启动cas的tomcat后，访问不了

21-Jan-2019 09:50:35.037 警告 [main] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [cas] appears to have started a thread named [scheduler_Worker-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Object.wait(Native Method)

• 找不到原因。重启了3次tomcat，可以了。