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POJava / Jetty: How to Add Filter to Embedded Jetty
 

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  1. POJava / Jetty: How to Add Filter to Embedded Jetty
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    <p>I am working with embedded Jetty and I want to add a servlet filter to check for authentication before each request. I tried following <a href="http://permalink.gmane.org/gmane.comp.java.jetty.support/14273">this example</a> but it looks like the signature has changed.</p> <pre><code>&lt;dependency&gt; &lt;groupId&gt;org.eclipse.jetty&lt;/groupId&gt; &lt;artifactId&gt;jetty-server&lt;/artifactId&gt; &lt;version&gt;9.0.4.v20130625&lt;/version&gt; &lt;/dependency&gt; </code></pre> <p>My Jetty starter looks like this:</p> <pre><code>public class JettyStarter { public static void main( final String[] args ) throws Exception { Server server = new Server(8080); final ServletHolder servletHolder = new ServletHolder(new CXFServlet()); final ServletContextHandler context = new ServletContextHandler(); context.setContextPath("/"); // context.addFilter(AuthenticationFilter.class, "/*", FilterMapping.REQUEST); context.addServlet(servletHolder, "/platform/*"); context.addEventListener(new ContextLoaderListener()); context.setInitParameter("contextClass", AnnotationConfigWebApplicationContext.class.getName()); context.setInitParameter("contextConfigLocation", Config.class.getName()); server.setHandler(context); server.start(); server.join(); } } </code></pre> <p>When I uncomment the line </p> <pre><code>// context.addFilter(AuthenticationFilter.class, "/*", FilterMapping.REQUEST); </code></pre> <p>I find that the signature has changed. So I want to take a small step back and ask, with embedded Jetty, how do I add a filter that runs at the beginning of the request and allows the request to continue only if some condition is met? </p> <p>The beginning of the AuthenticationFilter class looks like this:</p> <pre><code>import javax.servlet.*; import java.io.IOException; public class AuthenticationFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException {} @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {} @Override public void destroy() {} } </code></pre>
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    1. USDavid Williams
    1. USDavid Williams
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    1. COI don't understand. What's wrong with the `addFilter` method?
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      1. POJava / Jetty: How to Add Filter to Embedded Jetty
      1. USSotirios Delimanolis
    2. COHi Sotirios, thanks for the reply, it looks like the signature is now different and the third argument `FilterMapping.REQUEST` now needs to be wrapped in an enum set. There are no examples on this anywhere that Ive seen yet.
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      1. POJava / Jetty: How to Add Filter to Embedded Jetty
      1. USDavid Williams
 

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