web.xml ?

Hello Dear,

Please Tell Me What is web.xml ?

Web.xml file is the configuration file of web applications in java. It instructs the servlet container which classes to load, what parameters to set in the context, and how to intercept requests coming from browsers. Web.xml is called as deployment descriptor file.

Java web applications use a deployment descriptor file to determine how URLs map to servlets, which URLs require authentication, and other information. web.xml is part of the servlet standard for web applications.


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Web.xml defines mapping between URL paths and servlets that handle requests with those paths.

The web.xml file is the deployment descriptor for a Servlet-based Java web application (which most Java web apps are). Among other things, it declares which Servlets exist and which URLs they handle. The part you cite defines a Servlet Filter.

web.xml is the configuration file of web applications in java. It is present in the WEB-INF folder. It is also known as deployment descriptor and it plays very important role in mapping and url-hiding.

It instructs the servlet container which classes to load, what parameters to set in the context, and how to intercept requests coming from browsers.

We use Web.xml file in Java programming language for software development. https://iacupunctureca.com/

The web. xml file is the deployment descriptor for a Servlet-based Java web application (which most Java web apps are). Among other things, it declares which Servlets exist and which URLs they handle. The part you cite defines a Servlet Filter. Servlet filters can do all kinds of preprocessing on requests.

Hi Friends,

When we create a dynamic web project in java we include a xml file called web.xml in the project. It is also called deployment descriptor.

It instructs the servlet container (e.g Tomcat) which classes to load, what parameters to set in the context, and how to intercept requests coming from browsers.

In a web.xml we have entries of the following:

• Servlets and URL patterns to invoke them.
• Filters and their mappings.
• Listeners - classes that are notified when some events happen (context starts, session created, etc)
• Configuration parameters (context-params)
• Error pages, welcome files
• Security constriants

The web. xml file is the deployment descriptor for a Servlet-based Java web application (which most Java web apps are). Among other things, it declares which Servlets exist and which URLs they handle. The part you cite defines a Servlet Filter. Servlet filters can do all kinds of preprocessing on requests.

It is the configuration file of web applications in java.

The web. xml file is the deployment descriptor for a Servlet-based Java web application (which most Java web apps are). Among other things, it declares which Servlets exist and which URLs they handle. The part you cite defines a Servlet Filter. Servlet filters can do all kinds of preprocessing on requests.