Log4j

tomcat运行两个应用抛出“Choose unique values for the 'webAppRootKey' context-param in your web.xml files!” 错误信息

本文将介绍 tomcat 同时启动两个 app 应用时，抛出 “java.lang.IllegalStateException: Web app root system property already set to different value: 'webapp.root' = [****] instead of [****] - Choose unique values for the 'webAppRootKey' context-param in your web.xml files!” 错误信息。