1. Copyright © 2002 ProsoftTraining. All rights reserved. JavaServer Pages

2. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 1: Introduction to JavaServer Pages

3. Objectives Define JavaServer Pages (JSP) Define Java servlets Define Enterprise JavaBeans (EJB) Compare JSP to other server-side programming environments Explain the advantages of JSP Understand the mechanics of JSP documents Use basic JSP syntax Describe how to invoke JSP documents

4. What Is Enterprise JavaBeans (EJB)? EJB = An architecture for deploying component-based distributed applications –J2EE-compliant application servers

5. What Are Java Servlets? Java servlets provide the functionality of the CGI for Java-driven Web applications –Managed and executed on a Web server that provides a servlet container –Executed within a single JVM and server process

6. What Is JSP? Server-side programming environment –Contains normal HTML with special syntax that allows dynamic content

7. Web Application Technologies Common Gateway Interface (CGI) Server extensions Server-side scripting –ColdFusion –PHP Hypertext Preprocessor (PHP)

8. JSP Advantages and Mechanics Java = powerful programming language –Built-in APIs JSP applications are portable JSP engine  locates the JSP document JSP engine  processes the JSP document into a servlet JSP engine  passes control to servlet engine

9. Basic JSP Syntax Script blocks JSP files with comments

10. Summary Define JavaServer Pages (JSP) Define Java servlets Define Enterprise JavaBeans (EJB) Compare JSP to other server-side programming environments Explain the advantages of JSP Understand the mechanics of JSP documents Use basic JSP syntax Describe how to invoke JSP documents

11. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 2: JSP Fundamentals

12. Objectives Describe various styles of JSP syntax Use JSP expressions Use JSP scriptlets Use JSP declarations Use predefined variables

13. Evaluating Java Expressions Syntax:

14. Using JSP Scriptlets Scriptlets allow you to: –Perform complex operations within a JSP document –Intersperse blocks of Java code with normal HTML

15. Using JSP Declarations JSP declarations: –Provide a construct in which to declare methods and variables –Do not produce output –Use the following syntax:

16. Using JSP Predefined Variables The request variable The response variable The out variable The application variable The session variable The config variable The pageContext variable The page variable

17. Summary Describe various styles of JSP syntax Use JSP expressions Use JSP scriptlets Use JSP declarations Use predefined variables

18. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 3: JSP Directives

19. Objectives Define JSP directives Use the page directive Use page directive attributes Use the include directive Use the jsp:include element Add and manipulate Java applets in JSP files using the jsp:plugin element

20. Introduction to JSP Directives The page directive –The import attribute –The language attribute –The contentType attribute –The pageEncoding attribute –The extends attribute –The isThreadSafe attribute –The session attribute –The buffer attribute –The autoFlush attribute –The errorPage attribute –The isErrorPage attribute –The info attribute

21. Including Files in JSP Using the include directive Using the jsp:include element

22. Using the jsp:plugin Element The jsp:plugin element is used to: –Add Java applets to JSP files –Determine the appropriate tag for the client browser accessing the JSP file

23. Summary Define JSP directives Use the page directive Use page directive attributes Use the include directive Use the jsp:include element Add and manipulate Java applets in JSP files using the jsp:plugin element

24. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 4: JSP and JavaBeans

25. Objectives Define JavaBeans Explain the concept of component-centric architecture Describe the advantages of JavaBeans Instantiate JavaBeans Use JSP-JavaBeans tags to access and manipulate JavaBeans properties Explain the conventions for constructing JavaBeans Use the serializable interface Access JavaBeans through scripting elements

26. Component-Centric Architecture Component-centric architecture: –Allows for handling complexity –Divides complex systems into components

27. JavaBeans

28. JSP—JavaBeans Tags TagDescription Used to instantiate a JavaBean and create a reference to it Used to access a JavaBean property Used to modify a JavaBean property

29. Rules for Constructing JavaBeans Class Constructor Property Methods –Regular methods –Access methods

30. The JavaBean Serializable Interface When a JavaBean is serialized, its property values are frozen To make the JavaBean serializable, it should implement the Serializable interface

31. Accessing JavaBeans Through Scriptlets and Expressions After the tag instantiates a JavaBean and has a reference to it, the JavaBean can be used in scriptlets and expressions throughout the scope of the JavaBean

