Coursejspservlets00
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The document outlines topics covered in a Servlet and JSP course, including introductions to servlets and JavaServer Pages, how to use MVC pattern, share information and access databases in web applications, and how to secure applications using features like filters and listeners.
Coursejspservlets00
- 2. Servlet / JSP course topics • Chapter 0 Introduction to Java Web Development • Chapter 1 Introduction to servlets • Chapter 2 Introduction to JavaServer Pages • Chapter 3 How to use the MVC pattern in a Java Web Application • Chapter 4 How to share information in servlets and JSPs • Chapter 5 Advanced JSP concepts • Chapter 6 How to use JavaBeans with JSP • Chapter 7 How to use the JSP Expression Language (EL) • Chapter 8 How to use the JSP Standard Tag Library (JSTL) • Chapter 9 How to use custom JSP tags • Chapter 10 How to access databases in java web applications • Chapter 11 How to use JavaMail to send email • Chapter 12 How to secure java web applications • Chapter 13 How to download files with Servlets • Chapter 14 How to work with listeners • Chapter 15 How to work with filters
- 3. Introduction to Java Web Development
- 4. Introduction to Java Web Development • Java Enterprise Edition • Java Web Development • Structure of a web project • Introduction to Web Applications • The first project
- 6. Java Web Development * Note In this course only JSP & servlets will be discussed
- 7. Structure of a web project • There are two kind of structures – The structure of the web application in a server – The structure of the IDE • A web project have three main elements – The JSPs files – The java classes – The Configuration file web.xml
- 8. Structure of a web project in the server
- 9. Structure of a web project in the server Root of the project Java classes (.class) Java Libraries (.jar) Configuration files Anything web-related - Directories - JavaServer Pages (JSP) - HTML - Css files - JavaScript Files - Etc.
- 10. Introduction to Web Applications • In a Web Application, web components provide the dynamic extension capabilities for a web server. • Web components can be Java servlets, JSP pages, or web service endpoints. • The interaction between a web client and a web application is explained and illustrated in the next slide figure. – The client sends an HTTP request to the web server. – A web server that implements Java Servlet and JavaServer Pages technology converts the request into an HTTPServletRequest object. – This object is delivered to a web component, which can interact with JavaBeans components or a database to generate dynamic content. – The web component can then generate an HTTPServletResponse or it can pass the request to another web component. – Eventually a web component generates a HTTPServletResponse object. The web server converts this object to an HTTP response and returns it to the client.
- 11. Introduction to Web Applications
- 12. Introduction to Web Applications • Servlets are Java programming language classes that dynamically process requests and construct responses. • JSP pages are text-based documents that execute as servlets but allow a more natural approach to creating static content. • Although servlets and JSP pages can be used interchangeably, each has its own strengths. • Servlets are best suited for service-oriented applications (web service endpoints are implemented as servlets) and the control functions of a presentation-oriented application, such as dispatching requests and handling nontextual data. • JSP pages are more appropriate for generating text-based markup such as HTML, Scalable Vector Graphics (SVG), Wireless Markup Language (WML), and XML.
- 14. Life Cycle of a JEE Web Application
- 15. Life Cycle of a JEE Web Application
- 16. Criteria to develop web applications
- 17. Exercise 1 • Develope the first java web application 1. Download the file: jspservlet-00.zip 1. Unzip it 2. Import from Eclipse 3. Run it
- 18. Exercise 1 Results • You should get this result
- 19. Exercise 1 Analisis • The web.xml file <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" . . . version="2.5"> <servlet> <display-name>HelloWorldServlet</display-name> <servlet-name>HelloWorldServlet</servlet-name> <servlet-class> com.example.servlets.HelloWorldServlet </servlet-class> </servlet> Servlet <servlet> declarations <display-name>AnotherServlet</display-name> <servlet-name>AnotherServlet</servlet-name> <servlet-class> com.example.servlets.AnotherServlet </servlet-class> </servlet>
- 20. Exercise 1 Analisis • The web.xml file . . . <servlet-mapping> <servlet-name>HelloWorldServlet</servlet-name> <url-pattern>/HelloWorldServlet</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>AnotherServlet</servlet-name> Servlet <url-pattern>/AnotherServlet</url-pattern> mappings </servlet-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> </web-app>
- 21. Exercise 1 Analisis Servlet classes (other might be here classes too) Other resources might be here