启动Tomcat报错- jar not loaded. Offending class: javax/servlet/Servlet.class

完整错误信息：

 - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class - 严重: Error listenerStart2016-6-7 15:29:49 org.apache.catalina.core.StandardContext start严重: Context [] startup failed due to previous errors2016-6-7 15:29:49 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc严重: The web application [] registered the JDBC driver [org.h2.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.2016-6-7 15:29:49 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads严重: The web application [] appears to have started a thread named [C3P0PooledConnectionPoolManager[identityToken->1hge8v49hbl77381hciwrk|1531164]-DeferredStatementDestroyerThread-#0] but has failed to stop it. This is very likely to create a memory leak.2016-6-7 15:29:49 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads严重: The web application [] appears to have started a thread named [H2 File Lock Watchdog F:……2016-6-7 15:29:49 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads严重: The web application [] appears to have started a thread named [Resource Destroyer in BasicResourcePool.close()] but has failed to stop it. This is very likely to create a memory leak.

这是tomcat错误日志

根据日志显示（Offending class: javax/servlet/Servlet.class）可能是jar包重复了

然后看了项目和tomcat中都有servlet-api.jar

然后把项目中的jar包删掉重新启动

项目正确打开