Assembling web applications
Assemble a web module to contain servlets, JavaServer Pages (JSP) files, and related code artifacts. (Group enterprise beans, client code, and resource adapter code in separate modules). After assembling a web module, we can install it as a stand-alone application or combine it with other modules into an enterprise application.
This topic assumes that we have created and unit tested Servlets and JavaServer Pages (JSP) files and other web components to assemble in an enterprise application and deploy onto an application server.
Use an assembly tool to assemble a web module in any of the following ways:
- Import an existing web module (WAR file).
- Create a new web module.
- Copy code artifacts (such as servlets) from one web module into a new web module.
Although we can input various properties for web archives, available properties are specific to the Servlet, JSP, and Java EE specification level.
Tasks
- Start an assembly tool.
- If we have not done so already, configure the assembly tool for work on Java EE modules. Ensure that J2EE and Web capabilities are enabled.
- Migrate WAR files created with the Assembly Toolkit, Application Assembly Tool (AAT) or a different tool to an assembly tool. To migrate files, import your WAR files to the assembly tool.
- Create a new web module.
- Copy code artifacts (such as servlets) from one web module into a new web module.
A web project is migrated or created. Files for the Web project are shown in the Project Explorer view under Enterprise Applications and Web Projects.
What to do next
We can now deploy the web project to an application server.
Subtopics
- web.xml file
The web.xml file provides configuration and deployment information for the web components that comprise a web application.- File serving
In file serving, web applications can serve static file types, such as HTML. File-serving attributes are used by the servlet that implements file-serving behavior.
Related:
Web component security Web modules Web applications JavaServer Pages Page lists Application life cycle listeners and events Servlet filtering Servlets Client type detection support Global tag libraries (deprecated) Security constraints in web applications Security settings Install enterprise application files Assemble applications Web applications: Resources for learning Import web application archive (WAR) files Create a dynamic web project