Servlet/JSP course chapter 2: Introduction to JavaServer Pages (JSP)

Chaper 2 Servlets / JSP Course Introduction to JavaServer Pages

Servlet / JSP course topics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction to JavaServer Pages

Intorduction to JavaServer Pages ,[object Object],[object Object],[object Object],[object Object]

What Is a JSP Page? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What Is a JSP Page? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Life Cycle of a JSP Page ,[object Object],[object Object],[object Object],[object Object],[object Object]

The Life Cycle of executing a JSP Page

Exercise 1 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exercise 1 Results ,[object Object]

Exercise 1 Results ,[object Object],< form action = " display_email_entry.jsp " method = "post" > < table cellspacing = "5" border = "0" > < tr > < td align = "right" > First name: </ td > < td >< input type = "text" name = "firstName" ></ td > </ tr > < tr > < td align = "right" > Last name: </ td > < td >< input type = "text" name = "lastName" ></ td > </ tr > < tr > < td align = "right" > Email address: </ td > < td >< input type = "text" name = "emailAddress" ></ td > </ tr > < tr > < td ></ td > < td >< br >< input type = "submit" value = "Submit" ></ td > </ tr > </ table > </ form > The action is mapped to a JSP

Exercise 1 Results ,[object Object],. . .  <%@ page import = "business.*, data.*, java.util.Date" %> <% // get parameters from the request String firstName = request .getParameter( "firstName" ); String lastName = request .getParameter( "lastName" ); String emailAddress = request .getParameter( "emailAddress" ); // get a relative file name ServletContext sc = this .getServletContext(); String path = sc.getRealPath( "/WEB-INF/EmailList.txt" ); // use regular Java objects User user = new User(firstName, lastName, emailAddress); UserIO.add(user, path); %> . . . The request object Accesed by variables

Exercise 1 Results ,[object Object],. . . < p > Here is the information that you entered: </ p > < table cellspacing = "5" cellpadding = "5" border = "1" > < tr > < td align = "right" > First name: </ td > < td > <%= user.getFirstName() %> </ td > </ tr > < tr > < td align = "right" > Last name: </ td > < td > <%= user.getLastName() %> </ td > </ tr > < tr > < td align = "right" > Email address: </ td > < td > <%= user.getEmailAddress() %> </ td > </ tr > </ table > . . . The response object Is implicit

Exercise 1 Results ,[object Object],. . . // send response to browser response.setContentType( "text/html;charset=UTF-8" ); PrintWriter out = response.getWriter(); out.println( . . . + " <table cellspacing=amp;quot;5amp;quot; cellpadding=amp;quot;5amp;quot; border=amp;quot;1amp;quot;>" + " <tr><td align=amp;quot;rightamp;quot;>First name:</td>" + " <td>" + firstName + "</td>" + " </tr>" + " <tr><td align=amp;quot;rightamp;quot;>Last name:</td>" + " <td>" + lastName + "</td>" + " </tr>" + " <tr><td align=amp;quot;rightamp;quot;>Email address:</td>" + " <td>" + emailAddress + "</td>" + " </tr>" + " </table>" . . . out.close(); . . .

Resources To download example code for this chapter go to: http://www.jeetrainers.com

Servlet/JSP course chapter 2: Introduction to JavaServer Pages (JSP)

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Servlet/JSP course chapter 2: Introduction to JavaServer Pages (JSP)

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