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Question: What is the actual difference between MVC and MVC Model2




Answer: MVC1, is architecture which does not include struts frame work in it, whereas in case of MVC2 it includes struts frame work.MVC1 is called model1 and MVC2 is called model2.



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Question: What is the actual difference between MVC and MVC Model2





Answer:

MVC1, is architecture which does not include struts frame work in it, whereas in case of MVC2 it includes struts frame work.MVC1 is called model1 and MVC2 is called model2. Source: CoolInterview.com


Quoted from the Java Blueprints:

A Model 1 architecture consists of a Web browser directly accessing Web-tier JSP pages. The JSP pages access Web-tier JavaBeans that represent the application model, and the next view to display (JSP page, servlet, HTML page, and so on) is determined either by hyperlinks selected in the source document or by request parameters. A Model 1 application control is decentralized, because the current page being displayed determines the next page to display. In addition, each JSP page or servlet processes its own inputs (parameters from GET or POST). In some Model 1 architectures, choosing the next page to display occurs in scriptlet code, but this usage is considered poor form. (See the design guideline Section 4.2.6.8 on page 89.)

A Model 2 architecture introduces a controller servlet between the browser and the JSP pages or servlet content being delivered. The controller centralizes the logic for dispatching requests to the next view based on the request URL, input parameters, and application state. The controller also handles view selection, which decouples JSP pages and servlets from one another. Model 2 applications are easier to maintain and extend, because views do not refer to each other directly. The Model 2 controller servlet provides a single point of control for security and logging, and often encapsulates incoming data into a form usable by the back-end MVC model. For these reasons, the Model 2 architecture is recommended for most interactive applications. Source: CoolInterview.com

Answered by: Anonymous | Date: | Contact Anonymous Contact Anonymous

MVC and MVC Model2 both are used to develop web applications.
But mvc is called model1.In this model1 we have some drawbacks.
They are 1>This Model1 is used to develop only one Technology that is Jsp Technology.
2>To develop application in Model1 we use to develop same Jsp Technology for multiple Logics,so we have a page centric problem.
3>Programmer may have lot of burden why because he knows multiple technologies while developing application.
4>To develop this project we need to take more time.
5>No Reusability.
6>No Flexibility.
The above drawbacks are overcome to introduce MVC model2..
here we have some advantges are there they are,
1>This model is used to develop both servlets and jsp Technologies.so,obvisously page centric problem is elemented.
2>Programer feel no burden
3>Development of the project is fast
4>Reusability
5>Flexibility
Source: CoolInterview.com

Answered by: venkateswara reddy gunapati | Date: 6/7/2010 | Contact venkateswara reddy gunapati Contact venkateswara reddy gunapati


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