试着用zk结合hibernaet实现分页查询

Zk是一个direct RIA框架。它借用了xul来描述界面，在xul的基础上做了一些扩展,改了一个名字叫zul，不使用

javascript也能做出类似extjs那样的界面来。我一开始觉得只是把javascript替换成xml意义不是太大，因为没有哪个美工

会用zul来做界面，说到底最终界面还是要靠程序员来做的，但是换个角度用 extjs那样的方式来不可以避免把很多逻辑带

入到界面中来，这点zk的zul就要好些，正如zk宣传的那样，不需要java,javascript也能做出RIA的界面来。Zk的另一个好

处就是把ajax前后台通讯部分也用事件的方式封装起来了，这比用extjs好多了，不用自己再搞一套了前后台机制了。
    看完《ZK开发手册》，也跟着做了Zk是一个direct RIA框架。它借用了xul来描述界面，在xul的基础上做了一些扩展,改了一个名字叫zul，不使用

javascript也能做出类似extjs那样的界面来。我一开始觉得只是把javascript替换成xml意义不是太大，因为没有哪个美工

会用zul来做界面，说到底最终界面还是要靠程序员来做的，但是换个角度用 extjs那样的方式来不可以避免把很多逻辑带

入到界面中来，这点zk的zul就要好些，正如zk宣传的那样，不需要java,javascript也能做出RIA的界面来。Zk的另一个好

处就是把ajax前后台通讯部分也用事件的方式封装起来了，这比用extjs好多了，不用自己再搞一套了前后台机制了。
    看完《ZK开发手册》，也跟着做了一些例子，测试了一下与spring、hibernate集成都没有问题。于是，开始尝试用zk

的listbox来做一个结合spring+hibernate的分页数据显示。刚一动手就遇到了麻烦，zul在控件中显示数据的方式主要有三

种：
      1、用EL表达式作为zul标签的属性；
      2、为zul控件指定model；
      3、通过注释进行数据绑定；
为了在数据库查询的时候实现分页，无法使用第1种方式，这种方式listbox是对forEach属性EL表达式中的list进行迭代来

创建 listitem，有多少数据就创建多少个listitem，只有数据条数大于每页显示的数据条数并且listbox的

mold=“paging”时才能分页，而数据库查询每页需要显示多少数据才从数据库中取多少数据，显然第1种方式无法使用。本

来第2种方式是java开发人员最熟悉的方式，几乎和swing一样，但是这种方式需要写一个org.zkoss.zul.ListitemRenderer

的实现类，在这个类里用java代码的方式定义每行的显示样式，这样混用zul和java的来定制界面不是理想的方式。
    那现在只剩下第3种方式，这种方式是现在最为流行注释方式，就是对zul的标记用进行注释来把数据绑定到zul控件

上，这里的注释不是通用的xml注释<!-- ... -->而是一些特殊的zul标记和@开头的特殊属性例如model="@{userList}"表示

用@{userList}对model这个属性进行了注释（这个地方有点奇怪）。用注释绑定数据的代码如下：

<listbox id="userListBox" mold="paging" model="@{userList}"
                selectedItem="@{selectedUser}">
        <listhead>
            <listheader label="登陆名" sort="auto" />
            <listheader label="中文名" sort="auto" />
        </listhead>

        <listitem self="@{each=user}">
            <listcell label="@{user.loginname}" />
            <listcell label="@{user.truename}" />
        </listitem>
</listbox>

<listbox id="userListBox" mold="paging" model="@{userList}"
				selectedItem="@{selectedUser}">
		<listhead>
			<listheader label="登陆名" sort="auto" />
			<listheader label="中文名" sort="auto" />
		</listhead>

		<listitem self="@{each=user}">
			<listcell label="@{user.loginname}" />
			<listcell label="@{user.truename}" />
		</listitem>
</listbox>

 用注释方式的数据绑定与直接用EL设置listbox的model属性对listbox来说都是把一个实现了org.zkoss.zul.ListModel

接口的对象赋值给listbox的model属性，唯一的区别就是注释方式还可以给listitem、listcell绑定数据，也就是说数据绑

定可以迭代 model并把每个model中的每个元素都与对应的listcell进行数据绑定，对应使用EL设置model的方式来说做同

样的事情还需要实现org.zkoss.zul.ListitemRenderer接口 。

    把数据和listbos绑定在一起只是第1步，接下要用hibernate实现对数据库进行分页查询了。
    要想分页查询最初的想法是监听listbox的 onPage之类的事件来实现分页，但是很遗憾我没有试验成功，哪位tx搞出来

给我留个言分享一下。注释数据绑定可以自动地把一个 java.util.List构造成ListModel的实现类，上面代码中的userList

就是一个java.util.List，实现分页查询的第二条思路就是从list下手，自己写一个能够使用hibernate实现分页的list，我

正是这样做的。
    当然不是从头开始写一个list的实现类而是采用Proxy模式把通过Hibernate查询出来的list对象包裹一下，首先需要通

过hibernate查询出一个list来作为被代理的对象，这个list保存了本页要显示的数据，如果每页显示20条数据，那么这个

list的长度就是20，接着需要当前页最后一条记录序号保存起来，最后重写get方法，根据最后记录序号、每页显示条数判

断是否需要分页以及是向前翻页还是向后翻页。get方法的代码如下：

@Override
public Object get(int index) {
        if(index>=last||index<=last-limit*2){
            this.fullData(index, limit);
            index = 0;
            if(list.size()==0)
                return null;
            else
                return list.get(index);
        }else{
            index = index-(last-limit);
            if(list.size()==0)
                return null;
            else
                return list.get(index);
        }
}

