{"timeMillis":1524569559646,"thread":"StatLog","level":"INFO","loggerName":"debug_stat","message":"[]","endOfBatch":false,"loggerFqcn":"org.apache.logging.slf4j.Log4jLogger","threadId":65,"threadPriority":5}
    at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1316)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1175)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1136)
    at com.meitu.commons.utils.StatLog.statJsonExecutor(StatLog.java:363)
    at com.meitu.commons.utils.StatLog.run(StatLog.java:272)
    at java.lang.Thread.run(Thread.java:748)

Exception in thread "StatLog" java.lang.NoClassDefFoundError: com/meitu/commons/utils/json/JsonBuilder
    at com.meitu.commons.utils.StatLog.statJsonExecutor(StatLog.java:363)
    at com.meitu.commons.utils.StatLog.run(StatLog.java:272)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: Illegal access: this web application instance has been stopped already. Could not load [com.meitu.commons.utils.json.JsonBuilder]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
    at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1318)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1175)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1136)
    ... 3 more
Caused by: java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [com.meitu.commons.utils.json.JsonBuilder]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
    at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1328)
    at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1316)
    ... 5 more
/Users/pro/Documents/devops/apache-tomcat-8.5.30/bin/catalina.sh stop

说明tomcat已经停止运行，查看tomcat日志