Редирект с index.jsp на сервлет.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Practicle 10. Servlets and JSP</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <display-name>ItemsContentHandler</display-name>
    <servlet-name>ItemsContentHandler</servlet-name>
    <servlet-class>com.test.servlets.ItemsContentHandler</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>ItemsContentHandler</servlet-name>
    <url-pattern>/index.jsp</url-pattern>
  </servlet-mapping>
</web-app>

	protected void service(HttpServletRequest request, HttpServletResponse
	    response) throws ServletException, IOException {

		// ... Инициализация и наполнение данными internalItems ... //
		request.getSession().setAttribute("itemList", internalItems);
		RequestDispatcher dispatcher = getServletContext().
		        getRequestDispatcher("/index.jsp");

		dispatcher.forward(request, response);
	}

  <servlet-mapping>
    <servlet-name>ItemsContentHandler</servlet-name>
    <url-pattern>/index.jsp</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>ItemsContentHandler</servlet-name>
    <url-pattern>/test</url-pattern>
  </servlet-mapping>