jsf primefaces 两个数据表和两个列表

Question

我正在使用 jsf hibernate primefaces 开发一个项目。 在我的 xhtml 页面中有两个数据表。 当我单击数据表中的某一行时，它会在第二个数据表中显示详细信息。 我怎样才能做到这一点？ 谢谢

InfoProcess.java：

here is my complete InfoProcess.java code 

package com.revir.process;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.primefaces.event.SelectEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.revir.managed.bean.AddressBean;
import com.revir.managed.bean.OgrenimSureciBean;
import com.revir.domain.Adres;
import com.revir.domain.AdresDAO;
import com.revir.domain.Kisi;
import com.revir.domain.KisiDAO;
import com.revir.domain.Kisiadresi;
import com.revir.domain.Ogrenimsureci;
import com.revir.domain.OgrenimsureciDAO;
import com.revir.domain.Ulke;
import com.revir.process.KisiInfoProcess;

@ManagedBean(name = "userOS")
@SessionScoped
public class KisiInfoProcess implements Serializable {

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

    private static final Logger log = LoggerFactory
            .getLogger(KisiInfoProcess.class);

    private List<OgrenimSureciBean> osList;

    private List<AddressBean> adresList;

    private OgrenimSureciBean selectedOS;

    private AddressBean selectedAdres;

    public OgrenimSureciBean getSelectedOS() {
        getSelectedAdres();
        return selectedOS;
    }

    public void setSelectedOS(OgrenimSureciBean selectedOS) {
        this.selectedOS = selectedOS;
    }

    public AddressBean getSelectedAdres() {
        return selectedAdres;
    }

    public void setSelectedAdres(AddressBean selectedAdres) {
        this.selectedAdres = selectedAdres;
    }

    public List<OgrenimSureciBean> getOsList() {
        OgrenimsureciDAO ogrenimsureciDAO = new OgrenimsureciDAO();

        List<OgrenimSureciBean> osList = new ArrayList<OgrenimSureciBean>();

        for (Iterator i = ogrenimsureciDAO.findByMezunOgrenciler((short) 8)
                .iterator(); i.hasNext();) {
            Ogrenimsureci og = (Ogrenimsureci) i.next();
            OgrenimSureciBean osBean = new OgrenimSureciBean();

            osBean.setBolum(og.getBolum());
            osBean.setAd(og.getKisiByKisiid().getAd());
            osBean.setSoyad(og.getKisiByKisiid().getSoyad());
            osBean.setAltbirim(og.getAltbirim());
            osBean.setOgrencino(og.getOgrencino());
            osBean.setKisiid(og.getKisiByKisiid().getKisiid());
            osBean.setOgrencidurum(og.getOgrencidurum());

            osList.add(osBean);
            System.out.println("osBean : " + osBean.toString());

        }
        return osList;
    }

    public void setOsList(List<OgrenimSureciBean> osList) {
        this.osList = osList;
    }

    public void onRowSelect(SelectEvent event) {

        System.out.println("On Row Select Metodu çalıştı");

            try {
                getAdresList();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }


    }

    public List<AddressBean> getAdresList() throws Exception {

        log.debug("PersonalInfoProcess - getAddressInfo - Start");
        List<AddressBean> adresList = new ArrayList<AddressBean>();

        KisiDAO kisiDAO = new KisiDAO();
        AdresDAO adresDAO = new AdresDAO();

        Long kisiid = getSelectedOS().getKisiid();
        System.out.println("kisiid :" + kisiid);
        Kisi kisi = kisiDAO.findById(kisiid);

        for (Iterator i = kisi.getKisiadresis().iterator(); i.hasNext();) {

            Kisiadresi kisiAdresi = (Kisiadresi) i.next();
            System.out.println("i :" + i);
            Adres tmpAdres = adresDAO.findById(kisiAdresi.getId().getAdresid());

            if (tmpAdres != null) {
                AddressBean address = new AddressBean(kisiid);

                if (tmpAdres.getAdresturu() == null) {
                    address.setAddressType(null);
                } else {
                    address.setAddressType(tmpAdres.getAdresturu().getAd());
                }

                address.setAddress(tmpAdres.getAdres());

                if (tmpAdres.getIl() == null) {
                    address.setCity(null);
                } else {
                    address.setCity(tmpAdres.getIl().getAd());
                }

                if (tmpAdres.getUlke() == null) {
                    address.setCountry(null);
                } else {
                    address.setCountry(tmpAdres.getUlke().getAd());
                }

                adresList.add(address);