@Override
public Object get(int index) {
       	if(index>=last||index<=last-limit*2){
        	this.fullData(index, limit);
        	index = 0;
        	if(list.size()==0)
        		return null;
        	else
        	    return list.get(index);
        }else{
        	index = index-(last-limit);
        	if(list.size()==0)
        		return null;
        	else
        	    return list.get(index);
        }
}

 其中list就是被代理的对象，last就是最后一条记录的序号，limit是每页显示的记录数,fullData是具体执行分页查询的方

法。调用get时传入记录下标index如果大于等于最后一条记录的序号（记录序号是从1开始计数的）那么就向后翻页，如果

index小于等于上一页起始记录序号，那么需要向后翻页，不管是向后翻页还是向前翻页都需要重新查询从index到

index+limit的记录。数据实际上是放在被代理的list中的，要从被代理的list取出数据，那么下标始终是从0开始，所以需

要把这里传入的index转化成0开始的相对下标，下面就是进行转化的代码

index=index-(last-limit);

index=index-(last-limit);

如果仅仅是对全表数据进行分页显示，这样做完全没有问题，但实际工作往往是需要对数据进行过滤的，也就是说这个分页

的list需要能够保证分页的时候能够执行带过滤条件的分页查询，所以这个分页list中用list来保存hibernate的Criterion对

象，在fullData新建一个criteria把这些Criterion都加进去。下面是fullData的代码：

public void fullData(int start, int limit) {
    this.last = start + limit;
    this.limit = limit;
    list = new ArrayList(limit);
    SessionFactory sf = (SessionFactory) SpringUtil
            .getBean("sessionFactory");
    Session session = sf.openSession();
    Criteria criteria = session.createCriteria(clazz);
    for (Criterion crierion : listCriteria) {
        criteria.add(crierion);
    }
    criteria.setFirstResult(start);


    criteria.setMaxResults(start + limit);
    List result = criteria.list();
    if (result != null) {
        Iterator iterator = result.iterator();
        while (iterator.hasNext()) {
            list.add(iterator.next());
        }
    }

    session.close();
}

	public void fullData(int start, int limit) {
		this.last = start + limit;
		this.limit = limit;
		list = new ArrayList(limit);
		SessionFactory sf = (SessionFactory) SpringUtil
				.getBean("sessionFactory");
		Session session = sf.openSession();
		Criteria criteria = session.createCriteria(clazz);
		for (Criterion crierion : listCriteria) {
			criteria.add(crierion);
		}
		criteria.setFirstResult(start);


		criteria.setMaxResults(start + limit);
		List result = criteria.list();
		if (result != null) {
			Iterator iterator = result.iterator();
			while (iterator.hasNext()) {
				list.add(iterator.next());
			}
		}

		session.close();
	}

 fullData还有一个重要的作用就是初始化被代理的list，这段代码都是hibernate的操作。
      下面就把完整的代码贴出来，实体类就不贴附件里有代码。

   1、memberList.zul

<?xml version="1.0" encoding="UTF-8"?>
<?variable-resolver class="org.zkoss.zkplus.spring.DelegatingVariableResolver"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit" arg0="./demo"?>
<window id="demo">

    <zscript language="javascript" src="memberList.js">
    </zscript>
    <groupbox id="main" mold="3d" width="100%">
        <caption label="View">
            <button label="新 增" height="18px"
                onClick="newUserWin.doModal();" />
            <button label="查 询" height="18px"
                onClick="queryUserWin.doModal();" />
            <button label="修 改" height="18px"
                onClick="updateUserWin.doModal();" />
        </caption>
        <window id="userWin">
            <listbox id="userListBox" mold="paging"
                model="@{memberList}" selectedItem="@{selectedMember}">
                <listhead>
                    <listheader label="登陆名" sort="auto" />
                    <listheader label="中文名" sort="auto" />
                    <listheader label="注册日期" sort="auto" />
                </listhead>

                <listitem self="@{each=member}">
                    <listcell label="@{member.loginname}" />
                    <listcell label="@{member.truename}" />
                    <listcell label="@{member.registDate}" />
                </listitem>
            </listbox>
        </window>
    </groupbox>

    <window id="newUserWin" visible="false" width="480px">
        <groupbox mold="3d" width="100%">
            <caption label="新增用户"></caption>
            <grid>
                <rows>
                    <row>
                        <label value="帐 号" />
                        <textbox id="user_loginname"
                            value="@{member.loginname}" constraint="/.{2,4}/:长度在2,4之间" />
                    </row>
                    <row>
                        <label value="用户名" />
                        <textbox id="user_truename"
                            value="@{member.truename}" />
                    </row>
                    <row>
                        <label value="密 码" />
                        <textbox id="user_password"
                            value="@{member.password}" />
                    </row>
                </rows>
            </grid>
            <separator />
            <hbox spacing="10px">
                <space bar="false" spacing="10px" />
                <button label="确 定" onClick="save()" />
                <button label="取 消"
                    onClick="newUserWin.setVisible(false);" />
            </hbox>
        </groupbox>
    </window>
    <window id="queryUserWin" visible="false" width="480px">
        <groupbox mold="3d" width="100%">
            <caption label="查询用户"></caption>
            <grid>
                <rows>
                    <row>
                        <label value="帐 号" />
                        <textbox id="query_loginname" />
                    </row>
                    <row>
                        <label value="用户名" />
                        <textbox id="query_truename" />
                    </row>
                </rows>
            </grid>
            <separator />
            <hbox spacing="10px">
                <space bar="false" spacing="10px" />
                <button label="查 询" onClick="javascript:query();" />
                <button label="取 消"
                    onClick="queryUserWin.setVisible(false);" />
            </hbox>
        </groupbox>
    </window>
    <window id="updateUserWin" visible="false" width="480px">
        <groupbox mold="3d" width="100%">
            <caption label="修改用户"></caption>
            <grid>
                <rows>
                    <row>
                        <label value="帐 号" />
                        <textbox value="@{selectedUser.loginname}" />
                    </row>
                    <row>
                        <label value="用户名" />
                        <textbox value="@{selectedUser.truename}" />
                    </row>
                    <row>
                        <label value="密 码" />
                        <textbox value="@{selectedUser.password}" />
                    </row>

