Severe: exception sending context initialized event to listener instance of class org. springframework. We

I encountered the following situation:

Running normally a few days agoProgramThis exception occurs when I run it again today. I'm sure I haven't modified the program. I don't know why this problem occurs.

 

Solution: delete all the jar files and add all the spring packages, struts2 packages, and hibernate packages again. Because MySQL is used, the MySQL driver package is added.

In addition this program uses the DBCP connection pool, so added a commons-dbcp.jar and commons-pool.jar re-release program, OK.