                System.out.println("adres" + address);
                System.out.println("adreslist" + adresList);
            }

            log.debug("PersonalInfoProcess - getAddressInfo - End / Returning");
        }
        return adresList;
    }

    public void setAdresList(List<AddressBean> adresList) {
        this.adresList = adresList;
    }

}

index.xhtml:

    <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<h:body>
    <f:view>
        <h:form id="form">
            <p:dataTable id="users" var="user" value="#{userOS.osList}"
                paginator="true" rows="10" rowKey="#{user.kisiid}"
                selection="#{userOS.selectedOS}" selectionMode="single">
                <f:facet name="header">  
                                        Kullanıcı detaylarını görmek için view butonuna tıklayınız
                                        </f:facet>
                <p:ajax event="rowSelect" listener="#{userOS.onRowSelect}" update=":form:display"
                    oncomplete="userDialog" />

                <p:column headerText="Student No" sortBy="ogrencino"
                    filterBy="ogrencino" id="ogrencino">
                    <h:outputText value="#{user.ogrencino}" />
                    <f:param name="kid" value="#{userOS.osList.rowIndex}" />
                </p:column>

                <p:column headerText="Name" sortBy="ad" filterBy="ad" id="ad">
                    <h:outputText value="#{user.ad}" />
                </p:column>
                <p:column headerText="Surname" sortBy="soyad" filterBy="soyad"
                    id="soyad">
                    <h:outputText value="#{user.soyad}" />
                </p:column>
                <p:column headerText="Faculty" sortBy="altbirim.ad"
                    filterBy="altbirim.ad" id="altbirim">
                    <h:outputText value="#{user.altbirim.ad}" />
                </p:column>
                <p:column headerText="Department" sortBy="bolum.ad"
                    filterBy="bolum.ad" id="bolum">
                    <h:outputText value="#{user.bolum.ad}" />
                </p:column>
                <p:column headerText="Status" sortBy="ogrencidurum.ad"
                    filterBy="ogrencidurum.ad" id="ogrencidurum">
                    <h:outputText value="#{user.ogrencidurum.ad}" />
                </p:column>

                <f:facet name="footer">
                </f:facet>
            </p:dataTable>

            <p:panel id="dialog" header="User Detail" widgetVar="userDialog">

                <h:panelGrid id="panelgrid" columns="2" cellpadding="4">
                    <p:dataTable id="display" var="adres" value="#{userOS.adresList}">
                        <p:column headerText="Adres Tipi">
                            <h:outputText value="#{adres.addressType}" />
                        </p:column>
                        <p:column headerText="Adres">
                            <h:outputText value="#{adres.address}" />
                        </p:column>
                        <p:column headerText="İl">
                            <h:outputText value="#{adres.city}" />
                        </p:column>
                        <p:column headerText="Ülke">
                            <h:outputText value="#{adres.country}" />
                        </p:column>
                    </p:dataTable>
                </h:panelGrid>

            </p:panel>


        </h:form>
    </f:view>
</h:body>
</html>

Answer 1

看起来一个操作系统可以有不同的地址，对吧？第二个数据表不应将 {userOS.selectedOS} 作为其值。相反，它应该指向应该在您的onRowSelect()method 中填充的地址列表。请记住，数据表需要一个作为某种集合的对象的值才能工作。 {userOS.selectedOS} 并非如此。

这是我要做的：

1. 将地址列表添加到您的 bean 并在您的 onRowSelect() 方法中填充该列表
2. 为该列表创建一个 getter
3. 使您的第二个数据表指向该列表；
4. 从您的p:ajax 标记中删除oncomplete="userDialog"（它可能会给您一个javascript 错误，除非您在某处有一个带有该名称的p:remoteCommand）
5. 虽然您应该能够直接从p:ajax 更新数据表，但我过去曾遇到过这样的问题，所以我通常只是将一个矿井包装在一个面板组中，然后更新面板组。如果您遇到问题，请尝试一下。

关于你的操作系统列表（第一个数据表）：永远不要使用 getter 来执行复杂的操作（比如访问数据库）。这些 getter 在 JSF 生命周期中被执行了很多次，你不想重复对数据库的一堆查询，对吧？在方法 getOsList() 的开头打印一些东西到控制台，或者如果你不相信我的话，可以在那里设置一个断点。您应该在您的 bean 中声明一个列表并在适当的时候填充该列表。如果您使用会话范围的 bean，则每次导航到该页面时都需要填充列表。如果您使用的是视图/请求范围的 bean，那么 bean 构造函数将是填充列表的好地方。

编辑：

将此添加到您的 xhtml 中的表单标签中：

...
<h:form prependId="false">
        <f:metadata>
            <f:event type="preRenderView"
                listener="#{userOS.populateOsList}" />
        </f:metadata>
...

