How do I create a URL pattern in WEB xml?

The element specifies a URL pattern and the name of a declared servlet to use for requests whose URL matches the pattern. The URL pattern can use an asterisk ( * ) at the beginning or end of the pattern to indicate zero or more of any character.

In which directory can we put WEB xml in servlet?

WEB-INF/ directory
This file is named web. xml , and resides in the app’s WAR under the WEB-INF/ directory. web. xml is part of the servlet standard for web applications.

Which tags are belongs to WEB xml?

web. xml Deployment Descriptor Elements

• context-param.
• description.
• display-name.
• distributable.
• ejb-ref.
• ejb-local-ref.
• env-entry.
• error-page.

In which directory can we put WEB xml?

WEB-INF directory
The web. xml file is located in the WEB-INF directory of your Web application.

What is the significance of URL pattern in web.xml?

Java Servlet url-pattern Specification: A string beginning with a ‘/’ character and ending with a ‘/*’ suffix is used for path mapping. A string beginning with a ‘*.’ prefix is used as an extension mapping. A string containing only the ‘/’ character indicates the “default” servlet of the application.

Which is a bad URL pattern for a servlet?

/* The /* on a servlet overrides all other servlets, including all servlets provided by the servletcontainer such as the default servlet and the JSP servlet. Whatever request you fire, it will end up in that servlet. This is thus a bad URL pattern for servlets.

How to declare multiple servlets in web.xml?

You can declare multiple servlets using the same class with different initialization parameters. The name for each servlet must be unique across the deployment descriptor. The element specifies a URL pattern and the name of a declared servlet to use for requests whose URL matches the pattern.

Which is the default mapping for URL pattern?

Third specification of url-mapping ,A mapping that contains the pattern / matches a request if no other pattern matches. This is the default mapping. The servlet mapped to this pattern is called the default servlet.