java.lang.ClassNotFoundException:net.spy.memcached.compat.log.SLF4JLogger

我添加到Java opts-Dnet.spy.log.LoggerImpl=net.spy.memcached.compat.log.SLF4JLogger 将SpymeMached设置为使用slf4j作为记录器。但是我在tomcat6日志中得到了以下警告，我对错误感到困惑

net.spy.memcached.compat.log.SLF4JLogger not found while initializing net.spy.compat.log.LoggerFactory java.lang.ClassNotFoundException: net.spy.memcached.compat.log.SLF4JLogger

怎么可能找不到SLF4JLOGER类。它正在初始化LoggerFactory，这意味着net.spy包是可用的，更一般地说，spy memcache jar是可用的。那么它怎么可能找不到另一个类呢

log4j: setFile ended log4j: Adding appender named [SecurityAuditAppender] to category [SecurityAuditLogger]. Warning:  net.spy.memcached.compat.log.SLF4JLogger not found while initializing net.spy.compat.log.LoggerFactory java.lang.ClassNotFoundException: net.spy.memcached.compat.log.SLF4JLogger
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:191)
        at net.spy.memcached.compat.log.LoggerFactory.getConstructor(LoggerFactory.java:131)
        at net.spy.memcached.compat.log.LoggerFactory.getNewInstance(LoggerFactory.java:115)
        at net.spy.memcached.compat.log.LoggerFactory.internalGetLogger(LoggerFactory.java:98)
        at net.spy.memcached.compat.log.LoggerFactory.getLogger(LoggerFactory.java:87)
        at net.spy.memcached.compat.log.LoggerFactory.getLogger(LoggerFactory.java:73)
        at net.spy.memcached.compat.SpyThread.getLogger(SpyThread.java:60)
        at net.spy.memcached.MemcachedConnection.createConnections(MemcachedConnection.java:152)
        at net.spy.memcached.MemcachedConnection.<init>(MemcachedConnection.java:128)
        at net.spy.memcached.DefaultConnectionFactory.createConnection(DefaultConnectionFactory.java:176)
        at net.spy.memcached.MemcachedClient.<init>(MemcachedClient.java:193)
        at net.spy.memcached.spring.MemcachedClientFactoryBean.getObject(MemcachedClientFactoryBean.java:72)
        at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
        at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1442)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:248)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1360)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
        at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
        at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
        at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4210)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4709)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:583)
        at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:675)
        at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:601)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:822)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
        at org.apache.catalina.core.StandardService.start(StandardService.java:525)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

log4j:setFile结束log4j:将名为[SecurityAuditAppender]的appender添加到类别[SecurityAuditLogger]。警告：初始化net.spy.compat.log.LoggerFactory java.lang.ClassNotFoundException:net.spy.memcached.compat.log.SLF4JLogger时未找到net.spy.memcached.compat.log.SLF4JLogger
位于org.apache.catalina.loader.WebappClassLoader.loadClass（WebappClassLoader.java:1680）
位于org.apache.catalina.loader.WebappClassLoader.loadClass（WebappClassLoader.java:1526）
位于java.lang.Class.forName0（本机方法）
位于java.lang.Class.forName（Class.java:191）
位于net.spy.memcached.compat.log.LoggerFactory.getConstructor（LoggerFactory.java:131）
位于net.spy.memcached.compat.log.LoggerFactory.getNewInstance（LoggerFactory.java:115）
位于net.spy.memcached.compat.log.LoggerFactory.internalGetLogger（LoggerFactory.java:98）
位于net.spy.memcached.compat.log.LoggerFactory.getLogger（LoggerFactory.java:87）
位于net.spy.memcached.compat.log.LoggerFactory.getLogger（LoggerFactory.java:73）
位于net.spy.memcached.compat.SpyThread.getLogger（SpyThread.java:60）
位于net.spy.memcached.MemcachedConnection.createConnections（MemcachedConnection.java:152）
位于net.spy.memcached.MemcachedConnection。（MemcachedConnection.java:128）
位于net.spy.memcached.DefaultConnectionFactory.createConnection（DefaultConnectionFactory.java:176）
位于net.spy.memcached.MemcachedClient。（MemcachedClient.java:193）
位于net.spy.memcached.spring.MemcachedClientFactoryBean.getObject（MemcachedClientFactoryBean.java:72）
位于org.springframework.beans.factory.support.FactoryBeanRegistrySupport.dogetObject fromFactoryBean（FactoryBeanRegistrySupport.java:142）
位于org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean（FactoryBeanRegistrySupport.java:102）
位于org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance（AbstractBeanFactory.java:1442）
位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:248）
位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）
位于org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference（BeanDefinitionValueResolver.java:322）
在org.springframework.beans.factory.support.BeanDefinitionValueResolver.ResolveValueIfNeeded上（BeanDefinitionValueResolver.java:106）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1360）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1118）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:517）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:456）
位于org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject（AbstractBeanFactory.java:294）
位于org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:225）
位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:291）
位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）
位于org.springframework.beans.factory.support.DefaultListableBeanFactory.PreInstanceSingleton（DefaultListableBeanFactory.java:585）
位于org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:913）
位于org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:464）
位于org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext（ContextLoader.java:385）
位于org.springframework.web.context.ContextLoader.initWebApplicationContext（ContextLoader.java:284）
位于org.springframework.web.context.ContextLoaderListener.contextInitialized（ContextLoaderListener.java:111）
位于org.apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4210）
位于org.apache.catalina.core.StandardContext.start（StandardContext.java:4709）
位于org.apache.catalina.core.ContainerBase.addChildInternal（ContainerBase.java:799）
位于org.apache.catalina.core.ContainerBase.addChild（ContainerBase.java:779）
位于org.apache.catalina.core.StandardHost.addChild（StandardHost.java:583）
位于org.apache.catalina.startup.HostConfig.deployDescriptor（HostConfig.java:675）
位于org.apache.catalina.startup.HostConfig.deployDescriptors（HostConfig.java:601）
位于org.apache.catalina.startup.HostConfig.deployApps（HostConfig.java:502）
位于org.apache.catalina.startup.HostConfig.start（HostConfig.java:1317）
位于org.apache.catalina.startup.HostConfig.lifecycleEvent（HostConfig.java:324）
位于org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent（LifecycleSupport.java:142）
位于org.apache.catalina.core.ContainerBase.start（ContainerBase.java:1065）
位于org.apache.catalina.core.StandardHost.start（StandardHost.java:822）
mvn dependency:tree -Dverbose -Dincludes=spymemcached

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>3.0.3.RELEASE</version>
    <exclusions>
      <exclusion>
             <groupId>net.spy</groupId>
             <artifactId>spymemcached</artifactId>
      </exclusion>
    </exclusions>
</dependency