Liferay与primefaces portlet数据表无法正常工作

Question

我在Liferay 6.2中使用Service builder创建了一个primefaces portlet，但是我有一个问题。我需要具有分页的组件数据表，但它不起作用。这是我的观点代码：

<?xml version="1.0"?>

<f:view xmlns="http://www.w3.org/1999/xhtml"
    xmlns:c="http://java.sun.com/jsp/jstl/core"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">
    <h:head />
    <h:body>
        <h:form>
            <p:dataTable id="registryList" var="RegistryRequest"
                value="#{dtRegistryList.registries}" rows="2" paginator="true"
                paginatorTemplate="{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
                rowsPerPageTemplate="5,10,15">
                <p:column headerText="First Name"
                    sortBy="#{RegistryRequest.firstName}">
                    <h:outputText value="#{RegistryRequest.firstName}" />
                </p:column>
                <p:column headerText="Last Name">
                    <h:outputText value="#{RegistryRequest.lastName}" />
                </p:column>
                <p:column headerText="Second Last Name">
                    <h:outputText value="#{RegistryRequest.secondLastName}" />
                </p:column>
            </p:dataTable>
        </h:form>
    </h:body>
</f:view>

我的注册表列表

package com.registryadminportlet.view;

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

import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.ViewScoped;

import com.registryadminportlet.service.RegistryRequestService;
import com.registryportlet.RegistryModel.model.RegistryRequest;


@ManagedBean(name="dtRegistryList")
@ViewScoped
public class RegistryList implements Serializable {


    private List<RegistryRequest> registries;

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @ManagedProperty("#{registryService}")
    private RegistryRequestService service;


    @PostConstruct
    public void init(){
        registries = service.getFromDB();
    }

    public List<RegistryRequest> getRegistries(){
        return registries;
    }

    public void setRegistry(RegistryRequestService service){
        this.service = service;
    }

}

最后，我的RegistryRequestService

package com.registryadminportlet.service;

import java.util.List;

import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;

import com.liferay.portal.kernel.exception.SystemException;
import com.registryportlet.RegistryModel.model.RegistryRequest;
import com.registryportlet.RegistryModel.service.RegistryRequestLocalServiceUtil;

@ManagedBean(name = "registryService")
@ApplicationScoped
public class RegistryRequestService {

    public List<RegistryRequest> getFromDB(){
        int total = 0;
        List<RegistryRequest> listado = null;
        try {
            total = RegistryRequestLocalServiceUtil.getRegistryRequestsCount();
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            listado = RegistryRequestLocalServiceUtil.getRegistryRequests(0, total);
        } catch (SystemException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return listado;
    }

}

如果有人知道为什么我的数据表不能正常工作，我将非常感激。

提前谢谢