bug记录-springcloudgateway报错

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1.背景

启动正常,测试url时到达了规定服务,之后返回响应报错

2,报错内容

2020-05-14 10:03:46.210 ERROR 13024 --- [ctor-http-nio-4] a.w.r.e.AbstractErrorWebExceptionHandler : [e4c94ba]  500 Server Error for HTTP GET "/service/test/student/%E5%B7%A6%E5%B7%A6?token=zuohuihaha"

java.lang.ClassCastException: org.springframework.core.io.buffer.DefaultDataBufferFactory cannot be cast to org.springframework.core.io.buffer.NettyDataBufferFactory
	at org.springframework.cloud.gateway.filter.NettyWriteResponseFilter.lambda$filter$1(NettyWriteResponseFilter.java:82) ~[spring-cloud-gateway-core-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	|_ checkpoint ⇢ org.springframework.web.cors.reactive.CorsWebFilter [DefaultWebFilterChain]
	|_ checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
	|_ checkpoint ⇢ HTTP GET "/service/test/student/%E5%B7%A6%E5%B7%A6?token=zuohuihaha" [ExceptionHandlingWebHandler]
Stack trace:
		at org.springframework.cloud.gateway.filter.NettyWriteResponseFilter.lambda$filter$1(NettyWriteResponseFilter.java:82) ~[spring-cloud-gateway-core-2.2.0.RELEASE.jar:2.2.0.RELEASE]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44) [reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:153) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.ignoreDone(MonoIgnoreThen.java:190) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreInner.onComplete(MonoIgnoreThen.java:240) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onComplete(MonoPeekTerminal.java:292) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.Operators$MonoSubscriber.onComplete(Operators.java:1628) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenAcceptInner.onComplete(MonoIgnoreThen.java:314) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.Operators.complete(Operators.java:132) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoEmpty.subscribe(MonoEmpty.java:45) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) [reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) [reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:153) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.ignoreDone(MonoIgnoreThen.java:190) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreInner.onComplete(MonoIgnoreThen.java:240) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2150) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoFlatMapMany$FlatMapManyMain.onSubscribeInner(MonoFlatMapMany.java:143) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoFlatMapMany$FlatMapManyMain.onNext(MonoFlatMapMany.java:182) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.FluxRetryPredicate$RetryPredicateSubscriber.onNext(FluxRetryPredicate.java:82) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:156) ~[reactor-core-3.3.0.RELEASE.jar:3.3.0.RELEASE]
		at reactor.netty.http.client.HttpClientConnect$HttpObserver.onStateChange(HttpClientConnect.java:397) ~[reactor-netty-0.9.1.RELEASE.jar:0.9.1.RELEASE]
		at reactor.netty.ReactorNetty$CompositeConnectionObserver.onStateChange(ReactorNetty.java:473) ~[reactor-netty-0.9.1.RELEASE.jar:0.9.1.RELEASE]
		at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.onStateChange(PooledConnectionProvider.java:526) ~[reactor-netty-0.9.1.RELEASE.jar:0.9.1.RELEASE]
		at reactor.netty.resources.PooledConnectionProvider$PooledConnection.onStateChange(PooledConnectionProvider.java:435) ~[reactor-netty-0.9.1.RELEASE.jar:0.9.1.RELEASE]
		at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:522) ~[reactor-netty-0.9.1.RELEASE.jar:0.9.1.RELEASE]
		at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:93) ~[reactor-netty-0.9.1.RELEASE.jar:0.9.1.RELEASE]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:326) ~[netty-codec-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:313) ~[netty-codec-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:427) ~[netty-codec-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:281) ~[netty-codec-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1422) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:931) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:700) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:635) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:552) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:514) ~[netty-transport-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
		at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.43.Final.jar:4.1.43.Final]
		at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_181]

3. 解决方法

这是因为springcloud的gateway使用的是webflux,默认使用netty,所以从依赖中排除 tomcat相关的依赖 ，就可以了

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最后编辑时间为: 2020/05/14 10:14