开发基于JBoss AS 7.2.0的Java EE程序 - 07.翻页

Version 4

Created by ybxiang.china on Sep 6, 2013 12:55 AM. Last modified by ybxiang.china on Sep 10, 2013 2:34 AM.

英文：JBoss AS 7.2.0 - Java EE application development - 07.EJB and JSF Pagination framework

概述

任何网站在显示大量的记录的时候，总是采用分页显示，本站 http://javaarm.com 也不例外。我们在本章描述的是 http://javaarm.com 的万能分页框架，它代码量小，但是很灵活、方便，本站的所有翻页显示，都是用该分页框架做的。

这个框架花费了我很多的心血，希望对大家有用。

1. EJB 分页查询框架

1.1 ICriteria.java

这是通用查询条件顶层接口

public interface ICriteria {
}

1.2 XTwoParametersCondition.java

这是带2个参数的查询条件

import java.io.Serializable;

public class XTwoParametersCondition implements ICriteria,Serializable {
    private static final long serialVersionUID = 1L;

    public final String attributeName;
    public final XCompareOperator compareOperator;
    public final Object value;

    public XTwoParametersCondition(String attributeName,XCompareOperator compareOperator, Object value){
        this.attributeName = attributeName;
        this.compareOperator = compareOperator;
        this.value = value;
    }
}

1.3 XCompareOperator.java

这是比较类型，用于定义各种比较算子对应 SQL/JPQL 里面比较符号。

import java.io.Serializable;

public class XCompareOperator implements Serializable {
    private static final long serialVersionUID = 1L;
    //
    public static final XCompareOperator eq = new XCompareOperator("eq","=");
    public static final XCompareOperator ne = new XCompareOperator("ne","<>");//"!=" is OK too!
    public static final XCompareOperator lt = new XCompareOperator("eq","<");
    public static final XCompareOperator le = new XCompareOperator("eq","<=");
    public static final XCompareOperator gt = new XCompareOperator("eq",">");
    public static final XCompareOperator ge = new XCompareOperator("eq",">=");
    public static final XCompareOperator like = new XCompareOperator("like","like");

    public final String sqlSymbol;
    public final String jpqlSymbol;
    public XCompareOperator(String sqlSymbol, String jpqlSymbol){
        this.sqlSymbol = sqlSymbol;
        this.jpqlSymbol = jpqlSymbol;
    }
}

1.4 XOrder.java

这是排序类型。

import java.io.Serializable;

public class XOrder implements Serializable{
    private static final long serialVersionUID = 1L;

    public final String attributeName;//参与排序的属性的名字
    public final boolean asc;//升序
    public XOrder(String attributeName,boolean asc){
        this.attributeName = attributeName;
        this.asc = asc;
    }
}

1.5 XPager.java

这是分页信息存储器

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

public class XPager implements Serializable {
    private static final long serialVersionUID = 1L;
    public static final int DEFAULT_PAGESIZE = 50;//50
    public static final int MINIMUM_PAGESIZE = 10;
    public static final int MAXIMUM_PAGESIZE = 100;
    public static final int MAX_PAGESIZE = 300;
    public static final int PAGENUM_START = 1;

    public static final String CRITERIA_FLAG = "?";

    public int pageSize = DEFAULT_PAGESIZE;//翻页 size
    public int pageNum = PAGENUM_START;//从1开始; 要获取的某页的数据

    public String wherePattern;//格式:((?)AND(?)) OR ?
    public List<ICriteria> conditionList;//查询条件约束列表，依次替代wherePattern中的 '?'
    //
    public List<XOrder> orderby;
}

