TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
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WEB APPLICATIONS
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Presenter: Nguy n Xuân Vinh Information Technology Faculty Nong Lam University
TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Overview
Web application is a dynamic extension of a web or application
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server. Web applications are of the following types: Presentation-oriented: generates interactive web pages
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containing various types of markup language.
Service-oriented: implements the endpoint of a web service.
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Applications
Web components can be:
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Java Servlets. Web pages implemented with JavaServer Faces technology. Web service endpoints. JSP pages.
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Figure - Java Web Application Technologies
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Applications
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Servlets are best suited for service-oriented applications
JavaWebApplication Request Handling Servlets are Java programming language classes that dynamically process requests and construct responses.
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Java Server Faces and Facelets pages aremore appropriate for generating text- basedmarkup
JavaServer Faces and Facelets, are used for building interactive web applications
TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Applications
Web components are supported by the services of a runtime
platform called a web container.
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Web container provides such services as:
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Request dispatching. Security. Concurrency. Lifecycle management.
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Web container gives web components access to such API as:
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Naming. Transactions. Email.
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Applications
The configuration information can be specified using
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Java EE annotations Web application deployment descriptor (DD): XML file.
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Application Lifecycle
The process for creating, deploying, and executing a web application
can be summarized as follows:
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Develop the web component code
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Develop the web application deployment descriptor (if necessary)
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Compile web application components, helper classes referenced by components Optionally, package the application into a deployable unit
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Deploy the application into a web container
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Access a URL that references the web application
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Module 1: hello example
Web resources: web components and static web content files. A web module is the smallest deployable and usable unit of web
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resources.
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In addition to web components and web resources, a web module
can contain other files: Server-side utility classes, such as shopping carts. Client-side classes, such as applets and utility classes.
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Module 1: hello example
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
Web Module 1: Demo
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Create Web Project and depoly by Eclipse, Netbean Create Web Project and deploy by Ant Create Web Project and deploy by Maven
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TR NG Đ I H C NÔNG LÂM TP.HCM KHOA CÔNG NGH THÔNG TIN ƯỜ Ạ Ọ Ệ
