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小编典典

Rsocket服务器异常：没有针对目标''的处理程序（目标未从客户端传递到服务器）

spring-boot

我为RSocket消息编写了一个小样

问题是我无法访问Rsocket端点，我从服务器收到以下异常：

客户端： 配置：

@Bean
RSocket rSocket() {
    return RSocketFactory.connect()
            .mimeType(MimeTypeUtils.APPLICATION_JSON_VALUE, MimeTypeUtils.APPLICATION_JSON_VALUE)
            .frameDecoder(PayloadDecoder.ZERO_COPY)
            .transport(TcpClientTransport.create(new InetSocketAddress(7500)))
            .start()
            .block();
}

@Bean
RSocketRequester requester(RSocketStrategies strategies) {
    return RSocketRequester.wrap(rSocket(), MimeTypeUtils.APPLICATION_JSON, MimeTypeUtils.APPLICATION_JSON, strategies);
}

控制器：

private final RSocketRequester requester;

@GetMapping("/greet/{name}")
public Publisher<GreetingsResponse> greet(@PathVariable String name) {
    return requester
            .route("hello")
            .data(new GreetingsRequest(name))
            .retrieveMono(GreetingsResponse.class);
}

服务器端（使用spring Rsocket）： yml：

spring:
  rsocket:
    server:
      port: 7500
      transport: tcp
  main:
    lazy-initialization: true

组态：

@MessageMapping("hello")
Mono<GreetingsResponse> greet(GreetingsRequest request) {
    return Mono.just(new GreetingsResponse("Hello " + request.getName() + " @ " + Instant.now()));
}

我很确定它与新wrap功能有关，RSocketRequester.wrap
因为它接受了一个新参数metadataMimeType，我将其设置为application / Json，但似乎不起作用

