Creating a Web Application with Struts 2.x - Genuitec

 

application web java struts

Welcome to the first in a series of articles on Jakarta Struts (or simply, "Struts"), the Java/JSP-based framework for building Web-based applications. While later articles will get deep into the technology behind Struts, this first article provides an introduction to Struts and evaluates the case for using it. Struts tutorial article is aimed to provide basic details of Struts 2 and how we can create our first “Hello World” Struts 2 application. Struts 2. Apache Struts 2 is an open source, industry standard, flexible and extendable framework to build Java EE web application. Struts 2 is based on OpenSymphony WebWork framework. Struts 2 is very. As you have already learnt from the Struts 2 architecture, when you click on a hyperlink or submit an HTML form in a Struts 2 web-application, the input is collected by the Controller which is sent to a Java class called Actions. After the Action is executed, a result selects a resource to render.


Login Form Example in Struts | Java Web Tutor


You will learn how to:. The project created in this tutorial is available at Sample Struts 2 Project. The structure of the new Struts 2 project is shown in the image below. By default, Struts 2 Core Libraries Classpath container is added to the project. You can select multiple Struts 2 classpath containers from the add Struts 2 capabilities wizard shown above.

Struts project structure. The flow of the sample blog application starts with the index. The login page contains user login and password fields. On entering a valid username and password, the request is passed to the Admin page that contains options to create, review, and delete blog posts. An error message appears in the login page for invalid username or password value.

Begin with creating a package to group a set of actions together, application web java struts. The value in the Extends field sets the extends relationship between packages.

You can use the Add button to select from a list of packages to extend. A graphical representation for the Struts 2 package component appears in the Flow editor.

A new package entry is automatically added to the struts, application web java struts. You can view the source by clicking the Source tab in the editor.

Package component displayed in the Flow and Source views. Struts 2 actions are the fundamental units of the framework.

An action element represents the mapping between the identifier and the handler class. The framework uses this mapping to determine how to process the request.

Create an action that processes the request to open the login page. Action component displayed in the Flow and Source views. In this application, you create a set of JSP pages. First you will create loginPage. An action result represents a possible application web java struts of application web java struts operation. An action mapping often contains a set of results. The action handler method returns a String that is used by the framework to select the result element. In this application, the ShowLoginPage action contains a single result with the name success and type dispatcherwhich forwards the request to another web resource, in this case loginPage.

Result component displayed in the Flow and Source views. The following snippets show the contents of the loginPage. Your Internet Explorer version is not compatible application web java struts our shopping cart system.

Please use version 9 or higher to avoid problems with your order s. Creating a Web Application with Struts 2. Create a Struts 2 Project C 2. Create a Package C 3. Create an Action C 4. Create a Result C 6. Add Authentication Nodes A 7. Add the Blog Page A 8. Deploy and Test the Application D, application web java struts.

For prior versions, click here. Click Finish to accept the default settings. Struts configuration The structure of the new Struts 2 project is shown in the image below. Create a Package The flow of the sample blog application starts with the index. Click Finish. Adding a Struts 2 package The value in the Extends field sets the extends relationship between packages. You can edit the Struts 2 configuration file in the Source editor. For instance, you can add a new package entry in application web java struts configuration file, application web java struts, and then switch to the Flow editor to view the graphical representation of the package component.

The two editors Source and Flow can be used interchangeably as needed. Create an Action Struts 2 actions are the fundamental units of the framework. Type ShowLoginPage in the Name field, com. ShowLoginPage in the Class field, and click Finish.

Creating a Struts 2 action Package name: The package to contain the new action. A new package can be created using the New button. Name: The name of the action. Action class: Used for mapping an action handler with the action identifier.

You can create a new handler or map to an existing handler class. Class: The action handler class, application web java struts. Selecting the Existing Class option enables the Browse button. Parameters: Shows the list of action parameters.

Results: Shows the list of Application web java struts in the action. A new Package entry is added to the struts. A handler class is created in the Java package com. Type loginPage. Create a Result An action result represents a possible outcome of an operation, application web java struts. Application web java struts a new Result component Name: The name of the action result. You can choose between the standard set of result tokens or set a custom name. Result type: Drop-down menu for choosing the type of result.

Location: Web resource to render the outcome of the operation. Parameters: List of result parameters. A graphical representation for the Struts 2 Result component appears in the Action node in the Flow editor.

A new Result entry is added to the struts. Add Authentication Nodes Use the skills learned in the previous sections to add additional nodes to the flow. This package groups the actions dealing with security. To keep things simple, you create a single action that performs the task of validating the username and password values. For invalid credentials, application web java struts, the request returns to the login page and an error message displays in the login page.

Create an action named AuthenticateUser in the secure package. Specify the value for the class field as com. This adds an action to the package and creates a new handler Java class named AuthenticateUser in the Java package com. Add two results to the action. Name the first result error of the application web java struts type that forwards the result to the login page. Name the second result success of the redirectAction type. This result redirects the request to another page that contains options to create, review, and delete blogs.

You will do this in later sections after creating the remaining components of the application. Addition of new components Double-click the AuthenticateUser action to open it in the editor. Copy and paste the following code into the file, replacing the default code.

ActionSupport. Please try again! Creation an action in the blogging package named ShowBlogAdminPage that will do a simple job of forwarding the request to the blogAdminPage. The success result in the above section inside the AuthenticateUser action is mapped to this action. The framework forwards the request to this action if the validation succeeds. The following image shows how you can use the redirect action result type.

Set the handler names same to be the same as the action names. Create these actions under the package com. Add a new Result with name success of the dispatcher type in application web java struts CreateBlogPost action. Forward the result in the ReviewPostsPage. The figure below shows the final result of all the above operations.

Final flow The following snippets show the contents of the loginPage. Select the MyEclipse Tomcat Server.

 

Steps to create struts 2 application example Tutorial - javatpoint

 

application web java struts

 

Mar 01,  · Find Java Struts tutorial to learn how to create Struts Java ee 7 web application project in NetBeans IDE and GlassFish Web application Server. Learn Java web application development using Struts Framework. Netbeans IDE Tutorial, Struts tutorial, Java Server, Java EE 7 tutorials, Struts framework tutorial, Strut, java framework, java struts, struts java, java web action, Struts web application. Jul 17,  · In this tutorial we will create a hello world Struts application in Eclipse editor.I have used Eclipse Indigo and Tomcat 6 for developing this example. We are going to implement a web application using Struts framework which will display Hello World in Browser. Welcome to the first in a series of articles on Jakarta Struts (or simply, "Struts"), the Java/JSP-based framework for building Web-based applications. While later articles will get deep into the technology behind Struts, this first article provides an introduction to Struts and evaluates the case for using it.