商品的图片出来了 但是 一会就消失 这是控制台 的错误信息

严重: The web application [/JspViewListDemo] registered the JDBC driver [com.mysql.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.

2017-4-12 15:02:52 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads

严重: The web application [/JspViewListDemo] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.

2017-4-12 15:02:53 org.apache.catalina.startup.TldConfig execute