How to use request.getcontextpath

Editor to share with you how to use request.getcontextpath, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Recently, there is a bit of confusion about several "paths" in requestgetcontextpath, and there is no good summary of finding online resources. I hope this article can help me understand these "paths".

How to get the path by requestgetcontextpath:

Request.getServletPath ()

Request.getPathInfo ()

Request.getContextPath ()

Request.getRequestURI ()

Request.getRequestURL ()

Request.getServletContext () .getRealPath ()

A simple example of requestgetcontextpath

Web.xml configuration (note the url-pattern entry here)

Aab

A.jsp

Test

Com.java.test.TestServlet

Test

/ *

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