                </rows>
            </grid>
            <separator />
            <hbox spacing="10px">
                <space bar="false" spacing="10px" />
                <button label="确 定" onClick="javascript:update();" />
                <button label="取  消"
                    onClick="updateUserWin.setVisible(false);" />
            </hbox>
        </groupbox>
    </window>
</window>

<?xml version="1.0" encoding="UTF-8"?>
<?variable-resolver class="org.zkoss.zkplus.spring.DelegatingVariableResolver"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit" arg0="./demo"?>
<window id="demo">
	
	<zscript language="javascript" src="memberList.js">
	</zscript>
	<groupbox id="main" mold="3d" width="100%">
		<caption label="View">
			<button label="新 增" height="18px"
				onClick="newUserWin.doModal();" />
			<button label="查 询" height="18px"
				onClick="queryUserWin.doModal();" />
			<button label="修 改" height="18px"
				onClick="updateUserWin.doModal();" />
		</caption>
		<window id="userWin">
			<listbox id="userListBox" mold="paging"
				model="@{memberList}" selectedItem="@{selectedMember}">
				<listhead>
					<listheader label="登陆名" sort="auto" />
					<listheader label="中文名" sort="auto" />
					<listheader label="注册日期" sort="auto" />
				</listhead>

				<listitem self="@{each=member}">
					<listcell label="@{member.loginname}" />
					<listcell label="@{member.truename}" />
					<listcell label="@{member.registDate}" />
				</listitem>
			</listbox>
		</window>
	</groupbox>

	<window id="newUserWin" visible="false" width="480px">
		<groupbox mold="3d" width="100%">
			<caption label="新增用户"></caption>
			<grid>
				<rows>
					<row>
						<label value="帐 号" />
						<textbox id="user_loginname"
							value="@{member.loginname}" constraint="/.{2,4}/:长度在2,4之间" />
					</row>
					<row>
						<label value="用户名" />
						<textbox id="user_truename"
							value="@{member.truename}" />
					</row>
					<row>
						<label value="密 码" />
						<textbox id="user_password"
							value="@{member.password}" />
					</row>
				</rows>
			</grid>
			<separator />
			<hbox spacing="10px">
				<space bar="false" spacing="10px" />
				<button label="确 定" onClick="save()" />
				<button label="取 消"
					onClick="newUserWin.setVisible(false);" />
			</hbox>
		</groupbox>
	</window>
	<window id="queryUserWin" visible="false" width="480px">
		<groupbox mold="3d" width="100%">
			<caption label="查询用户"></caption>
			<grid>
				<rows>
					<row>
						<label value="帐 号" />
						<textbox id="query_loginname" />
					</row>
					<row>
						<label value="用户名" />
						<textbox id="query_truename" />
					</row>
				</rows>
			</grid>
			<separator />
			<hbox spacing="10px">
				<space bar="false" spacing="10px" />
				<button label="查 询" onClick="javascript:query();" />
				<button label="取 消"
					onClick="queryUserWin.setVisible(false);" />
			</hbox>
		</groupbox>
	</window>
	<window id="updateUserWin" visible="false" width="480px">
		<groupbox mold="3d" width="100%">
			<caption label="修改用户"></caption>
			<grid>
				<rows>
					<row>
						<label value="帐 号" />
						<textbox value="@{selectedUser.loginname}" />
					</row>
					<row>
						<label value="用户名" />
						<textbox value="@{selectedUser.truename}" />
					</row>
					<row>
						<label value="密 码" />
						<textbox value="@{selectedUser.password}" />
					</row>

				</rows>
			</grid>
			<separator />
			<hbox spacing="10px">
				<space bar="false" spacing="10px" />
				<button label="确 定" onClick="javascript:update();" />
				<button label="取  消"
					onClick="updateUserWin.setVisible(false);" />
			</hbox>
		</groupbox>
	</window>
</window>

 注意zul文件开头处理指令variable-resolver指定了org.zkoss.zkplus.spring.DelegatingVariableResolver来处理

