Jetty 8 and using ssl with jetty:run

<plugin>
  <groupid>org.mortbay.jetty</groupid>
  <artifactid>jetty-maven-plugin</artifactid>
  <version>8.0.4.v20111024</version>
  <configuration>
    <scanintervalseconds>5</scanintervalseconds>
    <webappconfig>
      <contextpath>/</contextpath>
    </webappconfig>
    <connectors>
      <connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector">
        <port>8080</port>
      </connector>
      <connector implementation="org.eclipse.jetty.server.ssl.SslSocketConnector">
        <port>8443</port>
        <keystore>/etc/keystore/keystore</keystore>
        <keypassword>password</keypassword>
        <password>password</password>
      </connector>
   </connectors>
</configuration>
</plugin>

Add this to your pom.xml inside <build> and <plugins> tags.
Of course you also need to have keystore in place. See Jetty/Howto/Configure_SSL.