Tomcat calls a specified class at the beginning of the service.

This is caused:

The company's project uses its own framework, which is said to have started in and is now very powerful.

Today, we found that some classes will initialize and execute some SQL statements when starting tomcat. I'm wondering, isn't there a ghost?
Google and find the reason.
There is a configuration listener in Web. xml.
<Listener>
<Listener-class> test </listener-class>
</Listener>
 
You can configure a listener class so that the class will be automatically initialized after Tomcat is started.

 

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