rocketmq-spring-boot-starter依赖fastjson1，但是我的项目已经整体迁移到fastjson2了，如果排除1.0的依赖，则直接影响服务启动

[shijiebei2009]

java.lang.IllegalStateException: org.apache.rocketmq.remoting.exception.RemotingSendRequestException: send request to <169.254.0.168:2000> failed
at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:671)
at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:500)
at org.apache.rocketmq.client.impl.consumer.DefaultMQPushConsumerImpl.updateTopicSubscribeInfoWhenSubscriptionChanged(DefaultMQPushConsumerImpl.java:1206)
at org.apache.rocketmq.client.impl.consumer.DefaultMQPushConsumerImpl.start(DefaultMQPushConsumerImpl.java:969)
at org.apache.rocketmq.client.consumer.DefaultMQPushConsumer.start(DefaultMQPushConsumer.java:737)
at org.apache.rocketmq.spring.support.DefaultRocketMQListenerContainer.start(DefaultRocketMQListenerContainer.java:343)
at org.apache.rocketmq.spring.autoconfigure.ListenerContainerConfiguration.registerContainer(ListenerContainerConfiguration.java:106)
at org.apache.rocketmq.spring.annotation.RocketMQMessageListenerBeanPostProcessor.postProcessAfterInitialization(RocketMQMessageListenerBeanPostProcessor.java:55)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1808)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:953)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415)
at org.springframework.boot.SpringApplication.sw$original$run$gd30h42(SpringApplication.java:303)
at org.springframework.boot.SpringApplication.sw$original$run$gd30h42$accessor$sw$ep8ur51(SpringApplication.java)
at org.springframework.boot.SpringApplication$sw$auxiliary$7upchi0.call(Unknown Source)
at org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstMethodsInter.intercept(InstMethodsInter.java:91)
at org.springframework.boot.SpringApplication.run(SpringApplication.java)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
at com.nio.srm.mall.product.Application.main(Application.java:27)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
Caused by: org.apache.rocketmq.remoting.exception.RemotingSendRequestException: send request to <169.254.0.168:2000> failed
at org.apache.rocketmq.remoting.netty.NettyRemotingAbstract.invokeSyncImpl(NettyRemotingAbstract.java:436)
at org.apache.rocketmq.remoting.netty.NettyRemotingClient.invokeSync(NettyRemotingClient.java:455)
at org.apache.rocketmq.client.impl.MQClientAPIImpl.getTopicRouteInfoFromNameServer(MQClientAPIImpl.java:1785)
at org.apache.rocketmq.client.impl.MQClientAPIImpl.getTopicRouteInfoFromNameServer(MQClientAPIImpl.java:1776)
at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:610)
... 37 common frames omitted
Caused by: io.netty.handler.codec.EncoderException: java.lang.NoClassDefFoundError: com/alibaba/fastjson/JSON
at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702)
at io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:302)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792)
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702)
at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:115)
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717)
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764)
at io.netty.channel.AbstractChannelHandlerContext$WriteTask.run(AbstractChannelHandlerContext.java:1071)
at io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:66)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.NoClassDefFoundError: com/alibaba/fastjson/JSON
at org.apache.rocketmq.remoting.protocol.RemotingSerializable.toJson(RemotingSerializable.java:37)
at org.apache.rocketmq.remoting.protocol.RemotingSerializable.encode(RemotingSerializable.java:29)
at org.apache.rocketmq.remoting.protocol.RemotingCommand.fastEncodeHeader(RemotingCommand.java:466)
at org.apache.rocketmq.remoting.netty.NettyEncoder.encode(NettyEncoder.java:37)
at org.apache.rocketmq.remoting.netty.NettyEncoder.encode(NettyEncoder.java:29)
at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107)
... 17 common frames omitted
Caused by: java.lang.ClassNotFoundException: com.alibaba.fastjson.JSON
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:151)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 23 common frames omitted

[wenshao]

应该是底层的实现有依赖了，加上这个兼容包看下：

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>2.0.49</version>
</dependency>