Develop servlets with WAS extensions
Overview
Several WAS extensions are provided for enhancing your servlets. This task provides a summary of the extensions that you can utilize.
Procedure
- Review the supported specifications.
Create Java components, referring to the Servlet specifications from Sun Microsystems.
See Resources for learning for links to coding specifications and examples.
The appserver includes its own packages that extend and add to the Java Servlet Application Programming Interface (API). These extensions and additions make it easier to manage session states, create personalized Web pages, generate better servlet error reports, and access databases. Locate the API documentation for the appserver APIs in the install_root\web\apidocs directory for a default installation.
All the public WebSphere Application Server APIs are located in the com.ibm.websphere... packages.
- Use your favorite integrated development environment (IDE), or a text editor, to develop or migrate code artifacts that meet the specifications.
- Test the code artifacts.
What to do next
Assemble your code artifacts into a Web module using assembly tools as a prerequisite to deploying the code to the appserver.
Application life cycle listeners and events
Listener classes for servlet context and session changes
Example: Creating a servlet context listener with com.ibm.websphere.DBConnectionListener.java
Servlet filtering
Initial parameters for servlets settings
Example: Implementing a filter with com.ibm.websphere.LoggingFilter.java
Configure page list servlet client configurations
autoRequestEncoding and autoResponseEncoding
Related concepts
Servlets
Related tasks
Migrating Web application components from WAS V5.x
Related Reference
Web applications: Resources for learning