信息: Initializing Spring FrameworkServlet 'springServlet'

记一次BUG解决过程

1.环境：

SpringMVC+MyBatis开发，Tomcat-7.0环境，1.7JDK

2.问题：

Tomcat启动SpringMVC项目，好好的突然就启动不了了，`信息: Initializing Spring FrameworkServlet 'springServlet'`然后啥信息也没了， tomcat启动日志没报错， 只是傻傻的告诉我，启动超时时间45s，无法启动tomcat服务，本来就只是打算自己独立做的东西，偏偏被这么个小问题卡住，搜了很多地方，都不管用。

3.解决：

1.首先我仔仔细细查看了tomcat日志、项目日志，logback日志打印级别DEBUG，然而并没有异常信息。2.然后确认了一下配置文件是否在，初始化web.xml的时候有没有被加载，燃鹅也是被加载成功的。3.仔细检查Spring配置，网上很多说要改`</mvc:annotation-driven>`,好吧改了，因为之前一直都可以的.对这个改法也没有报太大希望，果不其然， 没啥用改的。下图是原来的：

    <mvc:annotation-driven>        <mvc:message-converters>            <bean class="org.springframework.http.converter.StringHttpMessageConverter">                <constructor-arg value="UTF-8" />                <property name="supportedMediaTypes">                    <list>                        <bean class="org.springframework.http.MediaType">                            <constructor-arg index="0" value="text" />                            <constructor-arg index="1" value="plain" />                            <constructor-arg index="2" value="UTF-8" />                        </bean>                            <bean class="org.springframework.http.MediaType">                            <constructor-arg index="0" value="*" />                            <constructor-arg index="1" value="*" />                            <constructor-arg index="2" value="UTF-8" />                        </bean>                    </list>                </property>            </bean>        </mvc:message-converters>    </mvc:annotation-driven>

4.有查到说跟xsd的加载有关，具体说是，spring优先加载本地的，如果没有则会请求网络资源,如果恰好网络不太行，然后就会卡着了，感觉不靠谱这个说法，但还是赶紧试了试，挨个把jar包确认一遍，网速咱也是杠杠的，好家伙还是不行啊。5.本能的想到jar包可能有毒，换一套spring的jar包试试，4.1换成4.0，好吧还是不行。**(最终解决):**6.历经沧桑，最终我找到了曾经封印的tomcat7压缩包，换掉了看起来一模一样Tomcat，然后部署项目，启动，终于看到了一大堆的堆栈异常，简直不要太亲切好不好，此刻！！！

信息: JUL to SLF4J bridge is not available on the classpath四月 27, 2017 12:16:49 上午 org.apache.catalina.core.ApplicationContext log信息: Initializing Spring FrameworkServlet 'springServlet'四月 27, 2017 12:16:49 上午 org.springframework.web.servlet.FrameworkServlet initServletBean信息: FrameworkServlet 'springServlet': initialization started四月 27, 2017 12:16:49 上午 org.springframework.context.support.AbstractApplicationContext prepareRefresh信息: Refreshing WebApplicationContext for namespace 'springServlet-servlet': startup date [Thu Apr 27 00:16:49 CST 2017]; parent: Root WebApplicationContext四月 27, 2017 12:16:49 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions信息: Loading XML bean definitions from class path resource [spring/spring-servlet.xml]四月 27, 2017 12:16:50 上午 org.springframework.web.servlet.FrameworkServlet initServletBean严重: Context initialization failedorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.config.internalAutoProxyCreator': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/aopalliance/intercept/MethodInterceptor    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1076)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1021)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)    at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:220)    at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:618)    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:467)    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:1282)    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1195)    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1085)    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5349)    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5641)    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1260)    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2002)    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)    at java.util.concurrent.FutureTask.run(FutureTask.java:262)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)    at java.lang.Thread.run(Thread.java:744)Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/aopalliance/intercept/MethodInterceptor    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:164)    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1069)    ... 33 moreCaused by: java.lang.NoClassDefFoundError: org/aopalliance/intercept/MethodInterceptor    at org.springframework.aop.framework.adapter.DefaultAdvisorAdapterRegistry.<init>(DefaultAdvisorAdapterRegistry.java:50)    at org.springframework.aop.framework.adapter.GlobalAdvisorAdapterRegistry.<clinit>(GlobalAdvisorAdapterRegistry.java:32)    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.<init>(AbstractAutoProxyCreator.java:122)    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.<init>(AbstractAdvisorAutoProxyCreator.java:48)    at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.<init>(AspectJAwareAdvisorAutoProxyCreator.java:47)    at org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator.<init>(AnnotationAwareAspectJAutoProxyCreator.java:49)    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:148)    ... 35 moreCaused by: java.lang.ClassNotFoundException: org.aopalliance.intercept.MethodInterceptor    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1891)    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1734)    ... 46 more四月 27, 2017 12:16:50 上午 org.apache.catalina.core.ApplicationContext log严重: StandardWrapper.Throwable