别沉啊，帮忙看看，实在无从下手了

严重: The web application [/ajgl] registered the JDBC driver [org.mariadb.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
十一月 16, 2017 10:51:43 上午 org.apache.catalina.loader.WebappClassLoaderBase checkThreadLocalMapForLeaks
严重: The web application [/ajgl] created a ThreadLocal with key of type [org.apache.axis.utils.XMLUtils.ThreadLocalDocumentBuilder] (value [org.apache.axis.utils.XMLUtils$ThreadLocalDocumentBuilder@6deca583]) and a value of type [com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl] (value [com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl@4b6673d6]) 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.
[2017-11-16 10:51:43,126] Artifact newspgl:war exploded: Error during artifact deployment. See server log for details.