EL中的变量，使用这个类可以在EL中直接使用spring定义的bean id，例如

      <variables mService="${memberService}" />

就是引用spring ApplictionContext中id为memberService的bean来定义名为mService的变量。init指令初始化了

org.zkoss.zkplus.databind.AnnotateDataBinderInit，这个类用来就是用来实现数据绑定的，至于是怎么实现的我

也不太清楚，只知道初始化后就可以使用数据绑定了。

   2、memberList.js

var member  = new com.liyuan.spore.entity.Member();
var memberList = memberService.queryAllUser();
var selectedMember = memberList.get(0);
function save(){
  if(memberService.userIsExist(member.loginname)){
     memberService.saveNewUser(member);
     newUserWin.setVisible(false);
  }else
     throw new WrongValueException(user_loginname, "账号已存在！");
}
function query(){
  var loginname=queryUserWin.getFellow("query_loginname").value;
  var truename=queryUserWin.getFellow("query_truename").value;
  var queryUser  = new com.liyuan.spore.entity.Member();
  if(!"".equals(loginname))
     queryUser.setLoginname("%"+loginname+"%");
  if(!"".equals(truename))
     queryUser.setTruename("%"+truename+"%");
  ulist = main.getFellow("userWin").getFellow("userListBox");
  newList = new org.zkoss.zkplus.databind.BindingListModelList(memberService.query(queryUser),true);
  ulist.setModel(newList);
  selectedMember = newList.getElementAt(0);
  queryUserWin.setVisible(false);
}
function update(){
  memberService.modify(selectedUser);
}

var member  = new com.liyuan.spore.entity.Member();
var memberList = memberService.queryAllUser();
var selectedMember = memberList.get(0);
function save(){
  if(memberService.userIsExist(member.loginname)){
     memberService.saveNewUser(member);
     newUserWin.setVisible(false);
  }else
     throw new WrongValueException(user_loginname, "账号已存在！");
}
function query(){
  var loginname=queryUserWin.getFellow("query_loginname").value;
  var truename=queryUserWin.getFellow("query_truename").value;
  var queryUser  = new com.liyuan.spore.entity.Member();
  if(!"".equals(loginname))
     queryUser.setLoginname("%"+loginname+"%");
  if(!"".equals(truename))
     queryUser.setTruename("%"+truename+"%");
  ulist = main.getFellow("userWin").getFellow("userListBox");
  newList = new org.zkoss.zkplus.databind.BindingListModelList(memberService.query(queryUser),true);        
  ulist.setModel(newList);
  selectedMember = newList.getElementAt(0);
  queryUserWin.setVisible(false);
}
function update(){
  memberService.modify(selectedUser);
}

第2行，调用memberService.queryAllUser()获取一个可以分页的list在memberList.zul中又通过注释的方式把数据绑

定到了listbox上。这里的memberService是直接通过org.zkoss.zkplus.spring.DelegatingVariableResolver引用

的spring ApplicationContext中定义的bean。

   3、MemberService

package com.liyuan.spore.zkdemo;

import java.math.BigDecimal;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.liyuan.spore.entity.Member;

@Service("memberService")
@Scope("request")
public class MemberService {
    private SessionFactory sessionFactory;

    @Autowired
    public void setSessionFactory(@Qualifier("sessionFactory")
    SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public PagingList queryAllUser() {
        Session session = sessionFactory.getCurrentSession();
        Query query = session.createSQLQuery("select count(*) from T_MEMBER");
        BigDecimal size = (BigDecimal) query.uniqueResult();
        PagingList plist = new PagingList(Member.class, size.intValue());
        plist.fullData(0, 20);
        return plist;
    }

    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public boolean userIsExist(String loginname) {
        Session session = sessionFactory.getCurrentSession();
        List list = session.createCriteria(Member.class).add(
                Restrictions.eq("loginname", loginname)).list();
        return list.isEmpty();

    }

    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public void saveNewUser(Member user) {
        Session session = sessionFactory.getCurrentSession();
        session.save(user);
    }

    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public PagingList query(Member user) {
        Session session = sessionFactory.getCurrentSession();

        Example example = Example.create(user);
        example.enableLike();
        example.excludeZeroes();
        example.excludeNone();
        Criteria criteria = session.createCriteria(Member.class);
        criteria.setProjection(Projections.rowCount()).add(example);
        Integer size = (Integer) criteria.uniqueResult();
        PagingList plist = new PagingList(Member.class, size.intValue());
        plist.addCriterion(example);
        plist.fullData(0, 20);
        return plist;

    }

    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public void modify(Member user) {
        Session session = sessionFactory.getCurrentSession();
        session.update(user);
    }
}

package com.liyuan.spore.zkdemo;

import java.math.BigDecimal;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.liyuan.spore.entity.Member;

@Service("memberService")
@Scope("request")
public class MemberService {
	private SessionFactory sessionFactory;

	@Autowired
	public void setSessionFactory(@Qualifier("sessionFactory")
	SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
	public PagingList queryAllUser() {
		Session session = sessionFactory.getCurrentSession();
		Query query = session.createSQLQuery("select count(*) from T_MEMBER");
		BigDecimal size = (BigDecimal) query.uniqueResult();
		PagingList plist = new PagingList(Member.class, size.intValue());
		plist.fullData(0, 20);
		return plist;
	}

	@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
	public boolean userIsExist(String loginname) {
		Session session = sessionFactory.getCurrentSession();
		List list = session.createCriteria(Member.class).add(
				Restrictions.eq("loginname", loginname)).list();
		return list.isEmpty();

	}

	@Transactional(readOnly = false, propagation = Propagation.REQUIRED)
	public void saveNewUser(Member user) {
		Session session = sessionFactory.getCurrentSession();
		session.save(user);
	}

	@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
	public PagingList query(Member user) {
		Session session = sessionFactory.getCurrentSession();

		Example example = Example.create(user);
		example.enableLike();
		example.excludeZeroes();
		example.excludeNone();
		Criteria criteria = session.createCriteria(Member.class);
		criteria.setProjection(Projections.rowCount()).add(example);
		Integer size = (Integer) criteria.uniqueResult();
		PagingList plist = new PagingList(Member.class, size.intValue());
		plist.addCriterion(example);
		plist.fullData(0, 20);
		return plist;

