Struts was the initial implementation of MVC design pattern and it has evolved a lot along with latest enhancements in Java, Java EE technologies. Struts tutorial article is aimed to provide basic details of Struts 2 and how we can create our first “Hello World” Struts 2 application.
Apache Struts 2 is an open source, industry standard, flexible and extendable framework to build Java EE web application. Struts 2 is based on Open Symphony Web Work framework. Struts 2 is very flexible in terms of development and configurations and we will see how easy it is to develop a web application using Struts 2 framework. The Apache Struts web framework is a free open-source solution for creating Java web applications. It provides various components that can be used to develop MVC based web applications that are easy to develop and maintain.
This advanced course shows JSP and servlet programmers how to build web applications using the Apache Struts framework. Learner learn the Struts architecture and see how it captures a great deal of pre-existing best practice: in model-view-controller action mappings, form beans, custom tags for working with HTML forms, input validation, and the Tiles view-building framework. This Struts 1.3 and 2.0 version of the course illustrates the use of Struts 1.3 in detail and 2.0.
- Java™ beans
- Java servlets
- JavaServer Pages (JSP)
- Training mode
- Corporate Training
- 6 Months Practical Classes
- In Class, You Get In-Depth Practical Knowledge on every Topic
- Weekdays Classes Available
- Weekend Classes Available
- Corporate Training Available
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- Attend 1st Class Free
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Syllabus – What you will learn from this course
1. Overview of the MVC design pattern
The model-view-controller design pattern, also known as Model 2 in J2EE application programming, is a well-established design pattern for programming. Table 1 summarizes the three main components of MVC.
2. Model 1 versus Model 2
The Model 1 and Model 2 architectures both separate content generation (business logic) from the content presentation (HTML formatting). Model 2 differs from Model 1 in the location where the bulk of the request processing is performed: by a controller rather than in the JSP pages.
3. The Struts implementation of Model 2
The Struts implementation of Model 2 uses a specific type of servlet, called an action servlet, and one or more actions and action mappings to implement the controller. It also uses a specific type of Java bean, called a form bean. As illustrated in Figure 3, the web server at run time contains both the view and controller components of a Model 2 web application, while a third tier (which is usually outside of the web server) contains the model.
4. Benefits of the MVC design pattern
The application of the model-view-controller division to the development of dynamic web applications has several benefits:
- You can distribute development effort to some extent, so that implementation changes in one part of the web application do not require changes to another. The developers responsible for writing the business logic can work independently of the developers responsible for the flow of control, and web-page designers can work independently of the developers.
- You can more easily prototype your work. You might do as follows, for example:
- Create a prototype web application that accesses several workstation-based programs.
- Change the application in response to user feedback.
- Implement the production-level programs on the same or other platforms.
Outside of the work you do on the programs themselves, your only adjustments are to configuration files or name-server content, not to other source code.