Installation guide

Servlet, JSP, and Web application enhancements
74 EAServer
Java Message Service API support
EAServer 4.0 provides implementations of the JMS API drivers, layered on top
of the existing message service API. The JMS specification defines two
messaging models: point-to-point for sending messages to specific message
consumers, and Publish/Subscribe for publishing messages that are available
to all consumers. For more information, see Chapter 31, “Using the Message
Service,” in the EAServer Programmer’s Guide.
Message-driven bean support
Message driven bean (MDB) components integrate the EJB 2.0 and Java
Message Service architectures. See “Message-driven beans” on page 71 for
more information.
EAServer Manager enhancements
You can now use EAServer Manager to add and configure the message service
components that allow you to send and receive messages. For more
information, see Chapter 8, “Setting up the Message Service,” in the EAServer
System Administration Guide.
Servlet, JSP, and Web application enhancements
EAServer 4.0 supports the Servlet 2.3 and JSP 1.2 specifications, and adds
support to connect Web applications hosted in EAServer to popular Web
servers such as Apache and Netscape.
Servlet filters and application lifecycle event handlers
EAServer 4.0 supports servlet filters. Using servlet filters, you can preprocess
servlet requests and postprocess servlet responses. You can install code that
executes in response to changes in the servlet context or HTTP sessions
associated with your Web application. For details on these features, see
Chapter 23, “Using Filters and Event Listeners,” in the EAServer
Programmer’s Guide.