dubbo rest服务(消费者) java.lang.ClassNotFoundException: org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient4Engine 错误问题

1、版本

dubbo 2.7.3

2、描述

java.lang.ClassNotFoundException: org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient4Engine

2019-07-26 20:16:59,572 [main] ERROR [org.apache.dubbo.registry.integration.RegistryDirectory] -  [DUBBO] Failed to refer invoker for interface:interface boazy.dubbo.demo.api.RestUserService,url:(rest://10.198.0.10:8083/boazy.dubbo.demo.api.RestUserService?anyhost=true&application=boazy-dubbo-demo-consumer&bean.name=boazy.dubbo.demo.api.RestUserService&check=false&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=boazy.dubbo.demo.api.RestUserService&lazy=false&methods=registerUser,queryUser&owner=boazy&pid=14208&protocol=rest&qos.port=33333&register=true&register.ip=10.198.0.10&release=2.7.3&remote.application=boazy-dubbo-demo-provider&server=jetty&side=consumer&sticky=false&timestamp=1564143395915)org/jboss/resteasy/client/jaxrs/engines/ApacheHttpClient4Engine, dubbo version: 2.7.3, current host: 10.198.0.10
java.lang.NoClassDefFoundError: org/jboss/resteasy/client/jaxrs/engines/ApacheHttpClient4Engine
    at org.apache.dubbo.rpc.protocol.rest.RestProtocol.doRefer(RestProtocol.java:180)
    at org.apache.dubbo.rpc.protocol.AbstractProxyProtocol.protocolBindingRefer(AbstractProxyProtocol.java:99)
    at org.apache.dubbo.rpc.protocol.AbstractProtocol.refer(AbstractProtocol.java:91)
    at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:130)
    at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:72)
    at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:71)
    at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)
    at org.apache.dubbo.registry.integration.RegistryDirectory.toInvokers(RegistryDirectory.java:423)
    at org.apache.dubbo.registry.integration.RegistryDirectory.refreshInvoker(RegistryDirectory.java:280)
    at org.apache.dubbo.registry.integration.RegistryDirectory.refreshOverrideAndInvoker(RegistryDirectory.java:239)
    at org.apache.dubbo.registry.integration.RegistryDirectory.notify(RegistryDirectory.java:233)
    at org.apache.dubbo.registry.support.AbstractRegistry.notify(AbstractRegistry.java:418)
    at org.apache.dubbo.registry.support.FailbackRegistry.doNotify(FailbackRegistry.java:369)
    at org.apache.dubbo.registry.support.FailbackRegistry.notify(FailbackRegistry.java:360)
    at org.apache.dubbo.registry.zookeeper.ZookeeperRegistry.doSubscribe(ZookeeperRegistry.java:183)
    at org.apache.dubbo.registry.support.FailbackRegistry.subscribe(FailbackRegistry.java:295)
    at org.apache.dubbo.registry.integration.RegistryDirectory.subscribe(RegistryDirectory.java:172)
    at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:411)
    at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:392)
    at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:128)
    at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:70)
    at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:69)
    at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)
    at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:396)
    at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:329)
    at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:250)
    at org.apache.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:73)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:170)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1640)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1080)
    at boazy.dubbo.demo.consumer.ConsumerApp.main(ConsumerApp.java:56)
Caused by: java.lang.ClassNotFoundException: org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient4Engine
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 34 more
2019-07-26 20:16:59,588 [main] ERROR [org.apache.dubbo.registry.integration.RegistryDirectory] - urls to invokers error .invokerUrls.size :1, invoker.size :0. urls :[rest://10.198.0.10:8083/boazy.dubbo.demo.api.RestUserService?anyhost=true&application=boazy-dubbo-demo-provider&bean.name=boazy.dubbo.demo.api.RestUserService&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=boazy.dubbo.demo.api.RestUserService&methods=registerUser,queryUser&owner=boazy&pid=17996&register=true&release=2.7.3&server=jetty&side=provider&timestamp=1564143395915]
java.lang.IllegalStateException: urls to invokers error .invokerUrls.size :1, invoker.size :0. urls :[rest://10.198.0.10:8083/boazy.dubbo.demo.api.RestUserService?anyhost=true&application=boazy-dubbo-demo-provider&bean.name=boazy.dubbo.demo.api.RestUserService&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=boazy.dubbo.demo.api.RestUserService&methods=registerUser,queryUser&owner=boazy&pid=17996&register=true&release=2.7.3&server=jetty&side=provider&timestamp=1564143395915]
