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Spring WebClient调用REST API时遭遇Jackson NoSuchMethodError问题求助

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云原生阿岚
2026-8-4
Spring WebClient解析响应时NoSuchMethodError问题解决

环境信息

  • Spring Framework 5.3.18（包含spring-webflux）
  • reactor-netty 1.1.1
  • reactor-core 3.5.1

相关代码 

@RestController
@RequestMapping("/messages")
public class WsmessageController {

    @Autowired
    private WSMessageService wSMessageService;

    @GetMapping
    @ResponseStatus(HttpStatus.OK)
    public List<Wsmessage> findAllWSMessages() {
        List<Wsmessage> wsMessages = wSMessageService.findAllWSMessages("SELECT u FROM Wsmessage u");
        System.out.println("SERVER GET ALL MESSAGES = " + wsMessages);
        return wsMessages;
    }
}

public Flux<Message> findAll() {
   Flux<Message> messages = webClient.get().uri("/messages").retrieve().bodyToFlux(Message.class);
   return messages;
}

List<Message> messagesblock = messages.collectList().block();

问题描述

调用上述REST API时，客户端触发JVM致命异常并阻塞，服务端已成功返回数据，但客户端解析响应失败，报错如下：

java.lang.NoSuchMethodError: com.fasterxml.jackson.core.JsonFactory.createNonBlockingByteArrayParser()Lcom/fasterxml/jackson/core/JsonParser;

完整堆栈跟踪：

12:10:05,545 WARN [reactor.core.Exceptions] (reactor-http-nio-3) throwIfFatal检测到JVM致命异常，如下抛出并记录:: java.lang.NoSuchMethodError: com.fasterxml.jackson.core.JsonFactory.createNonBlockingByteArrayParser()Lcom/fasterxml/jackson/core/JsonParser;
at org.springframework.http.codec.json.Jackson2Tokenizer.tokenize(Jackson2Tokenizer.java:243)
at org.springframework.http.codec.json.AbstractJackson2Decoder.decode(AbstractJackson2Decoder.java:138)
at org.springframework.http.codec.DecoderHttpMessageReader.read(DecoderHttpMessageReader.java:104)
at org.springframework.web.reactive.function.BodyExtractors.lambda$readToFlux$16(BodyExtractors.java:219)
at java.util.Optional.orElseGet(Optional.java:267)
at org.springframework.web.reactive.function.BodyExtractors.readToFlux(BodyExtractors.java:219)
at org.springframework.web.reactive.function.BodyExtractors.lambda$null$3(BodyExtractors.java:115)
at java.util.Optional.map(Optional.java:215)
at org.springframework.web.reactive.function.BodyExtractors.readWithMessageReaders(BodyExtractors.java:196)
at org.springframework.web.reactive.function.BodyExtractors.lambda$toFlux$5(BodyExtractors.java:114)
at org.springframework.web.reactive.function.client.DefaultClientResponse.body(DefaultClientResponse.java:131)
at org.springframework.web.reactive.function.client.DefaultClientResponse.bodyToFlux(DefaultClientResponse.java:158)
at org.springframework.web.reactive.function.client.DefaultWebClient$DefaultResponseSpec.lambda$bodyToFlux$4(DefaultWebClient.java:555)
at reactor.core.publisher.MonoFlatMapMany$FlatMapManyMain.onNext(MonoFlatMapMany.java:163)
at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74)
at reactor.core.publisher.FluxOnAssembly$OnAssemblySubscriber.onNext(FluxOnAssembly.java:539)
at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122)
at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:79)
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200)
at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82)
at reactor.core.publisher.MonoFlatMapMany$FlatMapManyInner.onNext(MonoFlatMapMany.java:250)
at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107)
at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2545)
at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136)
at reactor.core.publisher.MonoFlatMapMany$FlatMapManyMain.onSubscribeInner(MonoFlatMapMany.java:150)
at reactor.core.publisher.MonoFlatMapMany$FlatMapManyInner.onSubscribe(MonoFlatMapMany.java:245)
at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onSubscribe(FluxContextWrite.java:101)
at reactor.core.publisher.FluxJust.subscribe(FluxJust.java:68)
at reactor.core.publisher.Flux.subscribe(Flux.java:8660)
at reactor.core.publisher.MonoFlatMapMany$FlatMapManyMain.onNext(MonoFlatMapMany.java:195)
at reactor.core.publisher.SerializedSubscriber.onNext(SerializedSubscriber.java:99)
at reactor.core.publisher.FluxRetryWhen$RetryWhenMainSubscriber.onNext(FluxRetryWhen.java:174)
at reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:172)
at reactor.netty.http.client.HttpClientConnect$HttpIOHandlerObserver.onStateChange(HttpClientConnect.java:431)
at reactor.netty.ReactorNetty$CompositeConnectionObserver.onStateChange(ReactorNetty.java:705)
at reactor.netty.resources.DefaultPooledConnectionProvider$DisposableAcquire.onStateChange(DefaultPooledConnectionProvider.java:195)
at reactor.netty.resources.DefaultPooledConnectionProvider$PooledConnection.onStateChange(DefaultPooledConnectionProvider.java:456)
at reactor.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:637)
at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:113)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:333)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:454)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
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:748)

问题原因

createNonBlockingByteArrayParser()是Jackson Core 2.12版本新增的方法，而Spring WebFlux 5.3.x依赖的Jackson版本要求至少为2.12.x。你的项目中大概率引入了更低版本的Jackson Core，导致运行时找不到该方法，触发NoSuchMethodError。

解决方法

1. 统一Jackson版本

在依赖管理文件中指定与Spring 5.3.18兼容的Jackson版本（推荐2.12.x或2.13.x），确保所有Jackson相关依赖版本一致：

Maven（pom.xml）

<properties>
    <jackson.version>2.12.7</jackson.version>
</properties>

<dependencies>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>${jackson.version}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>${jackson.version}</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>${jackson.version}</version>
    </dependency>
</dependencies>

Gradle（build.gradle）

ext {
    jacksonVersion = '2.12.7'
}

dependencies {
    implementation "com.fasterxml.jackson.core:jackson-core:$jacksonVersion"
    implementation "com.fasterxml.jackson.core:jackson-databind:$jacksonVersion"
    implementation "com.fasterxml.jackson.core:jackson-annotations:$jacksonVersion"
}

2. 排查并解决依赖冲突

执行依赖分析命令，找出引入低版本Jackson的依赖，并排除：

  • Maven：mvn dependency:tree，查找所有Jackson相关依赖的路径，排除低版本。
  • Gradle：gradle dependencies，同理排查并排除冲突依赖。

3. 验证修复

重新构建项目后，再次调用WebClient接口，确认异常消失，响应能正常解析。

内容的提问来源于stack exchange，提问作者Bouchaib Souhail

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最近更新时间：2026.08.04 23:31:46