	}

	@Transactional(readOnly = false, propagation = Propagation.REQUIRED)
	public void modify(Member user) {
		Session session = sessionFactory.getCurrentSession();
		session.update(user);
	}
}

这段代码没有什么好解释的。

   4、PagingList.java

package com.liyuan.spore.zkdemo;

import java.util.AbstractList;
import java.util.ArrayList;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Criterion;
import org.zkoss.zkplus.spring.SpringUtil;

public class PagingList extends AbstractList implements java.io.Serializable {

    private int last;
    private int limit;
    private int size;
    private Class clazz;
    private ArrayList list;

    private LinkedList<Criterion> listCriteria;

    public PagingList(Class entityClass, int theSize) {
        size = theSize;
        clazz = entityClass;
        listCriteria = new LinkedList<Criterion>();
        last = 0;
        // fullData(0, 20);
    }

    public void setSize(int size) {
        this.size = size;
    }

    public void addCriterion(Criterion cr) {
        listCriteria.add(cr);
    }

    public void fullData(int start, int limit) {
        this.last = start + limit;
        this.limit = limit;
        list = new ArrayList(limit);
        SessionFactory sf = (SessionFactory) SpringUtil
                .getBean("sessionFactory");
        Session session = sf.openSession();
        Criteria criteria = session.createCriteria(clazz);
        for (Criterion crierion : listCriteria) {
            criteria.add(crierion);
        }
        criteria.setFirstResult(start);
        criteria.setMaxResults(start + limit);
        List result = criteria.list();
        if (result != null) {
            Iterator iterator = result.iterator();
            while (iterator.hasNext()) {
                list.add(iterator.next());
            }
        }

        session.close();
    }

    @Override
    public Object get(int index) {
        if (index >= last || index <= last - limit * 2) {
            this.fullData(index, limit);
            index = 0;
            if (list.size() == 0)
                return null;
            else

                return list.get(index);
        } else {
            index = index - (last - limit);
            if (list.size() == 0)
                return null;
            else
                return list.get(index);
        }
    }

    @Override
    public int size() {

        return size;
    }

    @Override
    public int hashCode() {
        int hashCode = 1;
        Iterator i = list.iterator();
        while (i.hasNext()) {
            Object obj = i.next();
            hashCode = 31 * hashCode + (obj == null ? 0 : obj.hashCode());
        }
        return hashCode;
    }

    @Override
    public int indexOf(Object o) {

        return list.indexOf(o);
    }

    @Override
    public Iterator iterator() {
        // TODO Auto-generated method stub
        return list.iterator();
    }

    @Override
    public ListIterator listIterator() {

        return list.listIterator();
    }

    @Override
    public ListIterator listIterator(int index) {

        return list.listIterator(index);
    }

    @Override
    public Object remove(int index) {

        return list.remove(index);
    }

    @Override
    public Object[] toArray() {
        return list.toArray();
    }

    public void removeCriterions() {
        this.listCriteria.clear();
    }

}

package com.liyuan.spore.zkdemo;

import java.util.AbstractList;
import java.util.ArrayList;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Criterion;
import org.zkoss.zkplus.spring.SpringUtil;

public class PagingList extends AbstractList implements java.io.Serializable {

	private int last;
	private int limit;
	private int size;
	private Class clazz;
	private ArrayList list;

	private LinkedList<Criterion> listCriteria;

	public PagingList(Class entityClass, int theSize) {
		size = theSize;
		clazz = entityClass;
		listCriteria = new LinkedList<Criterion>();
		last = 0;
		// fullData(0, 20);
	}

	public void setSize(int size) {
		this.size = size;
	}

	public void addCriterion(Criterion cr) {
		listCriteria.add(cr);
	}

	public void fullData(int start, int limit) {
		this.last = start + limit;
		this.limit = limit;
		list = new ArrayList(limit);
		SessionFactory sf = (SessionFactory) SpringUtil
				.getBean("sessionFactory");
		Session session = sf.openSession();
		Criteria criteria = session.createCriteria(clazz);
		for (Criterion crierion : listCriteria) {
			criteria.add(crierion);
		}
		criteria.setFirstResult(start);
		criteria.setMaxResults(start + limit);
		List result = criteria.list();
		if (result != null) {
			Iterator iterator = result.iterator();
			while (iterator.hasNext()) {
				list.add(iterator.next());
			}
		}

		session.close();
	}

	@Override
	public Object get(int index) {
		if (index >= last || index <= last - limit * 2) {
			this.fullData(index, limit);
			index = 0;
			if (list.size() == 0)
				return null;
			else

				return list.get(index);
		} else {
			index = index - (last - limit);
			if (list.size() == 0)
				return null;
			else
				return list.get(index);
		}
	}

	@Override
	public int size() {

		return size;
	}

	@Override
	public int hashCode() {
		int hashCode = 1;
		Iterator i = list.iterator();
		while (i.hasNext()) {
			Object obj = i.next();
			hashCode = 31 * hashCode + (obj == null ? 0 : obj.hashCode());
		}
		return hashCode;
	}

	@Override
	public int indexOf(Object o) {

		return list.indexOf(o);
	}

	@Override
	public Iterator iterator() {
		// TODO Auto-generated method stub
		return list.iterator();
	}

