Servlet / JSP

1
Servlet / JSP
? ? ?
2
0. ??

• 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
?? 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 ??
• JAVA_HOMEC\J2SDK1.X
• Path.JAVA_HOME\bin
• classpath.C\....\X.jar
• Servlet Server
• TOMCAT(http//jakarta.apache.org)
• RESIN(http//www.caucho.com)
• Home ?? ??
• servlet.jar?? classpath? ??

15
TOMCAT

• ./Tomcat/bin\startup.bat

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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(