Servlet Mapping: A Comprehensive Guide

Servlet mapping is the process of associating a URL pattern with a specific servlet in a Java web application. It defines how incoming requests should be directed to the appropriate servlet for processing.

In a servlet mapping configuration, the URL pattern specifies a particular URL or a pattern of URLs that should be handled by a specific servlet. When a request is received by the web server, it checks the URL pattern defined in the servlet mapping configuration and forwards the request to the corresponding servlet for further processing.

Servlet mapping can be done in two ways:

Using deployment descriptor (web.xml): In the web.xml file of a Java web application, servlet mapping can be defined using the '' element. This element specifies the servlet name and the URL pattern that should be associated with it.
Using annotations: In modern Java web applications, servlet mapping can also be done using annotations. The '@WebServlet' annotation can be used to specify the URL pattern for a servlet directly in the servlet class.

Servlet mapping allows for flexible handling of different URLs by different servlets, enabling the development of dynamic and interactive web applications.