一下是我启动时控制台报的错误：
信息: Server startup in 115 ms
Connected to server
[2017-03-19 12:28:48,122] Artifact RobotMonitoringSystem:war exploded: Artifact is being deployed, please wait...
三月 19, 2017 12:28:50 上午 org.apache.catalina.startup.TldConfig execute
信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
三月 19, 2017 12:28:51 上午 org.apache.catalina.core.StandardContext startInternal
严重: One or more listeners failed to start. Full details will be found in the appropriate container log file
三月 19, 2017 12:28:51 上午 org.apache.catalina.core.StandardContext startInternal
严重: Context [/RobotMonitoringSystem] startup failed due to previous errors
contex
1111
[2017-03-19 12:28:51,148] Artifact RobotMonitoringSystem:war exploded: Error during artifact deployment. See server log for details.
Exception in thread "CometConnectorCleaner Thread" java.lang.NullPointerException
at org.comet4j.core.CometConnector$CacheCleaner.checkExpires(CometConnector.java:120)
at org.comet4j.core.CometConnector$CacheCleaner.run(CometConnector.java:113)
at java.lang.Thread.run(Thread.java:745)
三月 19, 2017 12:28:57 上午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory D:\Tomcat\apache-tomcat-7.0.70\webapps\manager
三月 19, 2017 12:28:58 上午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deployment of web application directory D:\Tomcat\apache-tomcat-7.0.70\webapps\manager has finished in 472 ms
tomcat localhost log中的信息：
三月 19, 2017 12:28:51 上午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
三月 19, 2017 12:28:51 上午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;Ljava/lang/Throwable;)V
