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POHow to make run a servlet filter?
 

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  1. POHow to make run a servlet filter?
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    <p>For my web application, i have created login page. To block the access to the other pages i setup a filter. But while running the web app, it gives <code>Servlet class com.pricar.grid.AuthenticationFilter is not a javax.servlet.Servlet</code>. </p> <p>I also cant able to get the proper result.</p> <p>Here my Code: <strong>filter config in web.xml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="ISO-8859-1"?&gt; &lt;!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"&gt; &lt;web-app&gt; &lt;display-name&gt;Staff Management&lt;/display-name&gt; &lt;filter&gt; &lt;filter-name&gt;AuthenticationFilter&lt;/filter-name&gt; &lt;display-name&gt;AuthenticationFilter&lt;/display-name&gt; &lt;description&gt;&lt;/description&gt; &lt;filter-class&gt;com.pricar.grid.AuthenticationFilter&lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;AuthenticationFilter&lt;/filter-name&gt; &lt;url-pattern&gt;/StaffManagementSystem/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;servlet&gt; &lt;servlet-name&gt;dwr-invoker&lt;/servlet-name&gt; &lt;display-name&gt;DWR Servlet&lt;/display-name&gt; &lt;description&gt;Direct Web Remoter Servlet&lt;/description&gt; &lt;servlet-class&gt;uk.ltd.getahead.dwr.DWRServlet&lt;/servlet-class&gt; &lt;init-param&gt; &lt;param-name&gt;debug&lt;/param-name&gt; &lt;param-value&gt;true&lt;/param-value&gt; &lt;/init-param&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;dwr-invoker&lt;/servlet-name&gt; &lt;url-pattern&gt;/dwr/*&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;welcome-file-list&gt; &lt;welcome-file&gt;UserLogin.html&lt;/welcome-file&gt; &lt;/welcome-file-list&gt; &lt;/web-app&gt; </code></pre> <p><strong>The Filter code is:</strong></p> <pre><code>package com.pricar.grid; public class AuthenticationFilter implements Filter { public AuthenticationFilter() { // TODO Auto-generated constructor stub } public void destroy() { // TODO Auto-generated method stub } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { WebContext ctx = WebContextFactory.get(); HttpServletRequest req = ctx.getHttpServletRequest(); HttpSession session = req.getSession(false); String name = (String) session.getAttribute("userName"); System.out.print ("Within Simple Filter ... "); System.out.println ("Filtering the Request ..."); System.out.print ("Within Simple Filter ... "); System.out.println ("Filtering the Response ..."); if ( name == null ){ //I have to redirect to the person to index page. ((HttpServletResponse) response).sendRedirect("index.html"); } chain.doFilter(request, response); } public void init(FilterConfig fConfig) throws ServletException { // TODO Auto-generated method stub } } </code></pre> <p>The URL i am trying to test is <a href="http://localhost:8080/StaffManagementSystem/EmployeeManagement.html" rel="nofollow noreferrer">http://localhost:8080/StaffManagementSystem/EmployeeManagement.html</a></p> <p>i am using jetty as a server.</p> <p><strong>Any suggestions would be appreciative!!! Thanks in Advance!!</strong></p> <hr> <p><strong>Final Update:</strong></p> <p>All the changes that mentioned, were done. Its getting compiled. I cant even able to get the "sysout" output in my console. Its simply passing the URL. </p>
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    1. CODo you have any servlet-mappings in web.xml?
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    2. CO@matt b: Now updated my Question. Check it out!!!
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