1. Servlet / JSP 전 혜 영전 혜 영 전 혜 영전 혜 영

2. 0. 목차  Web Application Technologies  Servlet Server  Simple Servlet  Servlet / HTML Form  Deployment Descriptor  Servlet Context  MVC Parrern  Cookie / Session  Error Handling

3. Web Application Technologies

4. Client-Server Architecture

5. HTTP C-S Architecture

6. CGI Programs on the Web Server

7. 기존 CGI Programs

8. Servlets on the Web Server

9. Servlet Program

10. The Model2 Architecture

11. J2EE Architecture

12. Web Application Migration

13. Servlet Engine

14. Servlet Server Programs  JDK 설치  JAVA_HOME=C:\J2SDK1.X  Path=.;%JAVA_HOME\bin  classpath=.;C:\....\X.jar  Servlet Server  TOMCAT(http://jakarta.apache.org)  RESIN(http://www.caucho.com)http://www.caucho.com  Home 경로 추가  servlet.jar 경로 classpath 에 추가

15. TOMCAT ./Tomcat/bin\startup.bat

16. TOMCAT Configuration  Tomcat  bin  startup.bat, shutdown.bat  conf  server.xml, web.xml  webapps  ROOT  WEB-INF  Classes  web.xml  html, jsp  work

17. Resin ./resin\bin/httpd.exe

18. Resin

19. Resin Configuration  bin  httpd.exe  conf  resin.conf, app-default.xml  doc  WEB-INF  classes  work  html, jsp  lib  resin.jar  webapps  config.xml

20. Simple Servlet

21. The NetServer Architecture

22. The Generic Servlet API

23. Generic Servlet Code import javax.servlet.GenericServlet; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import java.io.PrintWriter; import java.io.IOException; public class HelloServlet extends GenericServlet { public void service(ServletRequest request, ServletResponse response) throws IOException { PrintWriter out = response.getWriter(); out.println(“Hello, World!!”); out.close(); }

24. Hypertext Transfer Protocol

25. HTTP (Hypertext Transfer Protocol)  request/reponse  header  entity body  HTTP 동작 방식  GET  POST  HEAD  PUT  DELETE  TRACE  OPTIONS

26. GET url HTTP/1.1 요청에 대한 정보 GET/POST Request POST url HTTP/1.1 요청에 대한 정보 요청의 일부로 전송되는 정보

27.  GET  소량의 데이타 전송  HTTP 의 헤더로 데이타 전송  URL 창에 보내는 데이타가 보임  URL 창에 http://www.babo.com 이라고 요청하 는 것 자체가 GET 방식 ( default )http://www.babo.com  POST  HTTP 의 몸체로 데이타 전송  대량의 데이타 ( 예, 파일전송 ) 전송시  URL 창에 데이타가 안보이기에 보안에 좋음

28. Web Container Architecture

29. SequenceDiagram - HTTP GetRequest

30. The Http Servlet API

31. HttpServlet Code import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.PrintWriter; import java.io.IOException; public class HelloServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException { response.setContentType("text/html;charset=euc-kr"); PrintWriter out = response.getWriter(); out.println(" "); out.println(" "); out.println(" Hello Servlet "); out.println(" "); out.println(" Hello, World "); out.println(" "); out.println(" "); out.close(); }

32. Servlet Life Cycle

33. Servlet / HTML Form

34. FORM tag  action : 웹 서버에 전달되어 처리될 CGI 프로 그램 주소  method : get/post  enctype : 인코딩 타입  target : CGI 프로그램이 처리후 결과를 보여 줄 위치

35. HTML Form Components

36. Servlet API

37. Deployment Descriptor

38.  web-app  icon  display-name  description  distributable  context-param  filter  filter-mapping  listener  servlet  servlet-mapping  session-config  mime-mapping  welcome-file-list  error-page  taglib  resource-env-ref  resource-ref  security-constraint  login-config  security-role  env-entry  ejb-ref  ejb-local-ref  Filter  icon  filter-name  display-name  description  filter-class  init-param  param-name  param-value  description  filter-mapping  filter-name  url-parrern  servlet-name  servlet  icon  servlet-name  display-name  description  servlet-class  jsp-file  init-param  param-name  param-value  servlet-mapping  servlet-name  url-pattern

39. Initialization Parameters (web.xml) simpleServlet ServletTest dbDriver com.mysql.jdbc.Driver

40. Initialization Parameters (servlet.java) public class ServletTest extends HttpServlet{ private String driver; public void init(){ Driver=getInitParameter(“dbDriver”); } public void doGet(HttpServletRequest, httpServletResponse) throws ServletException, IOException{ … Out.println(driver);.. }

41. Servlet Config

42. Servlet Context

43. MVC Parrern

44. Cookie / Session

45. Error Handling