ACTION STRINGS TUTORIAL HOW TO
ACTION STRINGS TUTORIAL CODE

Try showing just the userName value on the view page. On the view page, HelloWorld.jsp, you can also access the userName value by using the Struts 2 property tag (see tutorial Using Struts 2 Tags). Since the query string parameter is userName, Struts passed the value of that parameter to the setUserName method. If you click on that link you should see the following result: On the index.jsp we also have a Struts 2 action link (see tutorial Using Struts 2 Tags) that includes a query string parameter: userName=Bruce+Phillips. So in this example method setUserName was called and passed the value the user entered in the userName form field. When the form is submitted, Struts will call any set methods of the HelloWorldAction class that match the form field names. Enter your name in the form and click the submit button. Now build and run ( mvn jetty:run) the application. The method execute is where we placed what we want this controller to do in response to the hello.action. If you examine class HelloWorldAction from tutorial Using Struts 2 Tags youвЂ™ll see that it extends the class ActionSupport and then overrides method execute.

When your Action class extends class ActionSupport your class can either override the default implementations or inherit them. execute, input) and also implements several useful Struts 2 interfaces. Class ActionSupport provides default implementations for the most common actions (e.g. Struts 2 Action classes usually extend the ActionSupport class, which is provided by the Struts 2 framework. Action classes respond to a user action, execute business logic (or call upon other classes to do that), and then return a result that tells Struts what view to render. Struts 2 Action ClassesДЄction classes act as the controller in the MVC pattern. This tutorial will introduce you to the basics of writing the controller logic in the Action class. The Action mapping above also specified that if the execute method of class HelloWorldAction returns success then the view HelloWorld.jsp will be returned to the browser.

ACTION STRINGS TUTORIAL HOW TO

In the previous tutorials we covered how to configure Struts to map a URL such as hello.action to an Action class such as HelloWorldAction (specifically the execute method).

Writing the controller logic in the Action class.

ACTION STRINGS TUTORIAL CODE

The example code for this tutorial, coding-actions, is available for checkout from the Struts 2 GitHub repositoryД¬oding a Struts 2 Action involves several parts: This tutorial assumes youвЂ™ve completed the Using Struts 2 Tags tutorial and have a working using-tags Processing Form Input In The Action Class.

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Action strings tutorial