Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Manual do Utilizador descarregar pdf (Página 14)

Dynamic Reconfiguration

14 iPlanet Web Server, Enterprise Edition Programmer’s Guide to Servlets • May 2001

A special directory under the document root, WEB-INF, contains everything related

to the application that is not in the public document tree of the application. No file

contained in

WEB-INF can be served directly to the client. The contents of WEB-INF

include:

•

/WEB-INF/web.xml, an XML-based deployment descriptor that specifies the

web application configuration, including mappings, initialization parameters,

and security constraints.

•

/WEB-INF/classes/*, the directory for the servlet and utility classes.

•

/WEB-INF/lib/*.jar, the directory for the JAR files containing servlets, beans,

and other utility classes.

A WAR (web application archive) file contains a complete web application in

compressed form. iPlanet Web Server cannot access an application in a WAR file.

You must uncompress a web application (deploy it using the

wdeploy utility)

before iPlanet Web Server can serve it.

Web application configuration includes two parts:

•The

web.xml file, which is the standard Servlets 2.2 deployment descriptor.

Each web application has its own

web.xml file. For information about web.xml,

see the Servlet 2.2 API specification:

http://java.sun.com/products/servlet/index.html

•The web-apps.xml file, which is specific to iPlanet Web Server. Each virtual

server has its own

web-apps.xml file, which configures all the applications

running in that virtual server.

Dynamic Reconfiguration

When you make changes to a web application, you do not need to restart the

server. Changes are reloaded automatically at a frequency set in the

reload-interval attribute of the

class-loader element in the web-apps.xml

file.

When you make changes to the

web-xml or web-apps.xml file, you also do not

need to restart the server. However, you must apply the changes by clicking the

Apply link and then clicking the Load Configuration Files button on the Apply

Changes screen.

For more information about dynamic reconfiguration, see Chapter 1, “Basics of

Server Operation” in the NSAPI Programmer’s Guide for iPlanet Web Server.

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