The Servlet 3. The change in Servlet 3. To quote the Servlet 3. These specifications come from : The servlet container e. That may be different if you use another servlet container or application server. Abel Patrick B. Artem Moskalev Artem Moskalev 5, 11 11 gold badges 35 35 silver badges 54 54 bronze badges. Wouldn't the jsp file still look for a request's session? And if it would find none, it wouldn't display some parts of the site. Sign up or log in Sign up using Google. Sign up using Facebook.
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What a difference a year makes. When I am old, what will worry me? Learning to program - what are algorithms and design patterns? Annotations simplify the application development process by allowing a developer to specify within the Java class itself how the application component behaves in the container, requests for dependency injection, and so on. Annotations are an alternative to deployment descriptors that were required by older versions of enterprise applications J2EE 1.
With Java EE annotations, the standard application. However, Web applications deployed on WebLogic Server can still use a standard Java EE deployment descriptor file and a WebLogic-specific deployment descriptor file to define their resources and operating attributes. Web applications use a standard directory structure defined in the Java EE specification. You can deploy a Web application as a collection of files that use this directory structure, known as exploded directory format, or as an archived file called a WAR file.
Oracle recommends that you package and deploy your exploded Web application as part of an enterprise application. This is an Oracle best practice, which allows for easier application migration, additions, and changes. Also, packaging your Web application as part of an enterprise application allows you to take advantage of the split development directory structure, which provides a number of benefits over the traditional single directory structure.
These subdirectories are respectively named classes and lib. The Java classes include servlets, helper classes and, if desired, precompiled JSPs. All servlets, classes, static files, and other resources belonging to a Web application are organized under a directory hierarchy. The following is an example of how to target a Web application to a virtual host:. Servlets, Context Listeners, and Filters are loaded and destroyed in the following order:.
Servlets and filters are loaded in the same order they are defined in the web. Context listeners are loaded in the following order:. Using WebLogic Server 9. Web application libraries are Web application modules deployed as libraries.
They are referenced from the weblogic. At deployment time, the classpath of each referenced library is appended to the Web application's classpath. Therefore, the search for all resources and classes occurs first in the original Web application and then in the referenced library. The deployment tools, appc, wlcompile, and BuildXMLGen support libraries at the Web application level in the same way they support libraries at the application level.
Place the Enterprise applications descriptors application. Edit the deployment descriptors as needed to fine-tune the behavior of your Enterprise application.
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