Server Technology PPNT Manuel d'utilisateur télécharger pdf (Page 51)

Java Servlets: Advantages(1/4)

Eﬃcient

With traditional CGI: for e ach request a new OS process is started

Java VM, servlet container, and a particular s ervlet started only once:

each request handled by a Java thread

Lightweight Java threads instead of heavyweight OS processes

With CGI: if N simultaneous requests than the code is loaded N times

With servlets: N threads but only one copy of code in the memory

Optimization possibilites with servlets: caching, keeping database

connections open, etc.

answer from CGI: Fast-CGI (http:// www .fas tcgi .com)

(51/95)

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 94 95

Server-side Technologies 1
CGI, PHP, Java Servlets, JSP 1
CGI Speciﬁcation(4/4) 11
CGI Examples(1/7) 12
Example 1: 12
Write HTML to st dout 12
CGI Examples(2/7) 13
Example 1 (continued): 13
Example: 13
CGI Examples(3/7) 14
Example 2: 14
CGI Examples(6/7) 17
Example 4: 17
CGI Examples(7/7) 18
Example 4 (continued): 18
Another CGI example: 18
CGI Applications(1/2) 19
WWW gateways! 19
CGI Applications(2/2) 20
Finger gateway: 20
Mail gateway: 20
1 while s/[(][^()]*[)] //;) 22
... </script> 24
<% ... %> 24
PHP: Hello World(2/3) 25
PHP: Hello World(3/3) 26
PHP: Handling Forms(1/8) 29
PHP: Handling Forms(2/8) 30
PHP: Handling Forms(3/8) 31
Example with GET: 31
Example with POST: 31
Example PHP: 31
Source PHP: 31
PHP: Handling Forms(4/8) 32
PHP: Handling Forms(5/8) 33
PHP: Handling Forms(7/8) 35
>=PHP4.2.0 by default oﬀ 36
Retrieving data with PHP: 40
PHP: XML Manipulation(2/3) 43
PHP: XML Manipulation(3/3) 44
PHP: Image Manipulation(1/3) 45
PHP: Image Manipulation(2/3) 46
PHP: Image Manipulation(3/3) 47
Convinient 52
Huge Java software libraries 52
Servlet Container 55
Apache software foundation 55
Java Servlets - Internal(2/2) 59
Example: Hello World! 60
Hello World: 63
Source code: 63
ECSHelloWorldServlet.java 64
CGI Variables: 66
HTTP Headers: 66
Form for inserting data: 70
Retrieving data with Java 72
XMLRegistrationServlet.java 75
Java Server Pages (JSP) 77
HelloWorld JSP: 77
JSP Elements(1/7) 79
JSP expression 79
</jsp:expression> 79
JSP Elements(3/7) 81
JSP Declaration 81
</jsp:declaration> 81
JSP Elements(4/7) 82
JSP Page Directive 82
JSP Elements(5/7) 83
JSP comments 83
JSP Elements(7/7) 85
Possible solution 87
Session Tracking(1/5) 90
Session Tracking(3/5) 92
Session Tracking(4/5) 93
SessionServlet.java 94
Very hot topic right now 95
.NET from Microsoft 95
Web services 95

Commentaires sur ces manuels

Pas de commentaire

Server Technology PPNT Manuel d'utilisateur Page 51

Commentaires sur ces manuels