1.6 QueryResult.java

这是分页结果信息存储器。

import java.io.Serializable;

import java.util.ArrayList;

import java.util.List;

public class QueryResult implements Serializable {

private static final long serialVersionUID = 1L;

public int pageSize = XPager.DEFAULT_PAGESIZE;//翻页 size

public int pageNum = XPager.PAGENUM_START;//从1开始; 要获取的某页的数据

public int totalRecords = 0;//返回给用户

public int totalPages = XPager.PAGENUM_START;//返回给用户

@SuppressWarnings("rawtypes")

public List records = new ArrayList();//默认空列表

}

1.7 PagerHelper.java

这是最关键的分页辅助类！

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.Query;

import org.jboss.logging.Logger;

public class PagerHelper {
    public static final Logger log = Logger.getLogger(PagerHelper.class);

    @SuppressWarnings("rawtypes")
    public static final QueryResult getResult(Class clz, EntityManager em, XPager pager){
        QueryResult queryResult = new QueryResult();
        try{
            /*************************************[预处理]*************************************/
            if(pager.pageNum<1){
                pager.pageNum = XPager.PAGENUM_START;
            }

            if(pager.pageSize<XPager.MINIMUM_PAGESIZE || pager.pageSize>XPager.MAXIMUM_PAGESIZE){
                pager.pageSize = XPager.DEFAULT_PAGESIZE;
            }

            //
            queryResult.pageNum = pager.pageNum;
            queryResult.pageSize = pager.pageSize;

            /*************************************[求总记录数]*************************************/
            HashMap<String,Object> parameterNameValuePairs = new HashMap<String,Object>();
            final String whereJpql = getWhereJpql(pager,parameterNameValuePairs).trim();
            final String orderbyJpql = getOrderbyJpql(pager).trim();

            final String countJpql = "SELECT COUNT(*) FROM "+ clz.getName()+" obj "+(whereJpql.equals("")?" ":" WHERE "+whereJpql);
            final String queryJpql = "SELECT obj FROM "+ clz.getName()+" obj "
                    +(whereJpql.equals("")?" ":" WHERE "+whereJpql)
                    +(orderbyJpql.equals("")?" ":" ORDER BY "+orderbyJpql);
            /*************************************[求总记录数]*************************************/

            int totalRecords = 0;
            try{
                //
                Query whereQuery = em.createQuery(countJpql);
                Iterator<String> it = parameterNameValuePairs.keySet().iterator();
                while(it.hasNext()){
                    String parameterName = it.next();
                    Object parameterValue = parameterNameValuePairs.get(parameterName);
                    whereQuery.setParameter(parameterName, parameterValue);
                }
                totalRecords = Integer.parseInt(whereQuery.getSingleResult().toString());
            }catch(Exception e){
                log.error(e);
            }
            queryResult.totalRecords = totalRecords;

            /*************************************[分页]*************************************/
            int remain = totalRecords % pager.pageSize;
            int totalPages = totalRecords / pager.pageSize + (remain==0?0:1);
            if(totalPages==0){//总记录为0 时，到这里可能依旧为0.
                totalPages=1;
            }
            queryResult.totalPages = totalPages;
            //
            if(pager.pageNum>totalPages){
                pager.pageNum = totalPages;
                queryResult.pageNum = totalPages;
            }
            /*************************************[抓记录]*************************************/
            if(totalRecords==0){
                queryResult.records = new ArrayList();
            }else{
                Query query = em.createQuery(queryJpql)
                        .setFirstResult((pager.pageNum-1)*queryResult.pageSize)
                        .setMaxResults(queryResult.pageSize);
                //
                Iterator<String> it = parameterNameValuePairs.keySet().iterator();
                while(it.hasNext()){
                    String parameterName = it.next();
                    Object parameterValue = parameterNameValuePairs.get(parameterName);
                    query.setParameter(parameterName, parameterValue);
                }

                queryResult.records = query.getResultList();
            }
        }catch(Exception e){
            queryResult.records = new ArrayList();
        }

        return queryResult;
    }

    public static final String getWhereJpql(XPager pager, HashMap<String,Object> parameterNameValuePairs){
        //1. 判定参数是否合法******************************************
        if(pager.conditionList==null){
            log.debug("pager.conditionList is null");
            return "";
        }
        if(pager.wherePattern==null){
            throw new RuntimeException("pager.wherePattern should NOT be null if pager.conditionList is NOT null.");//return "";
        }
        if(pager.wherePattern.indexOf("?")<0){
            //log.debug("pager.wherePattern 不含条件占位符'?'");
            throw new RuntimeException("pager.wherePattern contains no '?'.");//return "";
        }

