使用vertx 4.0.0与jdk 14。当尝试使用顶点web客户端进行REST请求时，我得到以下异常:
15:56:48.294 [vert.x-eventloop-thread-0] ERROR io.vertx.core.impl.ContextImpl - Unhandled exception
java.lang.IllegalAccessError: class io.vertx.core.buffer.impl.VertxUnsafeHeapByteBuf cannot access its superclass io.netty.buffer.UnpooledUnsafeHeapByteBuf (io.vertx.core.buffer.impl.VertxUnsafeHeapByteBuf and io.netty.buffer.UnpooledUnsafeHeapByteBuf are in unnamed module of loader 'app')
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:?]
at java.lang.ClassLoader.defineClass(ClassLoader.java:1017) ~[?:?]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151) ~[?:?]
at jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:821) ~[?:?]
at jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:719) ~[?:?]
at jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:642) ~[?:?]
at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:600) ~[?:?]
at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[?:?]
at io.vertx.core.buffer.impl.VertxByteBufAllocator.<clinit>(VertxByteBufAllocator.java:20) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.buffer.impl.BufferImpl.<init>(BufferImpl.java:64) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.buffer.impl.BufferImpl.<init>(BufferImpl.java:60) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.buffer.impl.BufferImpl.buffer(BufferImpl.java:38) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.buffer.Buffer.buffer(Buffer.java:49) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.ext.web.codec.impl.BodyCodecImpl$1.<init>(BodyCodecImpl.java:88) ~[vertx-web-common-4.0.0.jar:4.0.0]
at io.vertx.ext.web.codec.impl.BodyCodecImpl.create(BodyCodecImpl.java:86) ~[vertx-web-common-4.0.0.jar:4.0.0]
at io.vertx.ext.web.client.impl.HttpContext.handleReceiveResponse(HttpContext.java:427) ~[vertx-web-client-4.0.0.jar:4.0.0]
at io.vertx.ext.web.client.impl.HttpContext.execute(HttpContext.java:338) ~[vertx-web-client-4.0.0.jar:4.0.0]
at io.vertx.ext.web.client.impl.HttpContext.next(HttpContext.java:322) ~[vertx-web-client-4.0.0.jar:4.0.0]
at io.vertx.ext.web.client.impl.HttpContext.fire(HttpContext.java:289) ~[vertx-web-client-4.0.0.jar:4.0.0]
at io.vertx.ext.web.client.impl.HttpContext.receiveResponse(HttpContext.java:238) ~[vertx-web-client-4.0.0.jar:4.0.0]
at io.vertx.ext.web.client.impl.HttpContext.lambda$null$13(HttpContext.java:564) ~[vertx-web-client-4.0.0.jar:4.0.0]
at io.vertx.core.impl.future.FutureImpl$3.onSuccess(FutureImpl.java:125) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:61) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:180) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.impl.future.PromiseImpl.tryComplete(PromiseImpl.java:23) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.Promise.complete(Promise.java:66) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.HttpClientRequestImpl.handleResponse(HttpClientRequestImpl.java:350) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.HttpClientRequestBase.handleResponse(HttpClientRequestBase.java:185) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.HttpClientRequestBase.lambda$new$0(HttpClientRequestBase.java:71) ~[vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:52) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.impl.ContextImpl.emit(ContextImpl.java:294) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:24) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.Http1xClientConnection$StreamImpl.handleHead(Http1xClientConnection.java:537) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.Http1xClientConnection.handleResponseBegin(Http1xClientConnection.java:695) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.Http1xClientConnection.handleHttpMessage(Http1xClientConnection.java:628) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.http.impl.Http1xClientConnection.handleMessage(Http1xClientConnection.java:602) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.net.impl.ConnectionBase.read(ConnectionBase.java:151) [vertx-core-4.0.0.jar:4.0.0]
at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:144) [vertx-core-4.0.0.jar:4.0.0]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:426) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:278) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1476) [netty-handler-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1225) [netty-handler-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1272) [netty-handler-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:502) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:441) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:278) [netty-codec-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1408) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:930) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:677) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:612) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:529) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:491) [netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) [netty-common-4.1.34.Final.jar:4.1.34.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.34.Final.jar:4.1.34.Final]
at java.lang.Thread.run(Thread.java:832) [?:?]
