Web. XML calls Java class method at startup

<listener>
<listener-class>com.test</listener-class>//This class identifies the Java classpath to be executed on the web. XM inside Configuration
</listener>

Public abstract class Smslisteneradapter implements Servletcontextlistener {//Integrated listening interface
@Override
public abstract void contextinitialized (Servletcontextevent SCE);//This method is to invoke the method
@Override
public void contextdestroyed (Servletcontextevent sce) {

}

Import javax.servlet.ServletContextEvent;

/**
* Created by Panhaicheng on 14-8-20.
*/
public class Smslistener extends Smslisteneradapter {
@Override
public void contextinitialized (Servletcontextevent sce) {//Override this method
Cacheutil.puttomap (); The static method to execute
}
}

Web. XML calls Java class method at startup