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

时间：2016-08-07 01:39:15

标签： java spring log4j spymemcached

我添加到Java opts -Dnet.spy.log.LoggerImpl = net.spy.memcached.compat.log.SLF4JLogger 设置spymemcached以使用slf4j作为记录器。但我在tomcat6日志中收到以下警告，我对错误感到疑惑

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

怎么可能找不到类SLF4JLogger。初始化LoggerFactory意味着net.spy包可用，更常见的是间谍memcache jar可用。那怎么可能找不到另一个班级呢。

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)

1 个答案:

答案 0 :(得分：4)

如果$percentage = array(0.2,0.4,0.5,0.6,0.7,0.8); for($i=0;$i<6;$i++){ echo "<div class='outter'> <div class='inner'>"; echo $percentage[$i]; echo " </div> </div>"; echo "<style type='text/css'>"; echo ".outter{height:25px;width:500%;border-right:solid 1px #000;}"; echo ".inner{height:25px;width:";echo $percentage[i]; echo "%;border-right:solid 1px #000;background-color:#02abff;}"; echo "</style>"; } 正在抛出WebAppClassLoader，那么该类不在您的网络应用程序中。在撰写本文时，获取ClassNotFoundException客户端jar（latest version）的2.12.1并将其放入Web应用程序的spymemcached目录中。从该目录中删除任何其他WEB-INF/lib jar以避免类加载冲突。

在版本2.9.0之前未引入

spymemcached，因此，如果您使用的是net.spy.memcached.compat.log.SLF4JLogger的旧版本，则可以解释为什么它可以找到net.spy:spymemcached而不是LoggerFactory {1}}。

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