        int criteriaFlagNum = 0;
        String tmp = pager.wherePattern;
        while(tmp.indexOf('?')>=0){//该while()仅仅用于计算criteriaFlagNum.
            criteriaFlagNum++;
            tmp = tmp.replaceFirst("\\?", "");
        }
        if(criteriaFlagNum!=pager.conditionList.size()){
            String msg = "criteriaFlagNum is "+criteriaFlagNum+" and pager.conditionList.size() is "+pager.conditionList.size()+". They are NOT equal!";
            log.warn(msg);
            System.out.println(msg);
            return "";
        }

        //2. 正式构造*************************************************
        String wherePattern = pager.wherePattern;
        Iterator<ICriteria> it = pager.conditionList.iterator();
        while(it.hasNext()){
            ICriteria criteria = it.next();
            if(criteria instanceof XTwoParametersCondition){
                XTwoParametersCondition c= (XTwoParametersCondition)criteria;
                String attributeNameFlag = "_"+c.attributeName.replaceAll("\\.","_");//Example: c.attributeName="user.id"
                //
                String s = " obj."+c.attributeName+" "+c.compareOperator.jpqlSymbol+" :"+attributeNameFlag;
                wherePattern = wherePattern.replaceFirst("\\?", s);
                parameterNameValuePairs.put(attributeNameFlag, c.value);
            }
        }
        return wherePattern;
    }

public static final String getOrderbyJpql(XPager pager){

if(pager.orderby==null||pager.orderby.size()==0){

return "";

}

StringBuilder sb = new StringBuilder();

Iterator<XOrder> it = pager.orderby.iterator();

while(it.hasNext()){

XOrder order = it.next();

sb.append(" obj.").append(order.attributeName).append(" ").append(order.asc?"ASC":"DESC").append(",");

}

String s = sb.toString();

int lastCommaIndex = s.lastIndexOf(",");

return s.substring(0,lastCommaIndex);

}

public static void main(String args[]){

testWhere();

System.out.println("\n\n");

testOrderBy();

}

@SuppressWarnings("serial")

public static void testWhere(){

XPager pager = new XPager();

pager.wherePattern = " (? AND ?) OR (? AND ?) ";

List<ICriteria> lst = new ArrayList<ICriteria>(){

{

add(new XTwoParametersCondition("attribute1",XCompareOperator.eq,"xiang"));

add(new XTwoParametersCondition("attribute2",XCompareOperator.eq,"yingbing"));

add(new XTwoParametersCondition("age",XCompareOperator.ge,30));

add(new XTwoParametersCondition("weight",XCompareOperator.lt,150));

//add(new XTwoParametersCondition("MORE",XCompareOperator.lt,150));//

}

};

pager.conditionList = lst;

System.out.println(getWhereJpql(pager,new HashMap<String,Object>()));

}

@SuppressWarnings("serial")

public static void testOrderBy(){

XPager pager = new XPager();

pager.wherePattern = " (? AND ?) OR (? AND ?) ";

List<XOrder> lst = new ArrayList<XOrder>(){

{

add(new XOrder("name1",true));

add(new XOrder("name2",false));

}

};

pager.orderby = lst;

System.out.println(getOrderbyJpql(pager));

}

1.8 EJB Session 使用该EJB查询框架示例

我们以查询文章主题(Topic) 为例。

(a) 接口

import java.util.List;

import com.ybxiang.forum.ejb.entity.Post;
import com.ybxiang.forum.ejb.entity.Topic;
import com.ybxiang.forum.query.QueryResult;
import com.ybxiang.forum.query.XPager;

public interface ITopicSession {
public QueryResult pageTopic(XPager pager);
}

(b) 实现

package com.ybxiang.forum.ejb.session;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.annotation.security.PermitAll;
import javax.ejb.EJB;
import javax.ejb.EJBContext;
import javax.ejb.Local;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import com.ybxiang.forum.ejb.entity.Topic;
import com.ybxiang.forum.query.PagerHelper;
import com.ybxiang.forum.query.QueryResult;
import com.ybxiang.forum.query.XPager;

