URL path ::=
	scheme://host:port/context-root/alias
	scheme = http, https
	alias = [/path...]/{|endname|*.ext}
web module ::=
	WEB-INF/
		web.xml
		(server specific Deployment Descriptor:
		    jboss-web.xml jonas-web.xml sun-web.xml tomcat.xml)
		*.tld
		classes/.../*.class
		lib/*.jar
		    META-INF/
			*.tld
			tags/[subdirs.../]*.{tag,tagx}
		tags/[subdirs.../]
		    *.{tag,tagx}
		    [implicit.tld]
	.../*.{jsp,jspf,jspx,tagf,html,png,...}
Deployment Descriptor ::=
	context-root = /name
web.xml ::=
	not required if only static content + JSP pages
	*.jsp aliases are already mapped by web container
	index.html or index.jsp are default welcome files
	<context-param><param-name/><param-value/>
	<init-param><param-name/><param-value/>
	<error-page><exception-type/><location/>
	<resource-ref> == @Resource class|method|field
	<jsp-config> encoding, XML, emplacement de taglibs
*.jsp
	${expr}
	    e1?e2:e3
	    e1 b-op e2
		and && or || + - * / div % mod > gt < lt >= ge <= le == eq != ne
	    u-op e1
		- ! not empty
	    value
		null true false 123 12.3[e-4] 'str1' "str2\'\"\\"
		(e1)
		implicit-obj
		    pageContext
			servletContext, session, request, response
		    pageScope, requestScope, sessionScope, applicationScope
		    param, paramValues, header, headerValues, cookie, initParam
		name
		[ns:]func([e1,...])
		value1.name
		value1[e1]
	<%= java-expr %>
	Predefined objects:
	    --name--	--class--			--scope--
	    request	javax.servlet.ServletRequest	Request 
	    response	javax.servlet.ServletResponse	Page 
	    pageContext	javax.servlet.jsp.PageContext	Page 
	    session	javax.servlet.http.HttpSession	Session 
	    application	javax.servlet.ServletContext	Application
	    out		javax.servlet.jsp.JspWriter	Page 
	    config	javax.servlet.ServletConfig	Page 
	    exception	java.lang.Throwable		Page
*.jspx
	<jsp:root version="2.1"
		xmlns:jsp="http://java.sun.com/JSP/Page"
		xmlns:c="http://java.sun.com/jsp/jstl/core"
		xmlns:fmt="http://java.sun.com/jsp/jstl/fmt"
		xmlns:fn="http://java.sun.com/jsp/jstl/functions"
		xmlns:x="http://java.sun.com/jsp/jstl/xml"
	>
	<jsp:directive.page
		language="java"
		contentType="text/html" | "application/xhtml+xml"
		pageEncoding="UTF-8"
	>
	<jsp:text><![CDATA[<?xml version="1.0"?>]]></jsp:text>
	<jsp:output doctype-*='...'
		omit-xml-declaration='false'/>


	    Web Components That Accept Resource Injections
TABLE 3-1
Component		Interface/Class
Servlets		javax.servlet.Servlet
Servlet Filters		javax.servlet.ServletFilter
Event Listeners		javax.servlet.ServletContextListener
			javax.servlet.ServletContextAttributeListener
			javax.servlet.ServletRequestListener
			javax.servlet.ServletRequestAttributeListener
			javax.servlet.http.HttpSessionListener
			javax.servlet.http.HttpSessionAttributeListener
			javax.servlet.http.HttpSessionBindingListener
Taglib Listeners	Same as above
Taglib Tag Handlers	javax.servlet.jsp.tagext.JspTag
Managed Beans		Plain Old Java Objects (for JSF)

	    Injected types
Annotation		Injected class
@Resource		javax.sql.DataSource
@PersistenceUnit	javax.persistence.EntityManagerFactory
@PersistenceContext	javax.persistence.EntityManager
@WebServiceRef(wsdlLocation="...wsdl")
			*Service