Enforcer的requireUpperBoundDeps并查看它发现了哪些问题?为了example@EricAnderson[INFO]——maven enforcer插件:1.4.1:enforce(enforce)@tikv连接器--[INFO]
。没有输出…@Eric Anderson这里是项目的链接,我想这与grpc和tikv java库的依赖关系有一些冲突。我试图从另一个中排除一个(shade插件对一些重复项给出了警告),但没有帮助TIKV客户端java是标准库吗?因为我无法获得maven repository,可用的maven repo是:com.pingcap.tikv tikv client 2.0,正如@Mafor所说,io.opencensus
冲突导致了问题tikv java客户端
将其grpc版本升级到1.17.0,并带来了这个问题,因为它没有着色。有一个PR将其修复并合并到master@techkuz您可以在此处查看:
mvn install:install-file \
-Dfile=../client-java/target/tikv-client-java-2.0-SNAPSHOT.jar \
-DgroupId=org.tikv \
-DartifactId=tikv-client-java \
-Dversion=2.0-SNAPSHOT \
-Dpackaging=jar
<dependency>
<groupId>org.tikv</groupId>
<artifactId>tikv-client-java</artifactId>
<version>2.0-SNAPSHOT</version>
</dependency>
mvn -DskipTests package exec:java -Dexec.mainClass=com.pv.app.App
mvn -DskipTests package exec:java -Dexec.mainClass=com.pv.app.Client
<relocations>
...
<relocation>
<pattern>io.opencensus</pattern>
<shadedPattern>shade.io.opencensus</shadedPattern>
</relocation>
<relocations>