I am starting to learn Struts 2. I stumbled upon this code:
web.xml
...some other codes...
<filter>
<filter-name>MyFilter</filter-name>
<display-name>MyFilter</display-name>
<filter-class>com.xxx.yyy.zzz.MyFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>MyFilter</filter-name>
<servlet-name>MyAction</servlet-name>
</filter-mapping>
<listener>
<listener-class>com.xxx.yyy.StrutsListener</listener-class>
</listener>
<servlet>
<servlet-name>MyAction</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>paramName1param-name>
<param-value>paramVal1</param-value>
</init-param>
<init-param>
<param-name>paramName2</param-name>
<param-value>paramVal2</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
...some other codes...
My question is in this part
<filter-mapping>
<filter-name>MyFilter</filter-name>
<servlet-name>MyAction</servlet-name>
</filter-mapping>
Why is it a servlet being mapped inside a <filter-mapping> tag? What does this kind of mapping imply? Also, what does <listener> do? Thanks for the replies.