32. Summary Define JavaBeans Explain the concept of component-centric architecture Describe the advantages of JavaBeans Instantiate JavaBeans Use JSP-JavaBeans tags to access and manipulate JavaBeans properties Explain the conventions for constructing JavaBeans Use the serializable interface Access JavaBeans through scripting elements

33. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 5: JSP Custom Tags and Tag Libraries

34. Objectives Describe JSP custom tags Explain the need for JSP tag libraries Define and use the taglib directive Download, install and use a tag library Create custom handler classes and descriptor files Create tag attributes Use a custom tag Deploy tag libraries

35. Why Use Tag Libraries? Custom tag libraries: –Allow you to create complex objects that can be used by JSP developers –Allow you to reuse code across multiple JSP applications

36. Using Custom Tags Using a tag library –The number of pre-existing tag libraries is growing

37. Creating JSP Custom Tag Libraries Three steps to creating a custom tag: –Define a tag handler class –Define a tag library descriptor –Define a JSP page that uses the custom tag The taglib directive

38. Using Custom Tags in JSP Files Key elements of a custom tag: –Tag name –Attributes –Nesting –Body content

39. Tag Handlers

40. Tag Library Descriptor Root element = Subelements = tlibversion shortname info Deploying tag libraries

41. Summary Describe JSP custom tags Explain the need for JSP tag libraries Define and use the taglib directive Download, install and use a tag library Create custom handler classes and descriptor files Create tag attributes Use a custom tag Deploy tag libraries

42. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 6: JSP and Java Servlets

43. Objectives Define servlets Write simple servlets Discuss the difference between servlets and JSPs Explain the concept of MVC design pattern Describe the layers of MVC design pattern Explain Models 1 and 2 Web application designs Define the RequestDispatcher interface Use the RequestDispatcher to dispatch requests

44. Servlets Java servlets = Java classes that implement the javax.servlet.Servlet interface Servlets have no main method for handling requests –Using the GET method

45. Servlets vs. JSP Manageability problems with servlets How can JSP help?

46. Web Application Architecture Presentation layer Application layer Control layer

47. MVC Design Pattern

48. JSP vs. Servlet Architecture Model 1 architecture Model 2 architecture Model 1 and Model 2 architecture trade-offs

49. Model 1 Architecture

50. Model 2 Architecture

51. Page-Centric Design

52. Servlet-Centric Design

53. Controlling the Flow with RequestDispatcher Acquiring a RequestDispatcher object Using the RequestDispatcher object Where to place the servlets Incorporating another resource's output in a servlet Forwarding a request from a JSP to other resources

54. Summary Define servlets Write simple servlets Discuss the difference between servlets and JSPs Explain the concept of MVC design pattern Describe the layers of MVC design pattern Explain Models 1 and 2 Web application designs Define the RequestDispatcher interface Use the RequestDispatcher to dispatch requests

55. Copyright © 2002 ProsoftTraining. All rights reserved. Lesson 7: JSP, HTML Forms and Databases

56. Objectives Describe the tiers in a three-tier distributed application Discuss a Web communication between tiers Use HTML forms and their input elements Use the request object to communicate between HTML forms and JSP files Explain the concept of relational databases Use the main SQL statements Describe Java Database Connectivity Connect to a database and access information Create an example of an HTML form

57. Distributed Multi-Tiered Applications Client tier Server tier Database tier

58. Steps in a Typical Web Communication http://java.sun.com/getjava/download.html Hypertext Transfer Protocol Host name Path name

59. HTML Forms Text field input Radio button input Check box input Drop-down menu input Reset and submit buttons

60. Request Object Contains: –Methods for storing and retrieving attribute values –Methods for accessing request parameters –Methods for retrieving request headers –Methods for other uses

61. Relational Databases Database Management System (DBMS) Queries

62. Structured Query Language (SQL) Data Definition Language (DDL) Data Manipulation Language (DML) Data Control Language (DCL)

63. Java Database Connectivity (JDBC) Load a JDBC driver Connect to a database Execute SQL statements Disconnect from a database

64. Summary Describe the tiers in a three-tier distributed application Discuss a Web communication between tiers Use HTML forms and their input elements Use the request object to communicate between HTML forms and JSP files Explain the concept of relational databases Use the main SQL statements Describe Java Database Connectivity Connect to a database and access information Create an example of an HTML form

65. JavaServer Pages Introduction to JavaServer Pages JSP Fundamentals JSP Directives JSP and JavaBeans JSP Custom Tags and Tag Libraries JSP and Java Servlets JSP, HTML Forms and Databases