这将在您加载页面时填充操作系统列表。在这里执行此操作很重要，因为您的 bean 是会话范围的，并且在构造函数中加载列表可能会引入一些问题。

我重构了你的 bean 代码。试试这个：

@ManagedBean(name = "userOS")
@SessionScoped
public class KisiInfoProcess implements Serializable {

    private static final long serialVersionUID = 1L;
    private static final Logger log = LoggerFactory
            .getLogger(KisiInfoProcess.class);
    private List<OgrenimSureciBean> osList;
    private List<AddressBean> adresList;
    private OgrenimSureciBean selectedOS;
    private AddressBean selectedAdres;

    public OgrenimSureciBean getSelectedOS() {
        return selectedOS;
    }
    public void setSelectedOS(OgrenimSureciBean selectedOS) {
        this.selectedOS = selectedOS;
    }
    public AddressBean getSelectedAdres() {
        return selectedAdres;
    }
    public void setSelectedAdres(AddressBean selectedAdres) {
        this.selectedAdres = selectedAdres;
    }

    public void setOsList(List<OgrenimSureciBean> osList) {
        this.osList = osList;
    }

    public List<OgrenimSureciBean> getOsList(){
        return this.osList;
    }

    public void setAdresList(List<AddressBean> adresList) {
        this.adresList = adresList;
    }

    public List<AdressBean> getAdresList(){
        return this.adresList;
    }

    public void onRowSelect(SelectEvent event) {
        try {
            populateAddresList((OgrenimSureciBean) event.getObject());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void populateOsList() {
        OgrenimsureciDAO ogrenimsureciDAO = new OgrenimsureciDAO();

        osList = new ArrayList<OgrenimSureciBean>();

        for (Iterator i = ogrenimsureciDAO.findByMezunOgrenciler((short) 8)
                .iterator(); i.hasNext();) {
            Ogrenimsureci og = (Ogrenimsureci) i.next();
            OgrenimSureciBean osBean = new OgrenimSureciBean();

            osBean.setBolum(og.getBolum());
            osBean.setAd(og.getKisiByKisiid().getAd());
            osBean.setSoyad(og.getKisiByKisiid().getSoyad());
            osBean.setAltbirim(og.getAltbirim());
            osBean.setOgrencino(og.getOgrencino());
            osBean.setKisiid(og.getKisiByKisiid().getKisiid());
            osBean.setOgrencidurum(og.getOgrencidurum());

            osList.add(osBean);
            System.out.println("osBean : " + osBean.toString());

        }
        return osList;
    }

    public void populateAddresList(OgrenimSureciBean selected) throws Exception {

        log.debug("PersonalInfoProcess - getAddressInfo - Start");
        adresList = new ArrayList<AddressBean>();

        KisiDAO kisiDAO = new KisiDAO();
        AdresDAO adresDAO = new AdresDAO();

        Long kisiid = selected.getKisiid();
        System.out.println("kisiid :" + kisiid);
        Kisi kisi = kisiDAO.findById(kisiid);

        for (Iterator i = kisi.getKisiadresis().iterator(); i.hasNext();) {

            Kisiadresi kisiAdresi = (Kisiadresi) i.next();
            System.out.println("i :" + i);
            Adres tmpAdres = adresDAO.findById(kisiAdresi.getId().getAdresid());

            if (tmpAdres != null) {
                AddressBean address = new AddressBean(kisiid);

                if (tmpAdres.getAdresturu() == null) {
                    address.setAddressType(null);
                } else {
                    address.setAddressType(tmpAdres.getAdresturu().getAd());
                }

                address.setAddress(tmpAdres.getAdres());

                if (tmpAdres.getIl() == null) {
                    address.setCity(null);
                } else {
                    address.setCity(tmpAdres.getIl().getAd());
                }

                if (tmpAdres.getUlke() == null) {
                    address.setCountry(null);
                } else {
                    address.setCountry(tmpAdres.getUlke().getAd());
                }

                adresList.add(address);

                System.out.println("adres" + address);
                System.out.println("adreslist" + adresList);
            }

            log.debug("PersonalInfoProcess - getAddressInfo - End / Returning");
        }
    }
}

请注意，填充方法不返回列表；他们使用在 bean 本身上声明的列表。这些是您将页面指向的列表。