How to write action class in struts 2 select

Time to ride on out and check up on the progress of our cowpokes.

First link explains the topic and there is an example at second link. I wrote below an explanation taken from there: Configuring the framework The first, and most important configuration, is the one that enables the web application framework within the servlet containers web.

The configuration that everyone should be familiar with for Struts is: The most significant is that the dispatcher has been changed from a servlet to a servlet filter.

The configuration is just as easy as for a servlet, and shown here: Let's take it a step deeper now, and look at the differences between the structures of the actions in each framework. Let's first review the general structure of the Struts action.

The general form of the Struts action looks like this: All actions have to extend the Action base class. All actions have to be thread-safe, as only a single action instance is created. Because the actions have to be thread-safe, all the objects that may be needed in the processing of the action are passed in the method signature.

The name of the method that is invoked for the processing of the action is "execute" there is a DispatchAction class available in Struts which can re-route the method to be executed to another method in the same action, however the initial entry point from the framework into the action is still the "execute" method.

An ActionForward result is returned using a method from the ActionMapping class, most commonly via the "findForward" method call. In contrast, the Struts2 action provides a much simpler implementation. Here's what it looks like: In fact, it goes further than this. By convention, the method invoked in the processing of an action is the "execute" method - but it doesn't have to be.

Any method that follows the method signature public String methodName can be invoked through configuration. Finally, and perhaps the most revolutionary difference from the original Struts implementation, is that the method invoked in the processing of an action the "execute" method has no parameter.

We end the class name with Action to inform struts that this Java file should be considered as a Struts 2 Action. We provide the implementation of the method public String execute() to fulfil the contract for a struts 2 action [which is to implement initiativeblog.com]. Hello Everyone, I tried two approaches to export CSV data and each one gives a different issue. Approach 1 - Using a Struts Action class and Servlet Here the problem is when i export the file, it. The action class contains business logic, retrieve resource bundle, hold the data, validation, and select the view result page that should send back to the user. It’s the heart of the Struts 2, so you have to understand the basic concept of actions.

So how do you get access to the objects that you need to work with? The answer lies in the "inversion of control" or "dependency injection" pattern for more information Martin Fowler has an informative article at http: The Spring Framework has popularized this pattern, however, the predecessor to Struts2 WebWork started using the pattern around the same time.Struts 2 in Action [Don Brown, Chad Michael Davis, Scott Stanlick] on initiativeblog.com *FREE* shipping on qualifying offers.

The original Struts project revolutionized Java web development and its rapid adoption resulted in the thousands of Struts-based applications deployed worldwide.

Keeping pace with new ideas and trends. Hello Java4s, I was the person who first commented this article. You are doing a great job by making us learn java in an easy manner.

I just wanted to know that the coding methods/standards presented in this article is depicting to what coding standards industry follows.

Under src directory, create a new Java package called initiativeblog.com project’s initial structure should look like this: Adding Tomcat server Skip this step you have Tomcat already appears in the Servers view.. Switch to Server views (Select Windows > Show View > Others > Servers from main menu).

Right click in the Servers view, select New > Server. Apache Struts 2 Web Application Development [Dave Newton] on initiativeblog.com *FREE* shipping on qualifying offers.

This book takes a clear approach, focusing on one topic per chapter, but interspersing other issues in the mainline text and in chapter detours. Taking a practical approach.

We end the class name with Action to inform struts that this Java file should be considered as a Struts 2 Action. We provide the implementation of the method public String execute() to fulfil the contract for a struts 2 action [which is to implement initiativeblog.com].

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