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将@Reference修改为@Autowired之后报Rpc异常

之前用@Reference的时候, Rpc调用正常, 只是调不到cancel方法,
现在直接报Rpc异常.
异常如下:

this is consumer sendMessage, message = 1,2,3
this is consumer cancelSendMessage, message = 1,2,3
Exception in thread "main" org.apache.dubbo.rpc.RpcException: Failed to invoke the method saveOrder in the service com.mooc.jiangzh.dubbo.springboot.ServiceAPI. Tried 3 times of the providers [192.168.0.106:20880] (1/1) from the registry localhost:2181 on the consumer 172.17.43.177 using the dubbo version 2.7.8. Last error is: Failed to invoke remote method: saveOrder, provider: dubbo://192.168.0.106:20880/com.mooc.jiangzh.dubbo.springboot.ServiceAPI?anyhost=true&application=dubbo-consumer&check=false&dubbo=2.6.0&generic=false&init=false&interface=com.mooc.jiangzh.dubbo.springboot.ServiceAPI&metadata-type=remote&methods=saveOrder,sendMessage,isTrueSeats,isNotSold&pid=1772&register.ip=172.17.43.177&remote.application=dubbo-spring-boot-starter&side=consumer&sticky=false&timestamp=1609129820084, cause: org.apache.dubbo.remoting.RemotingException: io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)
	at io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:304)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)
	at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:106)
	at org.apache.dubbo.remoting.transport.netty4.NettyClientHandler.write(NettyClientHandler.java:88)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:38)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1081)
	at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1128)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1070)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:465)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
	at com.alibaba.com.caucho.hessian.io.Hessian2Output.flushBuffer(Hessian2Output.java:1395)
	at org.apache.dubbo.common.serialize.hessian2.Hessian2ObjectOutput.flushBuffer(Hessian2ObjectOutput.java:103)
	at org.apache.dubbo.remoting.exchange.codec.ExchangeCodec.encodeRequest(ExchangeCodec.java:240)
	at org.apache.dubbo.remoting.exchange.codec.ExchangeCodec.encode(ExchangeCodec.java:69)
	at org.apache.dubbo.rpc.protocol.dubbo.DubboCountCodec.encode(DubboCountCodec.java:40)
	at org.apache.dubbo.remoting.transport.netty4.NettyCodecAdapter$InternalEncoder.encode(NettyCodecAdapter.java:69)
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107)
	... 23 more

	at org.apache.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:113)
	at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:260)
	at org.apache.dubbo.rpc.cluster.interceptor.ClusterInterceptor.intercept(ClusterInterceptor.java:47)
	at org.apache.dubbo.rpc.cluster.support.wrapper.AbstractCluster$InterceptorInvokerNode.invoke(AbstractCluster.java:92)
	at org.apache.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:88)
	at org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:74)
	at org.apache.dubbo.common.bytecode.proxy0.saveOrder(proxy0.java)
	at com.mooc.jiangzh.dubbo.springboot.consumer.transaction.TransactionConsumer.sendMessage(TransactionConsumer.java:22)
	at com.mooc.jiangzh.dubbo.springboot.consumer.transaction.TransactionConsumer$$FastClassBySpringCGLIB$$c1bc457b.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:746)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:100)
	at org.mengyun.tcctransaction.interceptor.ResourceCoordinatorInterceptor.interceptTransactionContextMethod(ResourceCoordinatorInterceptor.java:48)
	at org.mengyun.tcctransaction.interceptor.ResourceCoordinatorAspect.interceptTransactionContextMethod(ResourceCoordinatorAspect.java:23)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633)
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:174)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
	at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:88)
	at org.mengyun.tcctransaction.interceptor.CompensableMethodContext.proceed(CompensableMethodContext.java:99)
	at org.mengyun.tcctransaction.interceptor.CompensableTransactionInterceptor.rootMethodProceed(CompensableTransactionInterceptor.java:79)
	at org.mengyun.tcctransaction.interceptor.CompensableTransactionInterceptor.interceptCompensableMethod(CompensableTransactionInterceptor.java:51)
	at org.mengyun.tcctransaction.interceptor.CompensableTransactionAspect.interceptCompensableMethod(CompensableTransactionAspect.java:28)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633)
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:174)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
	at com.mooc.jiangzh.dubbo.springboot.consumer.transaction.TransactionConsumer$$EnhancerBySpringCGLIB$$73ef5157.sendMessage(<generated>)
	at com.mooc.jiangzh.dubbo.springboot.consumer.ConsumerApplication.main(ConsumerApplication.java:28)
Caused by: java.util.concurrent.ExecutionException: org.apache.dubbo.remoting.RemotingException: io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)
	at io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:304)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)
	at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:106)
	at org.apache.dubbo.remoting.transport.netty4.NettyClientHandler.write(NettyClientHandler.java:88)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:38)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1081)
	at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1128)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1070)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:465)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
	at com.alibaba.com.caucho.hessian.io.Hessian2Output.flushBuffer(Hessian2Output.java:1395)
	at org.apache.dubbo.common.serialize.hessian2.Hessian2ObjectOutput.flushBuffer(Hessian2ObjectOutput.java:103)
	at org.apache.dubbo.remoting.exchange.codec.ExchangeCodec.encodeRequest(ExchangeCodec.java:240)
	at org.apache.dubbo.remoting.exchange.codec.ExchangeCodec.encode(ExchangeCodec.java:69)
	at org.apache.dubbo.rpc.protocol.dubbo.DubboCountCodec.encode(DubboCountCodec.java:40)
	at org.apache.dubbo.remoting.transport.netty4.NettyCodecAdapter$InternalEncoder.encode(NettyCodecAdapter.java:69)
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107)
	... 23 more