	@Override
	public ListIterator listIterator() {

		return list.listIterator();
	}

	@Override
	public ListIterator listIterator(int index) {

		return list.listIterator(index);
	}

	@Override
	public Object remove(int index) {

		return list.remove(index);
	}

	@Override
	public Object[] toArray() {
		return list.toArray();
	}

	public void removeCriterions() {
		this.listCriteria.clear();
	}

}

这段代码就是可以分页的list，和hibernate高度耦合，但是对于单一实体的分页查询是可以重用的。

一些例子，测试了一下与spring、hibernate集成都没有问题。于是，开始尝试用zk

的listbox来做一个结合spring+hibernate的分页数据显示。刚一动手就遇到了麻烦，zul在控件中显示数据的方式主要有三

种：
      1、用EL表达式作为zul标签的属性；
      2、为zul控件指定model；
      3、通过注释进行数据绑定；
为了在数据库查询的时候实现分页，无法使用第1种方式，这种方式listbox是对forEach属性EL表达式中的list进行迭代来

创建 listitem，有多少数据就创建多少个listitem，只有数据条数大于每页显示的数据条数并且listbox的

mold=“paging”时才能分页，而数据库查询每页需要显示多少数据才从数据库中取多少数据，显然第1种方式无法使用。本

来第2种方式是java开发人员最熟悉的方式，几乎和swing一样，但是这种方式需要写一个org.zkoss.zul.ListitemRenderer

的实现类，在这个类里用java代码的方式定义每行的显示样式，这样混用zul和java的来定制界面不是理想的方式。
    那现在只剩下第3种方式，这种方式是现在最为流行注释方式，就是对zul的标记用进行注释来把数据绑定到zul控件

上，这里的注释不是通用的xml注释<!-- ... -->而是一些特殊的zul标记和@开头的特殊属性例如model="@{userList}"表示

用@{userList}对model这个属性进行了注释（这个地方有点奇怪）。用注释绑定数据的代码如下：

<listbox id="userListBox" mold="paging" model="@{userList}"
                selectedItem="@{selectedUser}">
        <listhead>
            <listheader label="登陆名" sort="auto" />
            <listheader label="中文名" sort="auto" />
        </listhead>

        <listitem self="@{each=user}">
            <listcell label="@{user.loginname}" />
            <listcell label="@{user.truename}" />
        </listitem>
</listbox>

<listbox id="userListBox" mold="paging" model="@{userList}"
				selectedItem="@{selectedUser}">
		<listhead>
			<listheader label="登陆名" sort="auto" />
			<listheader label="中文名" sort="auto" />
		</listhead>

		<listitem self="@{each=user}">
			<listcell label="@{user.loginname}" />
			<listcell label="@{user.truename}" />
		</listitem>
</listbox>

 用注释方式的数据绑定与直接用EL设置listbox的model属性对listbox来说都是把一个实现了org.zkoss.zul.ListModel

接口的对象赋值给listbox的model属性，唯一的区别就是注释方式还可以给listitem、listcell绑定数据，也就是说数据绑

定可以迭代 model并把每个model中的每个元素都与对应的listcell进行数据绑定，对应使用EL设置model的方式来说做同

样的事情还需要实现org.zkoss.zul.ListitemRenderer接口 。

    把数据和listbos绑定在一起只是第1步，接下要用hibernate实现对数据库进行分页查询了。
    要想分页查询最初的想法是监听listbox的 onPage之类的事件来实现分页，但是很遗憾我没有试验成功，哪位tx搞出来

给我留个言分享一下。注释数据绑定可以自动地把一个 java.util.List构造成ListModel的实现类，上面代码中的userList

就是一个java.util.List，实现分页查询的第二条思路就是从list下手，自己写一个能够使用hibernate实现分页的list，我

正是这样做的。
    当然不是从头开始写一个list的实现类而是采用Proxy模式把通过Hibernate查询出来的list对象包裹一下，首先需要通

过hibernate查询出一个list来作为被代理的对象，这个list保存了本页要显示的数据，如果每页显示20条数据，那么这个

list的长度就是20，接着需要当前页最后一条记录序号保存起来，最后重写get方法，根据最后记录序号、每页显示条数判

断是否需要分页以及是向前翻页还是向后翻页。get方法的代码如下：

@Override
public Object get(int index) {
        if(index>=last||index<=last-limit*2){
            this.fullData(index, limit);
            index = 0;
            if(list.size()==0)
                return null;
            else
                return list.get(index);
        }else{
            index = index-(last-limit);
            if(list.size()==0)
                return null;
            else
                return list.get(index);
        }
}

@Override
public Object get(int index) {
       	if(index>=last||index<=last-limit*2){
        	this.fullData(index, limit);
        	index = 0;
        	if(list.size()==0)
        		return null;
        	else
        	    return list.get(index);
        }else{
        	index = index-(last-limit);
        	if(list.size()==0)
        		return null;
        	else
        	    return list.get(index);
        }
}

 其中list就是被代理的对象，last就是最后一条记录的序号，limit是每页显示的记录数,fullData是具体执行分页查询的方

法。调用get时传入记录下标index如果大于等于最后一条记录的序号（记录序号是从1开始计数的）那么就向后翻页，如果

index小于等于上一页起始记录序号，那么需要向后翻页，不管是向后翻页还是向前翻页都需要重新查询从index到

index+limit的记录。数据实际上是放在被代理的list中的，要从被代理的list取出数据，那么下标始终是从0开始，所以需

要把这里传入的index转化成0开始的相对下标，下面就是进行转化的代码

index=index-(last-limit);

index=index-(last-limit);

