parameter attribute problem in struts1.2 __struts1.2

On the problem of parameter parameters in <action>
<action parameter= "Method" >.....</action>
Front-end Code
<from action= "/login.do?method=" MyMethod ">
If/login.do's action inherits the action class, the method that he executes by default is the Execute method
But if you want to invoke a custom method, here the action will inherit the Dispatcheraction class, which calls the MyMethod method in the action

In contrast to struts2, the STRUTS2 implementation calls the custom method simply by adding <action method= "method Name" > Properties. If no method is added, the default Execute method is also invoked