Why do we use web.xml? [closed]

by

Generally speaking, this is the configuration file of web applications in java. It instructs the servlet container (tomcat for ex.) which classes to load, what parameters to set in the context, and how to intercept requests coming from browsers.

There you specify:

  • what servlets (and filters) you want to use and what URLs you want to map them to
  • listeners – classes that are notified when some events happen (context starts, session created, etc)
  • configuration parameters (context-params)
  • error pages, welcome files
  • security constraints

In servlet 3.0 many of the web.xml parts are optional. These configurations can be done via annotations (@WebServlet, @WebListener)

More Related Contents:

  1. Session TimeOut in web.xml
  2. How can I upload files to a server using JSP/Servlet?
  3. What is the difference between JSF, Servlet and JSP?
  4. How to specify the default error page in web.xml?
  5. Servlet for serving static content
  6. What is the significance of url-pattern in web.xml and how to configure servlet?
  7. why business logic should be moved out of JSP?
  8. How to force browser to download file?
  9. How to read request.getInputStream() multiple times
  10. Adding an HTTP Header to the request in a servlet filter
  11. How are Servlet url mappings in web.xml used?
  12. Which compression (is GZIP the most popular) servlet filter would you suggest?
  13. How are Threads allocated to handle Servlet request?
  14. Embedded tomcat 7 servlet 3.0 annotations not working
  15. The ultimate Java version table (J2EE, Java EE, Servlet, JSP, JSTL)
  16. How to properly logout of a Java EE 6 Web Application after logging in
  17. Correct usage of Stateful Beans with Servlets
  18. Do I really need web.xml for a Servlet based Java web application?
  19. Call a servlet on click of hyperlink
  20. Maven dependency for Servlet 3.0 API?
  21. How to set session timeout dynamically in Java web applications?
  22. Access Spring beans from a servlet in JBoss
  23. How to store a file on a server(web container) through a Java EE web application?
  24. How to exclude one url from authorization
  25. Difference between include and forward mechanism for request dispatching concept?
  26. How can I manually load a Java session using a JSESSIONID?
  27. Tomcat 10.0.4 doesn’t load servlets (@WebServlet classes) with 404 error [duplicate]
  28. Java 11 package javax.xml.bind does not exist [duplicate]
  29. java.lang.VerifyError: Expecting a stackmap frame
  30. Java 11 package javax.xml.soap does not exist [duplicate]

Leave a Comment