SEVERE [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [ROOT] created a ThreadLocal with key of type java.lang.ThreadLocal and a value of type io.netty.util.internal.InternalThreadLocalMap but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
tomcat配置jvm参数了么，