scheduler-portlet.xml

        <icon>/icon.png</icon>

         <scheduler-entry>
            <scheduler-event-listener-class>com.ys.schedule.Schedular</scheduler-event-listener-class>
            <trigger>
<!--                 <simple>
                    <simple-trigger-value>1</simple-trigger-value>
                    <time-unit>minute</time-unit>
                </simple> -->
                  <cron>
                    <cron-trigger-value>0 0/1 * 1/1 * ? *</cron-trigger-value>
                  </cron>
            </trigger>
        </scheduler-entry>

        <instanceable>false</instanceable>