堆栈跟踪：

org.springframework.messaging.MessageDeliveryException：org.springframework.messaging.handler.invocation.reactive上的org.springframework.messaging.rsocket.annotation.support.RSocketMessageHandler.handleNoMatch（RSocketMessageHandler.java:312）上没有用于目标’‘的处理程序。
org.springframework.messaging.rsocket.annotation.support.MessagingRSocket.lambda
$上的AbstractMethodMessageHandler.getHandlerMethod（AbstractMethodMessageHandler.java:445）在org.springframework.messaging.handler.invocation.reactive.AbstractMethodMessageHandler.handleMessage（AbstractMethodMessageHandler.java:417）在org.springframework.messaging.rsocket.annotation.support.MessagingRSocket.lambda
$在reactor.core.publisher处的handleAndReply $
4（MessagingRSocket.java:173）在reactor.core.publisher.MonoDefer.subscribe（MonoDefer.java:44）处在reactor.core.publisher.Mono.subscribe（Mono.java:3920）。io.rsocket上的FluxConcatArray
$
ConcatArraySubscriber.onComplete（FluxConcatArray.java:207）在Reactor.core.publisher.FluxConcatArray.subscribe（FluxConcatArray.java:80）在react.core.publisher.MonoFromFluxOperator.subscribe（MonoFromFluxOperator.java:74）
io.rsocket上的.RSocketResponder.handleRequestResponse（RSocketResponder.java:386）。反应器.core.publisher上的RSocketResponder.handleFrame（RSocketResponder.java:298）.reactor.core.publisher上的LambdaSubscriber.onNext（LambdaSubscriber.java:160）
MonoFlatMapMany $
FlatMapManyInner.onNext（MonoFlatMapMany.java:238）位于Reactor.core.publisher.FluxGroupBy
$ UnicastGroupedFlux.drainRegular（FluxGroupBy.java:554）at
Reactor.core.publisher.FluxGroupBy $
UnicastGroupedFlux.drain（FluxGroupBy）。在reactor.core.publisher.FluxGroupBy $
UnicastGroupedFlux。在reactor.core.publisher处订阅（FluxGroupBy.java:696).relux.subscribe(Flux.java:8000）在reactor.core.publisher.MonoFlatMapMany
$ FlatMapManyMain.onNext（MonoFlatMapMany.java:184） .operator $
MonoSubscriber.complete（Operators.java:1582）at
io.rsocket.internal.ClientServerInputMultiplexer.lambda $ new $
1（ClientServer.core.publisher.MonoProcessor.onNext（MonoProcessor.java:316）在reactor.core.publisher.FluxGroupBy
$
GroupByMain.drainLoop（FluxGroupBy.java:380）在reactor.core.publisher.FluxGroupBy
$
GroupByMain.drainLoop（FluxGroupBy.java:380）在reactor.core.publisher.FluxGroupBy
$ GroupByMain.drain（FluxGroupBy
.java：316）在Reactor.core.publisher.FluxGroupBy $
GroupByMain.onNext（FluxGroupBy.java:201）在Reactor.core.publisher.FluxMap $
MapSubscriber处。在Reactor.core.publisher.FluxMap $
MapSubscriber.onNext（FluxMap.java:114）在Reactor.netty.channel上的onNext（FluxMap.java:114）在Reactor.netty.channel上的FluxReceive.drainReceiver（FluxReceive.java:206）
io.netty处的react.netty.channel.ChannelOperations.onInboundNext（ChannelOperations.java:342）处的.FluxReceive.onInboundNext（FluxReceive.java:322）io.netty处的react.netty.channel.ChannelOperationsHandler.channelRead（ChannelOperationsHandler.java:91）处的。
io.netty处io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:360）处io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:360）io.netty处io.netty.channel.AbstractChannelHandlerContext.fireChannelRead（AbstractChannelHandlerContext.java:352）
.handler.codec.ByteToMessageDecoder。io.netty.handler.codec.ByteToMessageDecoder.channelRead（ByteToMessageDecoder.java:302）上的io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:374）上的fireChannelRead（ByteToMessageDecoder.java:328）
io上的.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:360）在io.netty.channel.AbstractChannelHandlerContext.fireChannelRead（AbstractChannelHandlerContext.java:352）在io.netty.channel.DefaultChannelPipeline
$ HeadContext.channelRead（DefaultChannelPipeline.java:1421）在io。
io.netty.channel上的netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:374）io.netty.channel上的netty.channel.AbstractChannelHandlerContext.invokeChannelRead（AbstractChannelHandlerContext.java:360）。io.netty.channel.nio.AbstractNioByteChannel
$
NioByteUnsafe.read（AbstractNioByteChannel.java:163）上的DefaultChannelPipeline.fireChannelRead（DefaultChannelPipeline.java:930）io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）在io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）在io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）在io.netty.channel.nio.NioEventLoop.run
（NioEventLoop.java:511）在io.netty.util.concurrent.SingleThreadEventExecutor $
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.internal.ThreadExecutorMap
$ 2.run（ThreadExecutorMap.java:74）在io。
netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）位于java.base
/
java.lang.Thread.run（Thread.java:834）io上io.netty.channel.nio.AbstractNioByteChannel
$
NioByteUnsafe.read（AbstractNioByteChannel.java:163）的fireChannelRead（DefaultChannelPipeline.java:930）io
io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）
.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）在io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）在io.netty.channel.nio.NioEventLoop.run（NioEventLoop
.java：511）在io.netty.util.concurrent.SingleThreadEventExecutor $
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.internal.ThreadExecutorMap
$ 2.run（ThreadExecutorMap.java:74）在io.netty。
util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）在java.base
/
java.lang.Thread.run（Thread.java:834）io上io.netty.channel.nio.AbstractNioByteChannel
$
NioByteUnsafe.read（AbstractNioByteChannel.java:163）的fireChannelRead（DefaultChannelPipeline.java:930）io