    at org.apache.dubbo.registry.integration.RegistryDirectory.refreshInvoker(RegistryDirectory.java:292)
    at org.apache.dubbo.registry.integration.RegistryDirectory.refreshOverrideAndInvoker(RegistryDirectory.java:239)
    at org.apache.dubbo.registry.integration.RegistryDirectory.notify(RegistryDirectory.java:233)
    at org.apache.dubbo.registry.support.AbstractRegistry.notify(AbstractRegistry.java:418)
    at org.apache.dubbo.registry.support.FailbackRegistry.doNotify(FailbackRegistry.java:369)
    at org.apache.dubbo.registry.support.FailbackRegistry.notify(FailbackRegistry.java:360)
    at org.apache.dubbo.registry.zookeeper.ZookeeperRegistry.doSubscribe(ZookeeperRegistry.java:183)
    at org.apache.dubbo.registry.support.FailbackRegistry.subscribe(FailbackRegistry.java:295)
    at org.apache.dubbo.registry.integration.RegistryDirectory.subscribe(RegistryDirectory.java:172)
    at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:411)
    at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:392)
    at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:128)
    at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:70)
    at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:69)
    at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java)
    at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:396)
    at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:329)
    at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:250)
    at org.apache.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:73)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:170)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1640)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1080)
    at boazy.dubbo.demo.consumer.ConsumerApp.main(ConsumerApp.java:56)
restUserService invoking error.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'restUserService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Failed to check the status of the service boazy.dubbo.demo.api.RestUserService. No provider available for the service boazy.dubbo.demo.api.RestUserService from the url zookeeper://10.198.0.21:2181/org.apache.dubbo.registry.RegistryService?anyhost=true&application=boazy-dubbo-demo-consumer&bean.name=boazy.dubbo.demo.api.RestUserService&check=false&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=boazy.dubbo.demo.api.RestUserService&lazy=false&methods=registerUser,queryUser&owner=boazy&pid=14208&protocol=rest&qos.port=33333&register=true&register.ip=10.198.0.10&release=2.7.3&remote.application=boazy-dubbo-demo-provider&server=jetty&side=consumer&sticky=false&timestamp=1564143418650 to the consumer 10.198.0.10 use dubbo version 2.7.3
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:177)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1640)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1080)
    at boazy.dubbo.demo.consumer.ConsumerApp.main(ConsumerApp.java:56)
Caused by: java.lang.IllegalStateException: Failed to check the status of the service boazy.dubbo.demo.api.RestUserService. No provider available for the service boazy.dubbo.demo.api.RestUserService from the url zookeeper://10.198.0.21:2181/org.apache.dubbo.registry.RegistryService?anyhost=true&application=boazy-dubbo-demo-consumer&bean.name=boazy.dubbo.demo.api.RestUserService&check=false&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=boazy.dubbo.demo.api.RestUserService&lazy=false&methods=registerUser,queryUser&owner=boazy&pid=14208&protocol=rest&qos.port=33333&register=true&register.ip=10.198.0.10&release=2.7.3&remote.application=boazy-dubbo-demo-provider&server=jetty&side=consumer&sticky=false&timestamp=1564143418650 to the consumer 10.198.0.10 use dubbo version 2.7.3
    at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:418)
    at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:329)
    at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:250)
    at org.apache.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:73)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:170)
    ... 6 more

3、解决

是 resteasy-client 版本过高引起的问题

resteasy-client 4.x.x 版本中无 ApacheHttpClient4Engine 类，4.x.x版本中叫 ApacheHttpClient43Engine 类

resteasy-client 3.8.x 版本中有ApacheHttpClient4Engine类

将 resteasy-client 4.x.x 换成 resteasy-client 3.8.x 版本，就可以解决上面的问题咯...

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原文地址：https://www.cnblogs.com/boazy/p/11253024.html