	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2086)
	at org.apache.dubbo.rpc.AsyncRpcResult.get(AsyncRpcResult.java:181)
	at org.apache.dubbo.rpc.protocol.AsyncToSyncInvoker.invoke(AsyncToSyncInvoker.java:61)
	at org.apache.dubbo.rpc.listener.ListenerInvokerWrapper.invoke(ListenerInvokerWrapper.java:78)
	at org.apache.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:89)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:83)
	at org.apache.dubbo.rpc.protocol.dubbo.filter.FutureFilter.invoke(FutureFilter.java:51)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:83)
	at org.apache.dubbo.rpc.filter.ConsumerContextFilter.invoke(ConsumerContextFilter.java:69)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:83)
	at org.apache.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
	at org.apache.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:82)
	... 40 more
Caused by: org.apache.dubbo.remoting.RemotingException: io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
io.netty.handler.codec.EncoderException: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)
	at io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:304)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:816)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:723)
	at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:106)
	at org.apache.dubbo.remoting.transport.netty4.NettyClientHandler.write(NettyClientHandler.java:88)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:738)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:730)
	at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:38)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1081)
	at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1128)
	at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1070)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:465)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.NullPointerException: Cannot invoke "java.io.OutputStream.write(byte[], int, int)" because "this._os" is null
	at com.alibaba.com.caucho.hessian.io.Hessian2Output.flushBuffer(Hessian2Output.java:1395)
	at org.apache.dubbo.common.serialize.hessian2.Hessian2ObjectOutput.flushBuffer(Hessian2ObjectOutput.java:103)
	at org.apache.dubbo.remoting.exchange.codec.ExchangeCodec.encodeRequest(ExchangeCodec.java:240)
	at org.apache.dubbo.remoting.exchange.codec.ExchangeCodec.encode(ExchangeCodec.java:69)
	at org.apache.dubbo.rpc.protocol.dubbo.DubboCountCodec.encode(DubboCountCodec.java:40)
	at org.apache.dubbo.remoting.transport.netty4.NettyCodecAdapter$InternalEncoder.encode(NettyCodecAdapter.java:69)
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107)
	... 23 more

	at org.apache.dubbo.remoting.exchange.support.DefaultFuture.doReceived(DefaultFuture.java:212)
	at org.apache.dubbo.remoting.exchange.support.DefaultFuture.received(DefaultFuture.java:175)
	at org.apache.dubbo.remoting.exchange.support.DefaultFuture.received(DefaultFuture.java:163)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleResponse(HeaderExchangeHandler.java:60)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:181)
	at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
	at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:57)
	at org.apache.dubbo.common.threadpool.ThreadlessExecutor.waitAndDrain(ThreadlessExecutor.java:93)
	at org.apache.dubbo.rpc.AsyncRpcResult.get(AsyncRpcResult.java:179)
	... 50 more

配置文件和课上讲的一样:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

  <dubbo:provider proxy="tccJavassist"/>

  <dubbo:application name="dubbo-consumer"/>
  <dubbo:registry protocol="zookeeper" address="localhost:2181"/>
  <dubbo:reference id="serviceAPI" interface="com.mooc.jiangzh.dubbo.springboot.ServiceAPI" check="false"/>
</beans>
hahaha225 2020-12-28 12:54:55
源自：9-20  订单业务结果展示
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1回答

Allen 2020-12-28 16:49:10

把注解的代码发出来看一下呗

0 回复 有任何疑惑可以回复我~
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