@Stateless
@Local(ITopicSession.class)
public class TopicSession implements ITopicSession{
    @PersistenceContext()
    private EntityManager em;

    @PermitAll()
    public QueryResult pageTopic(XPager pager){
        return PagerHelper.getResult(Topic.class,em, pager);
    }
}

EJB这一层，就这些代码，我的设计是不是很简单呢？

2. JSF MBean查询框架

现在，我们来描述，如何在JSF MBean中使用我们的EJB查询框架。

2.1 JSF MBean翻页框架

我们定义了一个JSF MBean翻页框架，供所有的翻页JSF MBean扩展使用。

package com.ybxiang.forum.jsfmbean;

import java.util.List;

import com.ybxiang.forum.query.QueryResult;

import com.ybxiang.forum.query.XPager;

public abstract class AbstractPagerMBean {

protected QueryResult queryResult = null;

/**

* 不对JSF网开放！

protected abstract void paging();

/**

* 查询页面读取page信息：

* (a) 点击“翻页链接”翻页时，从【网页地址参数】中提取page参数。不从html form中提取！

* (b) 点击“查询按钮”时，从html form中提取page参数。

public final int getPage(){

Integer page =ParameterHelper.getInteger(ParameterHelper.URL_PARAMETER_NAME_PAGE_NUM);

if(page==null){

return XPager.PAGENUM_START;

}

if(page<XPager.PAGENUM_START){

return XPager.PAGENUM_START;

}

return page;

}

/**

* 供查询页面set:<h:inputHidden id="page" value="#{topicGroupingPagerMBean.page}" />

public void setPage(int page){

//什么都不做

}

@SuppressWarnings("rawtypes")

public final List getPagedRecords(){

//synchronized(queryResult) //防止并发执行query()多次！不行！

{

if(queryResult==null){paging();}

return queryResult.records;

}

public final int getTotalRecords(){

//synchronized(queryResult) //防止并发执行query()多次！不行！

{

if(queryResult==null){paging();}

return queryResult.totalRecords;

}

public final int getTotalPages(){

//synchronized(queryResult) //防止并发执行query()多次！不行！

{

if(queryResult==null){paging();}

return queryResult.totalPages;

}

2.2 JSF MBean查询举例

我们以查询文章主题(Topic) 为例。

package com.ybxiang.forum.jsfmbean.topic;

import java.util.ArrayList;

import java.util.List;

import java.util.logging.Logger;

import com.ybxiang.forum.ejb.entity.Menu;

import com.ybxiang.forum.ejb.session.IMenuSession;

import com.ybxiang.forum.ejb.session.ITopicSession;

import com.ybxiang.forum.jsfmbean.AbstractPagerMBean;

import com.ybxiang.forum.jsfmbean.JSFHelper;

import com.ybxiang.forum.jsfmbean.KeywordsHelper;

import com.ybxiang.forum.jsfmbean.ParameterHelper;

import com.ybxiang.forum.query.ICriteria;

import com.ybxiang.forum.query.QueryResult;

import com.ybxiang.forum.query.XCompareOperator;

import com.ybxiang.forum.query.XOrder;

import com.ybxiang.forum.query.XPager;

import com.ybxiang.forum.query.XTwoParametersCondition;

import javax.ejb.EJB;

import javax.faces.bean.ManagedBean;

import javax.faces.bean.RequestScoped;

import org.jfree.util.Log;

@ManagedBean

@RequestScoped

public class TopicGroupingPagerMBean extends AbstractPagerMBean{

static final Logger logger = Logger.getLogger(TopicGroupingPagerMBean.class.getName());

@EJB

private IMenuSession menuSession;

