A Programmatic Approach of Configuring web.xml - CodeProject
As a traditional approach, any servlet context and other listeners are configured by making entries in the web.xml file in any Java/J2ee web based application. In contrast to this, the introduction of servlet 3.0 aims to provide a programmatic approach to configure the entries of web.xml.
Any servlet 3.0 based web application can just implement the interface a ServletContainerInitializer interface, which the ServletContext interface will be explicitly passed at the runtime and acts as a representation of the container. This can be used to configure servlet, listeners, any filters and other contents which was normally specified in the typical web.xml file.
With advanced spring framework 3.1 and above, this implementation has been made much easier because it provides an implementation of ServletContainerInitializer known as the SpringServletContainerInitializer. Basically, it registers the implementation through the META-INF/services/java.servlet.ServletContainerInitializer file in the spring web module file. Also, the task of configuring the servlet context, listeners, and filters will be delegated to another interface of spring called WebApplicationInitializer.
The only task for the developer is to implement the WebApplicationInitializer and configure the servlet context in the implementation.
Let us see a sample on how to implement the same.
Read full article from A Programmatic Approach of Configuring web.xml - CodeProject
No comments:
Post a Comment