commanLink在p：dataTable中不起作用

    <ui:define name=\"center\">
        <h:form id=\"form1\">
            <p:dataTable id=\"userDataTable\"
                 value=\"#{adminstratorBean.periodicalUsers}\" var=\"user\"
                paginator=\"true\" rows=\"10\"
                paginatorTemplate=\"{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}\"
                rowsPerPageTemplate=\"5,10,15\">
                <f:facet name=\"header\">  
                        Ajax Pagination   
                    </f:facet>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Id\" />
                    </f:facet>
                    <h:outputText value=\"#{user.id}\"></h:outputText>
                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Name\" />
                    </f:facet>
                    <h:outputText value=\"#{user.name}\"></h:outputText>

                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Password\" />
                    </f:facet>
                    <h:outputText value=\"#{user.password}\"></h:outputText>

                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Sex\" />
                    </f:facet>
                    <h:outputText value=\"#{user.sex}\"></h:outputText>

                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Email\" />
                    </f:facet>
                    <h:outputText value=\"#{user.mail}\"></h:outputText>

                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Phone\" />
                    </f:facet>
                    <h:outputText value=\"#{user.phone}\"></h:outputText>

                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Birthday\" />
                    </f:facet>
                    <h:outputText value=\"#{user.birthday}\">
                        <f:convertDateTime type=\"date\"></f:convertDateTime>
                    </h:outputText>
                </p:column>
                <p:column>
                    <f:facet name=\"header\">
                        <h:outputText value=\"Delete\" />
                    </f:facet>
                    <h:commandLink value=\"#{msgs.delete}\"
                        actionListener=\"#{adminstratorBean.deleteUser(user)}\">
                    </h:commandLink>
                </p:column>
            </p:dataTable>
        </h:form>
    </ui:define>

package wls.bean;

import java.io.Serializable;
import java.util.List;

import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.event.ActionEvent;

import org.primefaces.component.datatable.DataTable;

import wls.entity.*;
import wls.myEJB.*;
@ManagedBean
@SessionScoped
public class AdminstratorBean implements Serializable{
    @EJB
    CommonEJBLocal commonEJB;
    @EJB
    AdminstratorEJBLocal adminstratorEJB;

    List<PeriodicalUser> periodicalUsers;

    //Logic Method
    public List<PeriodicalUser> getPeriodicalUsers() {
        periodicalUsers = adminstratorEJB.listPeriodicalUser();
        return periodicalUsers;
    }

    public String deleteUser(PeriodicalUser selectedUser) {
        System.out.println(\"DEledsfkjsdlkfjldkfjldsk\");
        System.out.println(selectedUser.getName());
        adminstratorEJB.deletePeriodicalUser(selectedUser.getId());
        return null;
    }