@EJB

private ITopicSession topicSession;

//*****************************************[地址参数]*****************************************//

/**

* public: list.xhtml需要取用

public Long getMid(){

return ParameterHelper.getLong(ParameterHelper.URL_PARAMETER_NAME_MENU_ID);

}

/**

* 供search时，JSF page set！

public void setMid(Long mid){

//什么都不做

}

/**

* 查询页面读取keywords信息：

* (a) 点击“翻页链接”翻页时，从【网页地址参数】中提取keywords参数。不从html form中提取！

* (b) 点击“查询按钮”时，从html form中提取keywords参数。

public final String getKeywords(){

String keywords = ParameterHelper.getString(ParameterHelper.URL_PARAMETER_NAME_KEYWORDS);

if(keywords==null || keywords.trim().length()==0){

return "";

}

try{

keywords = java.net.URLDecoder.decode(keywords, ParameterHelper.ENCODING);

}catch(Exception e){

Log.error(e);

}

return keywords;

}

/**

* 供查询页面set:<h:inputHidden id="keywords" value="#{topicGroupingPagerMBean.keywords}" />

public void setKeywords(String keywords){

//什么都不做

}

//*****************************************[翻页实现]*****************************************//

/**

* 不对JSF网页开放！

@SuppressWarnings("serial")

protected void paging(){

logger.fine("querying...");

if(queryResult!=null){return;}

queryResult = new QueryResult();//作用：下面各种检测不通过时返回空结果集！

//获取必要参数***************************************

final Long menuId = getMid();

//参数有效性判定*************************************

if(menuId<1){

return;

}

//菜单是否对外开放******************

Menu menu = menuSession.getMenu(menuId);

if(!menu.isOpen()){//本栏目未开放

logger.warning("该菜单["+menuId+"]未开放，只允许管理员查看！");

if( ! JSFHelper.isCurrentUserAdministrator()){

//logger.warning("该菜单["+menuId+"]未开放；现在查看该菜单的不是管理员，有人试图窃取本菜单下信息！");

return;

}

if(menu.isJaasRoleControlled()){//需要该菜单对应的JAAS Role才能访问

if(! JSFHelper.isMenuOpenedToCurrentUser(menu)){

return;

}

//待查询的关键字

//SearchCriteriaMBean searchMBean = (SearchCriteriaMBean) JSFHelper.readFromSession(SearchCriteriaMBean.NAME);

//String keywords = searchMBean==null?null:searchMBean.getKeywords4Topic();

String keywords = getKeywords();

//构造翻页器*****************************************

XPager pager = new XPager();

pager.pageNum = getPage();

pager.orderby = new ArrayList<XOrder>(){

{

add(new XOrder("sortWeight",false));

}

};

        if(keywords==null || keywords.trim().length()==0){
            pager.wherePattern = "(?)";
            List<ICriteria> lst = new ArrayList<ICriteria>(){
                {
                    add(new XTwoParametersCondition("menuId",XCompareOperator.eq,menuId));
                }
            };
            pager.conditionList = lst;
        }else{
            final String sqlQueryString = KeywordsHelper.buildSqlQueryString(keywords);
            pager.wherePattern = "(?) and (?)";
            List<ICriteria> lst = new ArrayList<ICriteria>(){
                {
                    add(new XTwoParametersCondition("menuId",XCompareOperator.eq,menuId));
                    add(new XTwoParametersCondition("title",XCompareOperator.like,sqlQueryString));
                }
            };
            pager.conditionList = lst;
        }
        //查询***********************************************
        queryResult = topicSession.pageTopic(pager);

}

//*****************************************[界面动作]*****************************************//

