java.lang.NoClassDefFoundError: io/r2dbc/spi/Result$Message

[funky-eyes]

i use mysql:5.7.36 and jdk_8u332

        <dependency>
            <groupId>org.mariadb</groupId>
            <artifactId>r2dbc-mariadb</artifactId>
            <version>1.1.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-r2dbc</artifactId>
            <version>2.4.13</version>
        </dependency>

I don't understand why the following error occurred

19:27:23.747 ERROR --- [     reactor-tcp-kqueue-6] r.n.channel.ChannelOperationsHandler     : [bcafd80c, L:/127.0.0.1:62825 - R:127.0.0.1/127.0.0.1:3306] Error was received while reading the incoming data. The connection will be closed.
==>
java.lang.NoClassDefFoundError: io/r2dbc/spi/Result$Message
	at org.mariadb.r2dbc.message.flow.AuthenticationFlow$State$1.lambda$handle$0(AuthenticationFlow.java:137)
	at reactor.core.publisher.FluxHandle$HandleSubscriber.onNext(FluxHandle.java:103)
	at reactor.core.publisher.FluxCreate$BufferAsyncSink.drain(FluxCreate.java:793)
	at reactor.core.publisher.FluxCreate$BufferAsyncSink.next(FluxCreate.java:718)
	at reactor.core.publisher.FluxCreate$SerializedFluxSink.next(FluxCreate.java:154)
	at org.mariadb.r2dbc.client.Exchange.emit(Exchange.java:50)
	at org.mariadb.r2dbc.client.SimpleClient$ServerMessageSubscriber.onNext(SimpleClient.java:589)
	at org.mariadb.r2dbc.client.SimpleClient$ServerMessageSubscriber.onNext(SimpleClient.java:546)
	at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
	at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
	at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:120)
	at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:279)
	at reactor.netty.channel.FluxReceive.onInboundNext(FluxReceive.java:388)
	at reactor.netty.channel.ChannelOperations.onInboundNext(ChannelOperations.java:404)
	at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:93)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.kqueue.AbstractKQueueStreamChannel$KQueueStreamUnsafe.readReady(AbstractKQueueStreamChannel.java:544)
	at io.netty.channel.kqueue.AbstractKQueueChannel$AbstractKQueueUnsafe.readReady(AbstractKQueueChannel.java:381)
	at io.netty.channel.kqueue.KQueueEventLoop.processReady(KQueueEventLoop.java:211)
	at io.netty.channel.kqueue.KQueueEventLoop.run(KQueueEventLoop.java:289)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Thread.java:750)
<==

[funky-eyes]

@rusher PTAL

[iambenkay]

You have to update your version of spring. @a364176773

[sunjinwei5858]

so how to deal with this problem

[rusher]

spring-boot-starter-data-r2dbc:2.4.13 depends on R2DBC-SPI 0.8.6-RELEASE. There has been significant spec change since then, some being incompatible with current version. Using a recent version of spring correct the problem.

[funky-eyes]

thx