本文解决在Spring框架中集成阿里云RocketMQ时出现的NoClassDefFoundError错误，通过调整context:component-scan配置避免扫描阿里云特定包，确保项目正常运行。
错误信息
将阿里云mq的jar包引入项目后报错
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.aliyun.openservices.shade.com.alibaba.fastjson.support.spring.JSONPResponseBodyAdvice]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/aliyun/openservices/shade/org/apache/commons/logging/LogFactory
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1088)
… 33 more
Caused by: java.lang.NoClassDefFoundError: com/aliyun/openservices/shade/org/apache/commons/logging/LogFactory
at com.aliyun.openservices.shade.com.alibaba.fastjson.support.spring.JSONPResponseBodyAdvice.(JSONPResponseBodyAdvice.java:42)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
… 35 more
Caused by: java.lang.ClassNotFoundException: com.aliyun.openservices.shade.org.apache.commons.logging.LogFactory
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
… 41 more
七月 03, 2019 6:08:52 下午 org.apache.catalina.core.ApplicationContext log
严重: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘JSONPResponseBodyAdvice’ defined in URL [jar:file:/D:/newTomcat7/apache-tomcat-7.0.52/webapps/portal/WEB-INF/lib/ons-client-1.8.0.Final.jar!/com/aliyun/openservices/shade/com/alibaba/fastjson/support/spring/JSONPResponseBodyAdvice.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.aliyun.openservices.shade.com.alibaba.fastjson.support.spring.JSONPResponseBodyAdvice]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/aliyun/openservices/shade/org/apache/commons/logging/LogFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1095)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1040)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:505)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory
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1.getObject(AbstractBeanFactory.java:302)atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)atorg.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)atorg.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)atorg.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)atorg.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)atorg.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)atorg.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)atjavax.servlet.GenericServlet.init(GenericServlet.java:158)atorg.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1279)atorg.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1192)atorg.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)atorg.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5210)atorg.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5493)atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)atorg.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)atorg.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)atorg.apache.catalina.core.StandardHost.addChild(StandardHost.java:632)atorg.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1229)atorg.apache.catalina.startup.HostConfigDeployDirectory.run(HostConfig.java:1875)
at java.util.concurrent.Executors
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RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor
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at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.aliyun.openservices.shade.com.alibaba.fastjson.support.spring.JSONPResponseBodyAdvice]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/aliyun/openservices/shade/org/apache/commons/logging/LogFactory
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1088)
… 33 more
Caused by: java.lang.NoClassDefFoundError: com/aliyun/openservices/shade/org/apache/commons/logging/LogFactory
at com.aliyun.openservices.shade.com.alibaba.fastjson.support.spring.JSONPResponseBodyAdvice.(JSONPResponseBodyAdvice.java:42)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
… 35 more
Caused by: java.lang.ClassNotFoundException: com.aliyun.openservices.shade.org.apache.commons.logging.LogFactory
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
… 41 more
七月 03, 2019 6:08:52 下午 org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /portal threw load() exception
java.lang.ClassNotFoundException: com.aliyun.openservices.shade.org.apache.commons.logging.LogFactory
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
at com.aliyun.openservices.shade.com.alibaba.fastjson.support.spring.JSONPResponseBodyAdvice.(JSONPResponseBodyAdvice.java:42)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1088)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1040)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:505)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory
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1.getObject(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624) at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672) at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543) at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484) at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) at javax.servlet.GenericServlet.init(GenericServlet.java:158) at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1279) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1192) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5210) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5493) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1229) at org.apache.catalina.startup.HostConfig
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at java.util.concurrent.Executors
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RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor
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at java.lang.Thread.run(Thread.java:745)
原因
原因是本项目是从 com开始扫的，demo是指定了初始化的类，所以报错的’JSONPResponseBodyAdvice’ 类里面无法import进那个logging，在demo项目中为什么不报错呢，是因为没调用到这个类吗，因为之前讲这个类删除后的jar包导入，也完全没有问题，还有将收发消息，作为main方法启动也没有问题
解决办法
让它不扫描阿里云的这个包，只调用就行了
<context:component-scan base-package=“com” use-default-filters=“false”>
<context:include-filter type=“annotation” expression=“org.springframework.stereotype.Controller”/>
<context:include-filter type=“annotation” expression=“org.springframework.web.bind.annotation.ControllerAdvice”/>
<context:exclude-filter type=“regex” expression=“com.aliyun.*” />
</context:component-scan>
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