//一律转化为URL参数传进来，否则提交参数然后翻页会导致多次查询DB。

}

3. JSF页面分页显示查询结果框架

3.1 翻页组件 - pager.xhml

该翻页组件花费了我很多心血啊！

<?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">

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">

    
    <h:panelGroup layout="block" style="text-align: right; margin-bottom:10px;">

        <h:outputLink disabled="#{page eq 1}" styleClass="marginHor10px"
                      value="#{fromWebPath}?#{sharedParameterValuePairs}&page=#{1}"><img src="#{request.contextPath}/img/arrow_begin.gif" class="img-nav"/>
        </h:outputLink>
        <h:outputLink disabled="#{page eq 1}" styleClass="marginHor10px"
                      value="#{fromWebPath}?#{sharedParameterValuePairs}&page=#{page-1}"><img src="#{request.contextPath}/img/arrow_back.gif" class="img-nav"/>
        </h:outputLink>
        <h:inputText class="marginLeft10px" maxlength="5" size="2" value="#{page}" onkeydown="if(event.keyCode==13) {var fixedValue=this.value>#{totalPages}?#{totalPages}:this.value;window.location='#{fromWebPath}?#{sharedParameterValuePairs}&page='+fixedValue; doane(event);}"/>
        <h:outputLink disabled="#{page eq totalPages}" styleClass="marginHor10px"
                      value="#{fromWebPath}?#{sharedParameterValuePairs}&page=#{page+1}"><img src="#{request.contextPath}/img/arrow_forward.gif" class="img-nav"/>
        </h:outputLink>
        <h:outputLink disabled="#{page eq totalPages}" styleClass="marginHor10px"
                      value="#{fromWebPath}?#{sharedParameterValuePairs}&page=#{totalPages}"><img src="#{request.contextPath}/img/arrow_end.gif" class="img-nav"/>
        </h:outputLink>
        <h:outputFormat styleClass="marginHor10px" value="#{messages['ybxiang.javaarm.pager.total.records']}" >
            <f:param value="#{totalRecords}" />
        </h:outputFormat>
        <h:outputText value=" " />
        <h:outputFormat styleClass="marginHor10px" value="#{messages['ybxiang.javaarm.pager.total.pages']}" >
            <f:param value="#{totalPages}" />
        </h:outputFormat>
    </h:panelGroup>

</ui:composition>

3.2 显示查询记录组件 - displayer_topicList.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">

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
                xmlns:ui="http://java.sun.com/jsf/facelets"
                xmlns:f="http://java.sun.com/jsf/core"
                xmlns:h="http://java.sun.com/jsf/html">

    <h:dataTable style="font-size: 14px;" width="100%"
                 value="#{topicList}" var="topicItem"
                 rowClasses="table_odd_row,table_even_row" >
        <h:column headerClass="topicList_Title" >
            <f:facet name="header">
                <h:outputText value="#{messages['ybxiang.javaarm.topic.title']}"/>
            </f:facet>
            <h:outputLink target="_blank"
                          rendered="#{topicItem.separator}"
                          disabled="#{not facesContextMBean.isCurrentUserAdministrator()}"
                          value="#{request.contextPath}/faces/display.xhtml">
                <h:outputText value="♠♠♠♠♠♠"
                              title="#{topicItem.title}:#{topicItem.sortWeight}" />
                <f:param name="tid" value="#{topicItem.id}" />
            </h:outputLink>
            <h:outputLink target="_blank"
                          styleClass="linelessLink"
                          rendered="#{!topicItem.separator}"
                          value="#{request.contextPath}/faces/display.xhtml">
                <h:outputText value="#{topicItem.title}"
                              title="#{topicItem.sortWeight}" />
                <h:graphicImage rendered="#{topicItem.excellent}" value="#{request.contextPath}/img/star.png" width="15" height="15" style="border:0px;" />
                <f:param name="tid" value="#{topicItem.id}" />
            </h:outputLink>
        </h:column>
        <h:column headerClass="topicList_Author" >
            <f:facet name="header">
                <h:outputText value="#{messages['ybxiang.javaarm.author']}"/>
            </f:facet>
            <h:outputText rendered="#{topicItem.separator}" value="♠" />
            <h:outputLink rendered="#{!topicItem.separator}" value="#{request.contextPath}/faces/user.xhtml?uid=#{topicItem.authorId}" target="_blank">
                <h:outputText value="#{userCachingMBean.getUserByIdFromCache(topicItem.authorId).username}" />
            </h:outputLink>
        </h:column>
        <h:column headerClass="topicList_Statistics" >
            <f:facet name="header">
                <h:outputText value="#{messages['ybxiang.javaarm.hitsOfReply']}"/>
            </f:facet>
            <h:outputText rendered="#{topicItem.separator}" value="♠" />
            <h:outputText rendered="#{!topicItem.separator}" value="#{topicItem.hitsOfReply}" />
        </h:column>
    </h:dataTable>

