JavaServer Pages Access Model

You can apply the JavaServer Pages technology in two ways:

● A user working in a client Web browser makes a request that is sent to a JavaServer Pages (.jsp) file. The .jsp file accesses server components that generate dynamic content and displays the dynamic content in the browser.
● A user working a client Web browser makes a request that is sent to a Java Servlet that generates a result and stores the result in component. The servlet then calls a JavaServer Pages file, which accesses the component and displays the dynamic content in the browser.

There 2 types of JavaServer Pages Access Model

● JSP model 1
● JSP model 2

JSP model 1 architecture

In the design of Java Web applications, there are two commonly used design models, referred to as "Model 1 and Model 2".

In Model 1, a request is made to a JSP or servlet and then that JSP or servlet handles all responsibilities for the request, including processing the request, validating data, handling the business logic, and generating a response. The Model 1 architecture is commonly used in smaller, simple task applications due to its ease of development.
Although conceptually simple, this architecture is not conducive to large-scale application development because, inevitably, a great deal of functionality is duplicated in each JSP. Also, the Model 1 architecture unnecessarily ties together the business logic and presentation logic of the application.


Model 1:

A request sent to a JavaServer Pages file The user working in a client Web browser can make a request directly of a JavaServer Pages file.

After receiving the client request, the JavaServer Pages file requests information from a JavaBean. The JavaBean can in turn request information from an Enterprise JavaBean or a database. Once the JavaBean generates content (perhaps working with an Enterprise JavaBean, a database, or both), the JavaServer Pages file can query and display the Bean's content.

References : wikipedia | oracle « Privious Post » « Next Post » share on :        :  

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