java ee 6 - ServletRequestListener - Getting the userprincipal returns null -


i'm having web-application secured http-basic auth. implemented filter using servletrequestlistener interface. when filter calls requestinitialized method, getuserprincipal-method of request returns null. when check request headers, authorization-header set encrypted value. here's code:

@override public void requestinitialized(servletrequestevent e) {    httpservletrequest request = (httpservletrequest) e.getservletrequest();    //p null   principal p = request.getuserprincipal();    enumeration<string> enh = request.getheaders("authorization");   while (enh.hasmoreelements()) {     string s = enh.nextelement();     system.out.println(s);     //prints.      //basic c3rhy2tvdmvyzmxvdzptexbhc3n3b3jk   } }

why userprincipal not initialized?

you not setting needed security layers embedded-jetty.

here's example found in jetty embedded examples source tree.

package org.eclipse.jetty.embedded;  import java.util.collections; import java.util.hashset; import java.util.set;  import org.eclipse.jetty.security.constraintmapping; import org.eclipse.jetty.security.constraintsecurityhandler; import org.eclipse.jetty.security.hashloginservice; import org.eclipse.jetty.security.loginservice; import org.eclipse.jetty.security.authentication.basicauthenticator; import org.eclipse.jetty.server.server; import org.eclipse.jetty.util.security.constraint;  public class securedhellohandler {     public static void main(string[] args) throws exception     {         server server = new server(8080);          loginservice loginservice = new hashloginservice("myrealm","src/test/resources/realm.properties");         server.addbean(loginservice);           constraintsecurityhandler security = new constraintsecurityhandler();         server.sethandler(security);          constraint constraint = new constraint();         constraint.setname("auth");         constraint.setauthenticate( true );         constraint.setroles(new string[]{"user", "admin"});          constraintmapping mapping = new constraintmapping();         mapping.setpathspec( "/*" );         mapping.setconstraint( constraint );          set<string> knownroles = new hashset<string>();         knownroles.add("user");         knownroles.add("admin");          security.setconstraintmappings(collections.singletonlist(mapping), knownroles);         security.setauthenticator(new basicauthenticator());         security.setloginservice(loginservice);         security.setstrict(false);          // handler (or servlet) should secured         hellohandler hh = new hellohandler();          security.sethandler(hh);          server.start();         server.join();     } }

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