Inc. Server User Manual

WebLogic Server 7.0 J2EE Application Types
BEA WebLogic Server 7.0 Upgrade Guide 2-9
WebLogic Server 7.0 J2EE Application Types
Applications on J2EE-compliant servers such as WebLogic Server 7.0 are created and
deployed as one of the following four types: Web Applications, Enterprise JavaBeans,
Enterprise Archives, and client applications. To port your existing components to
WebLogic Server 7.0, create the appropriate J2EE deployment units. For more
information on J2EE deployment units, see Deploying Web Applications as Part of an
Enterprise Application in Assembling and Configuring Web Applications. Web
Applications are usually a collection of servlets, JSPs, and HTML files, packaged as
WAR files. Enterprise JavaBeans (packaged as JAR files) are server-side Java
components written according to the EJB specification. Enterprise Archives (EAR
files) contain all of the JAR and WAR component archive files for an application and
an XML descriptor that describes the bundled components. Client Applications are
Java classes that connect to WebLogic Server through Remote Method Invocation
(RMI). Later sections discuss the aforementioned J2EE deployment units in greater
detail.
Converting and Porting Your Existing
Applications into Web Applications
In order to convert an application to a Web Application and then port it into a Web
Application deployed on WebLogic Server 7.0, the application’s files must be placed
within a directory structure that follows a specific pattern. For development, these files
can be left in an exploded directory format. However, for production situations, it is
highly recommended that you bundle your applications into a WAR file as a single
Web Application. For more information on Web Applications see Understanding
WebLogic Server J2EE Applications and Assembling and Configuring Web
Applications.
The following sections provide information you need to know about porting and
deploying Web Applications, including a procedure for porting a simple servlet from
WebLogic Server 5.1 to WebLogic Server 7.0:
 “Web Applications Directory Structure” on page 2-10