如果仅仅是对全表数据进行分页显示，这样做完全没有问题，但实际工作往往是需要对数据进行过滤的，也就是说这个分页

的list需要能够保证分页的时候能够执行带过滤条件的分页查询，所以这个分页list中用list来保存hibernate的Criterion对

象，在fullData新建一个criteria把这些Criterion都加进去。下面是fullData的代码：

public void fullData(int start, int limit) {
    this.last = start + limit;
    this.limit = limit;
    list = new ArrayList(limit);
    SessionFactory sf = (SessionFactory) SpringUtil
            .getBean("sessionFactory");
    Session session = sf.openSession();
    Criteria criteria = session.createCriteria(clazz);
    for (Criterion crierion : listCriteria) {
        criteria.add(crierion);
    }
    criteria.setFirstResult(start);


    criteria.setMaxResults(start + limit);
    List result = criteria.list();
    if (result != null) {
        Iterator iterator = result.iterator();
        while (iterator.hasNext()) {
            list.add(iterator.next());
        }
    }

    session.close();
}

	public void fullData(int start, int limit) {
		this.last = start + limit;
		this.limit = limit;
		list = new ArrayList(limit);
		SessionFactory sf = (SessionFactory) SpringUtil
				.getBean("sessionFactory");
		Session session = sf.openSession();
		Criteria criteria = session.createCriteria(clazz);
		for (Criterion crierion : listCriteria) {
			criteria.add(crierion);
		}
		criteria.setFirstResult(start);


		criteria.setMaxResults(start + limit);
		List result = criteria.list();
		if (result != null) {
			Iterator iterator = result.iterator();
			while (iterator.hasNext()) {
				list.add(iterator.next());
			}
		}

		session.close();
	}

 fullData还有一个重要的作用就是初始化被代理的list，这段代码都是hibernate的操作。
      下面就把完整的代码贴出来，实体类就不贴附件里有代码。

   1、memberList.zul

<?xml version="1.0" encoding="UTF-8"?>
<?variable-resolver class="org.zkoss.zkplus.spring.DelegatingVariableResolver"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit" arg0="./demo"?>
<window id="demo">

    <zscript language="javascript" src="memberList.js">
    </zscript>
    <groupbox id="main" mold="3d" width="100%">
        <caption label="View">
            <button label="新 增" height="18px"
                onClick="newUserWin.doModal();" />
            <button label="查 询" height="18px"
                onClick="queryUserWin.doModal();" />
            <button label="修 改" height="18px"
                onClick="updateUserWin.doModal();" />
        </caption>
        <window id="userWin">
            <listbox id="userListBox" mold="paging"
                model="@{memberList}" selectedItem="@{selectedMember}">
                <listhead>
                    <listheader label="登陆名" sort="auto" />
                    <listheader label="中文名" sort="auto" />
                    <listheader label="注册日期" sort="auto" />
                </listhead>

                <listitem self="@{each=member}">
                    <listcell label="@{member.loginname}" />
                    <listcell label="@{member.truename}" />
                    <listcell label="@{member.registDate}" />
                </listitem>
            </listbox>
        </window>
    </groupbox>

    <window id="newUserWin" visible="false" width="480px">
        <groupbox mold="3d" width="100%">
            <caption label="新增用户"></caption>
            <grid>
                <rows>
                    <row>
                        <label value="帐 号" />
                        <textbox id="user_loginname"
                            value="@{member.loginname}" constraint="/.{2,4}/:长度在2,4之间" />
                    </row>
                    <row>
                        <label value="用户名" />
                        <textbox id="user_truename"
                            value="@{member.truename}" />
                    </row>
                    <row>
                        <label value="密 码" />
                        <textbox id="user_password"
                            value="@{member.password}" />
                    </row>
                </rows>
            </grid>
            <separator />
            <hbox spacing="10px">
                <space bar="false" spacing="10px" />
                <button label="确 定" onClick="save()" />
                <button label="取 消"
                    onClick="newUserWin.setVisible(false);" />
            </hbox>
        </groupbox>
    </window>
    <window id="queryUserWin" visible="false" width="480px">
        <groupbox mold="3d" width="100%">
            <caption label="查询用户"></caption>
            <grid>
                <rows>
                    <row>
                        <label value="帐 号" />
                        <textbox id="query_loginname" />
                    </row>
                    <row>
                        <label value="用户名" />
                        <textbox id="query_truename" />
                    </row>
                </rows>
            </grid>
            <separator />
            <hbox spacing="10px">
                <space bar="false" spacing="10px" />
                <button label="查 询" onClick="javascript:query();" />
                <button label="取 消"
                    onClick="queryUserWin.setVisible(false);" />
            </hbox>
        </groupbox>
    </window>
    <window id="updateUserWin" visible="false" width="480px">
        <groupbox mold="3d" width="100%">
            <caption label="修改用户"></caption>
            <grid>
                <rows>
                    <row>
                        <label value="帐 号" />
                        <textbox value="@{selectedUser.loginname}" />
                    </row>
                    <row>
                        <label value="用户名" />
                        <textbox value="@{selectedUser.truename}" />
                    </row>
                    <row>
                        <label value="密 码" />
                        <textbox value="@{selectedUser.password}" />
                    </row>

                </rows>
            </grid>
            <separator />
            <hbox spacing="10px">
                <space bar="false" spacing="10px" />
                <button label="确 定" onClick="javascript:update();" />
                <button label="取  消"
                    onClick="updateUserWin.setVisible(false);" />
            </hbox>
        </groupbox>
    </window>
</window>

<?xml version="1.0" encoding="UTF-8"?>
<?variable-resolver class="org.zkoss.zkplus.spring.DelegatingVariableResolver"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit" arg0="./demo"?>
<window id="demo">
	