io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）
.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）在io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）在io.netty.channel.nio.NioEventLoop.run（NioEventLoop
.java：511）在io.netty.util.concurrent.SingleThreadEventExecutor $
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.internal.ThreadExecutorMap
$ 2.run（ThreadExecutorMap.java:74）在io.netty。
util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）在java.base
/
java.lang.Thread.run（Thread.java:834）930）在io.netty.channel.nio的io.netty.channel.nio.AbstractNioByteChannel
$
NioByteUnsafe.read（AbstractNioByteChannel.java:163）在io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）位于io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）的io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）的.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）
io.netty.util.internal.ThreadExecutorMap $
2.run（ThreadExecutorMap.java:74）的io.netty.util.concurrent.SingleThreadEventExecutor
$
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.concurrent.FastThreadLocalRunnable。在java.base
/
java.lang.Thread.run（Thread.java:834）上运行（FastThreadLocalRunnable.java:30）930）在io.netty.channel.nio的io.netty.channel.nio.AbstractNioByteChannel
$
NioByteUnsafe.read（AbstractNioByteChannel.java:163）在io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）位于io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）的io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）的.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）
io.netty.util.internal.ThreadExecutorMap $
2.run（ThreadExecutorMap.java:74）的io.netty.util.concurrent.SingleThreadEventExecutor
$
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.concurrent.FastThreadLocalRunnable。在java.base
/
java.lang.Thread.run（Thread.java:834）上运行（FastThreadLocalRunnable.java:30）在io.netty上读取io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）在io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）处的（AbstractNioByteChannel.java:163）
io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）上的.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）在io.netty.util.concurrent.SingleThreadEventExecutor
$ 5.run（SingleThreadEventExecutor。
java：918）位于io.netty.util.internal.ThreadExecutorMap $
2.run（ThreadExecutorMap.java:74）位于io.netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）位于java.base
/ java。
lang.Thread.run（Thread.java:834）在io.netty上读取io.netty.channel.nio.NioEventLoop.processSelectedKey（NioEventLoop.java:697）在io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized（NioEventLoop.java:632）处的（AbstractNioByteChannel.java:163）
io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）上的.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）在io.netty.util.concurrent.SingleThreadEventExecutor
$ 5.run（SingleThreadEventExecutor。
java：918）位于io.netty.util.internal.ThreadExecutorMap $
2.run（ThreadExecutorMap.java:74）位于io.netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）位于java.base
/ java。
lang.Thread.run（Thread.java:834）io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）的io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）的io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）的processSelectedKeysOptimized（NioEventLoop.java:632）
.io.netty.util.internal.ThreadExecutorMap $
2.run（ThreadExecutorMap.java:74）上的.util.concurrent.SingleThreadEventExecutor
$
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable
.java：30），位于java.base /
java.lang.Thread.run（Thread.java:834）io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）的io.netty.channel.nio.NioEventLoop.processSelectedKeys（NioEventLoop.java:549）的io.netty.channel.nio.NioEventLoop.run（NioEventLoop.java:511）的processSelectedKeysOptimized（NioEventLoop.java:632）
.io.netty.util.internal.ThreadExecutorMap $
2.run（ThreadExecutorMap.java:74）上的.util.concurrent.SingleThreadEventExecutor
$
5.run（SingleThreadEventExecutor.java:918）在io.netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable
.java：30），位于java.base /
java.lang.Thread.run（Thread.java:834）在io.netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）处的netty.util.internal.ThreadExecutorMap
$ 2.run（ThreadExecutorMap.java:74）在java.base / java.lang.Thread.run（Thread
.java：834）在io.netty.util.concurrent.FastThreadLocalRunnable.run（FastThreadLocalRunnable.java:30）处的netty.util.internal.ThreadExecutorMap
$ 2.run（ThreadExecutorMap.java:74）在java.base / java.lang.Thread.run（Thread
.java：834）


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2020-05-30

共1个答案

小编典典

您正在使用哪个spring版本？我有一个相同的问题，我通过更改spring-boot-starter-parent 2.2.0.M3来解决了。

这是我的来源 https://github.com/han1448/spring-rsocket-
example

添加。

我解决了这个问题。您需要将mimeType更改为message/x.rsocket.routing.v0。您可以从获取此mimeType
MetadataExtractor.ROUTING。

@Bean
RSocket rSocket() {
    return RSocketFactory.connect()
            .mimeType(MetadataExtractor.ROUTING.toString(), MimeTypeUtils.APPLICATION_JSON_VALUE)
            .frameDecoder(PayloadDecoder.ZERO_COPY)
            .transport(TcpClientTransport.create(new InetSocketAddress(7500)))
            .start()
            .block();
}

@Bean
RSocketRequester requester(RSocketStrategies strategies) {
    return RSocketRequester.wrap(rSocket(), MimeTypeUtils.APPLICATION_JSON, MetadataExtractor.ROUTING, strategies);
}
2020-05-30