servlet-mapping

I was reading Head First JSP and Servlets book. I was going through the mapping of servlet. And my doubt here is <servlet> <servlet-name>test</servlet-name> <servlet-class>com.avinash.TestServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>test</servlet-name> <url-pattern>/ServletBeer.do</url-pattern> </servlet-mapping> Why should the url-pattern start with forward slash( / )? What does the forward slash( / ) represent? Does it represent our webapp name? What happens if the url-pattern do not start with forward slash( / )? Is it a specification to start with forward slash( / )?

Why my filtering does not work for me and how to setup it to work? There is my web.xml : <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <display-name>GameServlet</display-name> <servlet-name>GameServlet</servlet-name> <servlet-class>ajaxdemo.action.GameServlet</servlet-class> <load-on-startup>0</load-on-startup> </servlet> <servlet-mapping> <servlet-name>GameServlet<

<servlet> <servlet-name>myservlet</servlet-name> <servlet-class>workflow.WDispatcher</servlet-class> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>myservlet</servlet-name> <url-pattern>*NEXTEVENT*</url-pattern> </servlet-mapping> Above is the snippet from Tomcat's web.xml . The URL pattern *NEXTEVENT* on start up throws java.lang.IllegalArgumentException: Invalid <url-pattern> in servlet mapping It will be greatly appreciated if someone can hint at the error. ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ McDowell <url-pattern>*NEXTEVENT*</url-pattern> The URL pattern is not

I have manually configured web.xml for my application. Now, I'm facing issues while running my application. I'm trying to access my servlet from my jsp page. But, it is throwing error as page not found . The servlets are placed under below folder location <application folder>/WEB-INF/classes/<package> So, what should be the entries for servlets in url-pattern and servlet-mapping . So that, servlet can be accessible through URL. url-pattern is used in web.xml to map your servlet to specific URL. Please see below xml code, similar code you may find in your web.xml configuration file. <servlet>