在Spring Boot中使用Corda RPC API会引发IllegalArgumentException [英] Using Corda RPC API in Spring Boot throws IllegalArgumentException

问题描述

我有一个类似于这一个的多模块项目。

I have a multimodule project similar to this one.

我正在使用Corda 3.2，没有Kotlin的Spring Boot 2，并且由于cordformation，我有一组Corda节点可以运行。我可以从Spring Boot应用程序成功连接到节点，但是在尝试获取nodeInfo时遇到了麻烦。

I'm using Corda 3.2, Spring Boot 2 without Kotlin and I have a set of Corda nodes running thanks to cordformation. I'm able to connect successfully to a node from my Spring Boot app, but getting into to trouble when trying to, for example, get nodeInfo.

我看到了类似的情况问题此处。但是，清除缓存的答案让我感到困惑。这是否意味着清除gradle的缓存？

I saw a similar question here. But the answer to "clear caches" there is confusing to me. Does it mean to clear gradle's cache? How would that help?

这是我的堆栈跟踪记录：

Here's my stack trace:

com.esotericsoftware.kryo.KryoException: java.lang.IllegalArgumentException: Privacy salt should be 32 bytes.
Serialization trace:
legalIdentitiesAndCerts (net.corda.core.node.NodeInfo)
value (net.corda.core.utilities.Try$Success)
    at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:144) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.serializers.CompatibleFieldSerializer.read(CompatibleFieldSerializer.java:147) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.serializers.CompatibleFieldSerializer.read(CompatibleFieldSerializer.java:147) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:813) ~[kryo-4.0.0.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme$deserialize$$inlined$use$lambda$1$1.invoke(KryoSerializationScheme.kt:97) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme$deserialize$$inlined$use$lambda$1$1.invoke(KryoSerializationScheme.kt:37) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme.withContext(KryoSerializationScheme.kt:80) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme.access$withContext(KryoSerializationScheme.kt:37) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme$deserialize$$inlined$use$lambda$1.execute(KryoSerializationScheme.kt:95) ~[corda-node-api-3.2-corda.jar:na]
    at com.esotericsoftware.kryo.pool.KryoPoolQueueImpl.run(KryoPoolQueueImpl.java:61) ~[kryo-4.0.0.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.AbstractKryoSerializationScheme.deserialize(KryoSerializationScheme.kt:94) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$deserialize$1$1.invoke(SerializationScheme.kt:111) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.core.serialization.SerializationFactory.withCurrentContext(SerializationAPI.kt:66) ~[corda-core-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$deserialize$1.invoke(SerializationScheme.kt:111) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl$deserialize$1.invoke(SerializationScheme.kt:86) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.core.serialization.SerializationFactory.asCurrent(SerializationAPI.kt:80) ~[corda-core-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.SerializationFactoryImpl.deserialize(SerializationScheme.kt:111) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.RPCApi$ServerToClient$Companion.fromClientMessage(RPCApi.kt:360) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.client.rpc.internal.RPCClientProxyHandler.artemisMessageHandler(RPCClientProxyHandler.kt:256) ~[corda-rpc-3.2-corda.jar:na]
    at net.corda.client.rpc.internal.RPCClientProxyHandler.access$artemisMessageHandler(RPCClientProxyHandler.kt:69) ~[corda-rpc-3.2-corda.jar:na]
    at net.corda.client.rpc.internal.RPCClientProxyHandler$start$2.invoke(RPCClientProxyHandler.kt:197) ~[corda-rpc-3.2-corda.jar:na]
    at net.corda.client.rpc.internal.RPCClientProxyHandler$start$2.invoke(RPCClientProxyHandler.kt:69) ~[corda-rpc-3.2-corda.jar:na]
    at net.corda.client.rpc.internal.RPCClientProxyHandlerKt$sam$MessageHandler$6fb61eb3.onMessage(RPCClientProxyHandler.kt) ~[corda-rpc-3.2-corda.jar:na]
    at org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.callOnMessage(ClientConsumerImpl.java:1003) ~[artemis-core-client-2.4.0.jar:2.4.0]
    at org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl.access$400(ClientConsumerImpl.java:50) ~[artemis-core-client-2.4.0.jar:2.4.0]
    at org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl$Runner.run(ClientConsumerImpl.java:1126) ~[artemis-core-client-2.4.0.jar:2.4.0]
    at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:42) [artemis-commons-2.4.0.jar:2.4.0]
    at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:31) [artemis-commons-2.4.0.jar:2.4.0]
    at org.apache.activemq.artemis.utils.actors.ProcessorBase$ExecutorTask.run(ProcessorBase.java:53) [artemis-commons-2.4.0.jar:2.4.0]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
Caused by: java.lang.IllegalArgumentException: Privacy salt should be 32 bytes.
    at net.corda.core.contracts.PrivacySalt.(Structures.kt:303) ~[corda-core-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.DefaultKryoCustomizer$PrivacySaltSerializer.read(DefaultKryoCustomizer.kt:197) ~[corda-node-api-3.2-corda.jar:na]
    at net.corda.nodeapi.internal.serialization.kryo.DefaultKryoCustomizer$PrivacySaltSerializer.read(DefaultKryoCustomizer.kt:191) ~[corda-node-api-3.2-corda.jar:na]
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:813) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731) ~[kryo-4.0.0.jar:na]
    at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125) ~[kryo-4.0.0.jar:na]
    ... 33 common frames omitted

对于我来说，需要32个字节长的隐私盐是56个字节。 / p>

The privacy salt that needed to be 32 bytes long was 56 bytes for me.

推荐答案

发生错误的原因不是Gradle版本太新。
这是因为我的Spring Boot应用程序具有26.0版的Guava依赖性，而Corda 3.2的版本是21.0。

The reason for the error was not too new Gradle version. It came from the fact that my Spring Boot app had Guava dependency with version 26.0, but Corda 3.2 has version 21.0.

与此相关的Stackoverflow问题是<一个href = https://stackoverflow.com/questions/50639058/in-corda-kryoexception-encountered-unregistered-class-id-despite-registering>在Corda中， KryoException：尽管注册了类，却遇到了未注册的类ID。 / a>

Related Stackoverflow question regarding this is In Corda, `KryoException: Encountered unregistered class ID` despite registering classes

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