</ui:composition>

3.3 查询结果显示页面举例 - list.xhtml

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<ui:composition xmlns="http://www.w3.org/1999/xhtml"

xmlns:ui="http://java.sun.com/jsf/facelets"

xmlns:f="http://java.sun.com/jsf/core"

xmlns:h="http://java.sun.com/jsf/html"

template="/template/template.xhtml">

<ui:define name="title">

<h:outputText value="#{menuCachingMBean.getMenu(topicGroupingPagerMBean.mid).getDomain().getName()} > #{menuCachingMBean.getMenu(topicGroupingPagerMBean.mid).getName()}" />

</ui:define>

<ui:define name="headMetaData">

<link rel="stylesheet" type="text/css" media="all" href="#{request.contextPath}/css/dataTable_topic.css" />

</ui:define>

<ui:define name="body">

<h:panelGroup layout="block" rendered="true">

<h:form id="form">

<h:inputHidden id="mid" value="#{topicGroupingPagerMBean.mid}" />
<h:inputHidden id="page" value="#{topicGroupingPagerMBean.page}" />

<h:outputText value=" " />

<h:inputText id="keywords" value="#{topicGroupingPagerMBean.keywords}" />

<ui:include src="/template/pager.xhtml" >

<ui:param name="sharedParameterValuePairs" value="mid=#{topicGroupingPagerMBean.mid}&keywords=#{topicGroupingPagerMBean.keywords}" />

<ui:param name="fromWebPath" value="#{request.contextPath}/faces/list.xhtml" />

<ui:param name="page" value="#{topicGroupingPagerMBean.page}" />

<ui:param name="totalRecords" value="#{topicGroupingPagerMBean.totalRecords}" />

<ui:param name="totalPages" value="#{topicGroupingPagerMBean.totalPages}" />

</ui:include>

<ui:include src="/template/displayer_topicList.xhtml" >

<ui:param name="topicList" value="#{topicGroupingPagerMBean.getPagedRecords()}" />

</ui:include>

<ui:include src="/template/pager.xhtml" >

<ui:param name="sharedParameterValuePairs" value="mid=#{topicGroupingPagerMBean.mid}&keywords=#{topicGroupingPagerMBean.keywords}" />

<ui:param name="fromWebPath" value="#{request.contextPath}/faces/list.xhtml" />

<ui:param name="page" value="#{topicGroupingPagerMBean.page}" />

<ui:param name="totalRecords" value="#{topicGroupingPagerMBean.totalRecords}" />

<ui:param name="totalPages" value="#{topicGroupingPagerMBean.totalPages}" />

</ui:include>

</h:form>

</h:panelGroup>

</ui:define>

</ui:composition>

JBossDeveloper

开发基于JBoss AS 7.2.0的Java EE程序 - 07.翻页

概述

1. EJB 分页查询框架

1.1 ICriteria.java

1.2 XTwoParametersCondition.java

1.3 XCompareOperator.java

1.4 XOrder.java

1.5 XPager.java

1.6 QueryResult.java

1.7 PagerHelper.java

1.8 EJB Session 使用该EJB查询框架示例

2. JSF MBean查询框架

2.1 JSF MBean翻页框架

2.2 JSF MBean查询举例

3. JSF页面分页显示查询结果框架

3.1 翻页组件 - pager.xhml

3.2 显示查询记录组件 - displayer_topicList.xhtml

3.3 查询结果显示页面举例 - list.xhtml

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