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copied!<p>It's possible to do things differently but lets say you let struts2 handle all the requests. Everything that struts2 handles is an "action". </p> <p>Don't worry about GET or POST they are just two different methods of sending data to an action, if there are parameters (regardless if they are get or set) then struts2 will try to place that data onto the actions class (assuming there is one). If there is a validation method (or a properly named validation xml file) then validation will be run after the class properties are set. Then the execute() method for the class is called (assuming there is a class). After this a jsp is typically rendered which has at its disposal all the public data in the action's method.</p> <p>Take your "showForm" action... you can reduce the xml to:</p> <pre><code><action name="showForm"> <result>inputForm.jsp</result> </action> </code></pre> <p>You can see you don't need to define a class. Further the default result is success so we don't need to mention that either.</p> <p>So when thinking of hmtl we would think in terms of pages. When thinking in struts we think in terms of actions, they only need to be as complicated as necessary. That is if you need to show a form then you need a show form action, if you want a display page that uses the form data then you need a "displayPage" action which does something with the form data.</p> <p>So think of each action as starting with a url > ----------- > ending with returning date (generally rendering a jsp). The dashes are the optional parts that you may define, but if you don't they will sensibly default for you. To see what features are provided to you you'll need to look in struts2-core-x.x.x.x.jar and view the contents of the struts-default.xml that is where "defaultStack" is defined. Each interceptor in turn is called, knowing what they offer (and the other interceptors offer) let you know what you get out of the box (I wouldn't look into them too deeply just know they are there so you'll know for instance that if you need to upload a file the simple fact that the "fileUpload" intercepter is in the default stack should be indication enough that there must be built in file uploading capabilities.</p> <p>So no there is not a "false action" to the input form. It is a real action abet a simple one. After you learn how to define packages, actions, default actions for a package and perhaps globally and learn how to define an interceptor then you should look at the conventions plug in. It makes life a lot easier!</p>

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