仔细观察错误，似乎确实是Vertx类VertxUnsafeHeapByteBuf继承了Netty类UnpooledUnsafeHeapByteBuf，后者具有包级访问级别。(换句话说，它不是一个公共类)Netty库版本maven将其解析为"4.1.34. final"。
我试图排除这个版本的Netty库，并使用具有UnpooledUnsafeHeapByteBuf类和公共访问器的新版本。所以我使用了&;4.1.58. final &;这是最新的，虽然我不再得到IllegalAccessError不幸的是，它仍然不能与以下堆栈跟踪工作:
io.netty.resolver.dns.DnsResolveContext$SearchDomainUnknownHostException: Search domain query failed. Original hostname: 'usapi.alibaba.com' failed to resolve 'usapi.alibaba.com' after 2 queries
at io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:877)
at io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:838)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:333)
at io.netty.resolver.dns.DnsResolveContext.access$600(DnsResolveContext.java:63)
at io.netty.resolver.dns.DnsResolveContext$3.operationComplete(DnsResolveContext.java:382)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:502)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:476)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:415)
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:152)
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:33)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:357)
at io.netty.resolver.dns.DnsResolveContext.access$600(DnsResolveContext.java:63)
at io.netty.resolver.dns.DnsResolveContext$3.operationComplete(DnsResolveContext.java:382)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:502)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:476)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:415)
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:152)
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:33)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:357)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:951)
at io.netty.resolver.dns.DnsResolveContext.internalResolve(DnsResolveContext.java:270)
at io.netty.resolver.dns.DnsResolveContext.doSearchDomainQuery(DnsResolveContext.java:245)
at io.netty.resolver.dns.DnsAddressResolveContext.doSearchDomainQuery(DnsAddressResolveContext.java:98)
at io.netty.resolver.dns.DnsResolveContext.resolve(DnsResolveContext.java:212)
at io.netty.resolver.dns.DnsNameResolver.doResolveAllUncached0(DnsNameResolver.java:995)
at io.netty.resolver.dns.DnsNameResolver.doResolveAllUncached(DnsNameResolver.java:974)
at io.netty.resolver.dns.DnsNameResolver.doResolveUncached(DnsNameResolver.java:879)
at io.netty.resolver.dns.DnsNameResolver.doResolve(DnsNameResolver.java:829)
at io.netty.resolver.dns.DnsNameResolver.doResolve(DnsNameResolver.java:672)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
at io.netty.resolver.dns.InflightNameResolver.resolve(InflightNameResolver.java:100)
at io.netty.resolver.dns.InflightNameResolver.resolve(InflightNameResolver.java:66)
at io.netty.resolver.dns.InflightNameResolver.resolve(InflightNameResolver.java:51)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:170)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:145)
at io.vertx.core.net.impl.ChannelProvider.handleConnect(ChannelProvider.java:137)
at io.vertx.core.net.impl.ChannelProvider.connect(ChannelProvider.java:90)
at io.vertx.core.net.impl.ChannelProvider.connect(ChannelProvider.java:76)
at io.vertx.core.http.impl.HttpChannelConnector.doConnect(HttpChannelConnector.java:145)
at io.vertx.core.http.impl.HttpChannelConnector.connect(HttpChannelConnector.java:120)
at io.vertx.core.net.impl.clientconnection.Pool$Holder.connect(Pool.java:126)
at io.vertx.core.net.impl.clientconnection.Pool.checkPendingTasks(Pool.java:243)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:495)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: io.netty.resolver.dns.DnsNameResolverException: [/8.8.4.4:53] failed to send a query (no stack trace available)
Caused by: io.netty.handler.codec.EncoderException: java.lang.NoClassDefFoundError: io/netty/util/internal/ObjectPool$ObjectCreator
at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:107)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:706)
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:753)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:778)
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:747)
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1031)
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:310)
at io.netty.resolver.dns.DnsQueryContext.writeQuery(DnsQueryContext.java:139)
