dubbo consumer部署之坑

最近在研究dubbo框架，部署consumer项目时遇到一个很棘手的问题，研究了好长一段时间才搞定，决定分享一下这个问题，希望能给遇到类似问题的朋友们带来帮助。

直接上错误信息：

  06-May-2017 16:33:17.263 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log No Spring WebApplicationInitializer types detected on classpath06-May-2017 16:33:17.397 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log Initializing Spring root WebApplicationContext06-May-2017 16:33:18.951 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log Initializing Spring FrameworkServlet 'dispatcherServlet'        06-May-2017 16:33:33.197 SEVERE [localhost-startStop-1]org.apache.catalina.core.ApplicationContext.log StandardWrapper.Throwable org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.springframework.aop.support.AopUtils.selectInvocableMethod(Ljava/lang/reflect/Method;Ljava/lang/Class;)Ljava/lang/reflect/Method;    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1589)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759)    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)    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:1227)    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1140)    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1027)    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5038)    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5348)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)    at java.util.concurrent.FutureTask.run(FutureTask.java:262)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)    at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.NoSuchMethodError: org.springframework.aop.support.AopUtils.selectInvocableMethod(Ljava/lang/reflect/Method;Ljava/lang/Class;)Ljava/lang/reflect/Method;    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:248)    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214)    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184)    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:127)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1648)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1585)

谷歌了一段时间说是jar包冲突，于是到lib下，发现多了一个Spring-2.5.6.SEC03.jar包，原来maven在下载dubbo 依赖时自动引入了这个jar包，修改pom中dubbo依赖，如下：

<dependency>  <groupId>com.alibaba</groupId>  <artifactId>dubbo</artifactId>  <version>2.5.3</version>  <exclusions>    <exclusion>      <groupId>org.springframework</groupId>      <artifactId>spring</artifactId>    </exclusion>  </exclusions></dependency>

重新部署，搞定。