SpringCloudGateway由于版本过低造成的异常报错

本文阅读量: 2019-08-15

背景

Spring Cloud已经不打算集成zuul的2.x版本，并且已基于webflux实现了性能相当不错的Spring Cloud Gateway网关，通过Spring Cloud Gateway 2.x版本与zuul1.x版本做性能对比，发现gateway网关的性能总体表现确实比zuul网关会好一些，从长远考虑，我们线上环境的网关需要从zuul网关切换到Spring Cloud Gateway。下面将给大家介绍一下整个切换过程，与切换过程中遇到了哪些坑。

SpringCloudGateway由于版本过低造成的异常报错

Spring Boot 2.0.0或起初的几个版本 gateway都不太稳定，最好升级到最新的稳定版本。
否则会报以下错误，报错场景：

页面请求接口时
postman请求接口时

但是通过命令curl请求接口却是正常的，非常奇怪

2019-08-13 17:32:50.052 ERROR 8 --- [or-http-epoll-4] .a.w.r.e.DefaultErrorWebExceptionHandler : Failed to handle request [GET http://xxxxxxx/xxxx?productcode=1223&price=12&statecode=1]

java.lang.NullPointerException: null
        at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) ~[na:1.8.0_191]
        at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006) ~[na:1.8.0_191]
        at org.springframework.cloud.gateway.filter.NettyRoutingFilter.lambda$filter$3(NettyRoutingFilter.java:117) ~[spring-cloud-gateway-core-2.0.0.RELEASE.jar!/:2.0.0.RELEASE]
        at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:177) ~[reactor-core-3.1.14.RELEASE.jar!/:3.1.14.RELEASE]
        at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:108) ~[reactor-core-3.1.14.RELEASE.jar!/:3.1.14.RELEASE]
        at reactor.core.publisher.FluxRetryPredicate$RetryPredicateSubscriber.onNext(FluxRetryPredicate.java:81) ~[reactor-core-3.1.14.RELEASE.jar!/:3.1.14.RELEASE]
        at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:146) ~[reactor-core-3.1.14.RELEASE.jar!/:3.1.14.RELEASE]
        at reactor.ipc.netty.channel.PooledClientContextHandler.fireContextActive(PooledClientContextHandler.java:87) ~[reactor-netty-0.7.14.RELEASE.jar!/:0.7.14.RELEASE]
        at reactor.ipc.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:608) ~[reactor-netty-0.7.14.RELEASE.jar!/:0.7.14.RELEASE]
        at reactor.ipc.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:138) ~[reactor-netty-0.7.14.RELEASE.jar!/:0.7.14.RELEASE]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323) ~[netty-codec-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:297) ~[netty-codec-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) ~[netty-transport-4.1.31.Final.jar!/:4.1.31.Final]
        at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799) ~[netty-transport-native-epoll-4.1.31.Final-linux-x86_64.jar!/:4.1.31.Final]
        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:433) ~[netty-transport-native-epoll-4.1.31.Final-linux-x86_64.jar!/:4.1.31.Final]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:330) ~[netty-transport-native-epoll-4.1.31.Final-linux-x86_64.jar!/:4.1.31.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:897) ~[netty-common-4.1.31.Final.jar!/:4.1.31.Final]
        at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_191]