at io.netty.resolver.dns.DnsQueryContext.sendQuery(DnsQueryContext.java:118)
at io.netty.resolver.dns.DnsQueryContext.query(DnsQueryContext.java:113)
at io.netty.resolver.dns.DnsNameResolver.query0(DnsNameResolver.java:1109)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:351)
at io.netty.resolver.dns.DnsResolveContext.access$600(DnsResolveContext.java:63)
at io.netty.resolver.dns.DnsResolveContext$3.operationComplete(DnsResolveContext.java:382)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:502)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:476)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:415)
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:152)
at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:33)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:357)
at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:951)
at io.netty.resolver.dns.DnsResolveContext.internalResolve(DnsResolveContext.java:270)
at io.netty.resolver.dns.DnsResolveContext.doSearchDomainQuery(DnsResolveContext.java:245)
at io.netty.resolver.dns.DnsAddressResolveContext.doSearchDomainQuery(DnsAddressResolveContext.java:98)
at io.netty.resolver.dns.DnsResolveContext.resolve(DnsResolveContext.java:212)
at io.netty.resolver.dns.DnsNameResolver.doResolveAllUncached0(DnsNameResolver.java:995)
at io.netty.resolver.dns.DnsNameResolver.doResolveAllUncached(DnsNameResolver.java:974)
at io.netty.resolver.dns.DnsNameResolver.doResolveUncached(DnsNameResolver.java:879)
at io.netty.resolver.dns.DnsNameResolver.doResolve(DnsNameResolver.java:829)
at io.netty.resolver.dns.DnsNameResolver.doResolve(DnsNameResolver.java:672)
at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
at io.netty.resolver.dns.InflightNameResolver.resolve(InflightNameResolver.java:100)
at io.netty.resolver.dns.InflightNameResolver.resolve(InflightNameResolver.java:66)
at io.netty.resolver.dns.InflightNameResolver.resolve(InflightNameResolver.java:51)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208)
at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:170)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:145)
at io.vertx.core.net.impl.ChannelProvider.handleConnect(ChannelProvider.java:137)
at io.vertx.core.net.impl.ChannelProvider.connect(ChannelProvider.java:90)
at io.vertx.core.net.impl.ChannelProvider.connect(ChannelProvider.java:76)
at io.vertx.core.http.impl.HttpChannelConnector.doConnect(HttpChannelConnector.java:145)
at io.vertx.core.http.impl.HttpChannelConnector.connect(HttpChannelConnector.java:120)
at io.vertx.core.net.impl.clientconnection.Pool$Holder.connect(Pool.java:126)
at io.vertx.core.net.impl.clientconnection.Pool.checkPendingTasks(Pool.java:243)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:495)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.NoClassDefFoundError: io/netty/util/internal/ObjectPool$ObjectCreator
at io.netty.buffer.PoolThreadCache.createSubPageCaches(PoolThreadCache.java:117)
at io.netty.buffer.PoolThreadCache.<init>(PoolThreadCache.java:74)
at io.netty.buffer.PooledByteBufAllocator$PoolThreadLocalCache.initialValue(PooledByteBufAllocator.java:499)
at io.netty.buffer.PooledByteBufAllocator$PoolThreadLocalCache.initialValue(PooledByteBufAllocator.java:483)
at io.netty.util.concurrent.FastThreadLocal.initialize(FastThreadLocal.java:188)
at io.netty.util.concurrent.FastThreadLocal.get(FastThreadLocal.java:142)
at io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:373)
at io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:187)
at io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:178)
at io.netty.buffer.AbstractByteBufAllocator.ioBuffer(AbstractByteBufAllocator.java:139)
at io.netty.handler.codec.dns.DatagramDnsQueryEncoder.allocateBuffer(DatagramDnsQueryEncoder.java:86)
at io.netty.handler.codec.dns.DatagramDnsQueryEncoder.encode(DatagramDnsQueryEncoder.java:62)
at io.netty.handler.codec.dns.DatagramDnsQueryEncoder.encode(DatagramDnsQueryEncoder.java:35)
at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:89)
... 52 more
Caused by: java.lang.ClassNotFoundException: io.netty.util.internal.ObjectPool$ObjectCreator
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 66 more
直到垂直。X将发布此问题的修复程序。目前，Aniket Sahrawat提出的建议解决了这个问题。即在您的POM文件中包含以下依赖项:
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.48.Final</version>
</dependency>
从最后的堆栈跟踪来看，在类路径上有多个netty版本。确保它们都具有相同的版本(在本例中为4.1.58.Final)。