	<zscript language="javascript" src="memberList.js">
	</zscript>
	<groupbox id="main" mold="3d" width="100%">
		<caption label="View">
			<button label="新 增" height="18px"
				onClick="newUserWin.doModal();" />
			<button label="查 询" height="18px"
				onClick="queryUserWin.doModal();" />
			<button label="修 改" height="18px"
				onClick="updateUserWin.doModal();" />
		</caption>
		<window id="userWin">
			<listbox id="userListBox" mold="paging"
				model="@{memberList}" selectedItem="@{selectedMember}">
				<listhead>
					<listheader label="登陆名" sort="auto" />
					<listheader label="中文名" sort="auto" />
					<listheader label="注册日期" sort="auto" />
				</listhead>

				<listitem self="@{each=member}">
					<listcell label="@{member.loginname}" />
					<listcell label="@{member.truename}" />
					<listcell label="@{member.registDate}" />
				</listitem>
			</listbox>
		</window>
	</groupbox>

	<window id="newUserWin" visible="false" width="480px">
		<groupbox mold="3d" width="100%">
			<caption label="新增用户"></caption>
			<grid>
				<rows>
					<row>
						<label value="帐 号" />
						<textbox id="user_loginname"
							value="@{member.loginname}" constraint="/.{2,4}/:长度在2,4之间" />
					</row>
					<row>
						<label value="用户名" />
						<textbox id="user_truename"
							value="@{member.truename}" />
					</row>
					<row>
						<label value="密 码" />
						<textbox id="user_password"
							value="@{member.password}" />
					</row>
				</rows>
			</grid>
			<separator />
			<hbox spacing="10px">
				<space bar="false" spacing="10px" />
				<button label="确 定" onClick="save()" />
				<button label="取 消"
					onClick="newUserWin.setVisible(false);" />
			</hbox>
		</groupbox>
	</window>
	<window id="queryUserWin" visible="false" width="480px">
		<groupbox mold="3d" width="100%">
			<caption label="查询用户"></caption>
			<grid>
				<rows>
					<row>
						<label value="帐 号" />
						<textbox id="query_loginname" />
					</row>
					<row>
						<label value="用户名" />
						<textbox id="query_truename" />
					</row>
				</rows>
			</grid>
			<separator />
			<hbox spacing="10px">
				<space bar="false" spacing="10px" />
				<button label="查 询" onClick="javascript:query();" />
				<button label="取 消"
					onClick="queryUserWin.setVisible(false);" />
			</hbox>
		</groupbox>
	</window>
	<window id="updateUserWin" visible="false" width="480px">
		<groupbox mold="3d" width="100%">
			<caption label="修改用户"></caption>
			<grid>
				<rows>
					<row>
						<label value="帐 号" />
						<textbox value="@{selectedUser.loginname}" />
					</row>
					<row>
						<label value="用户名" />
						<textbox value="@{selectedUser.truename}" />
					</row>
					<row>
						<label value="密 码" />
						<textbox value="@{selectedUser.password}" />
					</row>

				</rows>
			</grid>
			<separator />
			<hbox spacing="10px">
				<space bar="false" spacing="10px" />
				<button label="确 定" onClick="javascript:update();" />
				<button label="取  消"
					onClick="updateUserWin.setVisible(false);" />
			</hbox>
		</groupbox>
	</window>
</window>

 注意zul文件开头处理指令variable-resolver指定了org.zkoss.zkplus.spring.DelegatingVariableResolver来处理

EL中的变量，使用这个类可以在EL中直接使用spring定义的bean id，例如

      <variables mService="${memberService}" />

就是引用spring ApplictionContext中id为memberService的bean来定义名为mService的变量。init指令初始化了

org.zkoss.zkplus.databind.AnnotateDataBinderInit，这个类用来就是用来实现数据绑定的，至于是怎么实现的我

也不太清楚，只知道初始化后就可以使用数据绑定了。

   2、memberList.js

var member  = new com.liyuan.spore.entity.Member();
var memberList = memberService.queryAllUser();
var selectedMember = memberList.get(0);
function save(){
  if(memberService.userIsExist(member.loginname)){
     memberService.saveNewUser(member);
     newUserWin.setVisible(false);
  }else
     throw new WrongValueException(user_loginname, "账号已存在！");
}
function query(){
  var loginname=queryUserWin.getFellow("query_loginname").value;
  var truename=queryUserWin.getFellow("query_truename").value;
  var queryUser  = new com.liyuan.spore.entity.Member();
  if(!"".equals(loginname))
     queryUser.setLoginname("%"+loginname+"%");
  if(!"".equals(truename))
     queryUser.setTruename("%"+truename+"%");
  ulist = main.getFellow("userWin").getFellow("userListBox");
  newList = new org.zkoss.zkplus.databind.BindingListModelList(memberService.query(queryUser),true);
  ulist.setModel(newList);
  selectedMember = newList.getElementAt(0);
  queryUserWin.setVisible(false);
}
function update(){
  memberService.modify(selectedUser);
}

var member  = new com.liyuan.spore.entity.Member();
var memberList = memberService.queryAllUser();
var selectedMember = memberList.get(0);
function save(){
  if(memberService.userIsExist(member.loginname)){
     memberService.saveNewUser(member);
     newUserWin.setVisible(false);
  }else
     throw new WrongValueException(user_loginname, "账号已存在！");
}
function query(){
  var loginname=queryUserWin.getFellow("query_loginname").value;
  var truename=queryUserWin.getFellow("query_truename").value;
  var queryUser  = new com.liyuan.spore.entity.Member();
  if(!"".equals(loginname))
     queryUser.setLoginname("%"+loginname+"%");
  if(!"".equals(truename))
     queryUser.setTruename("%"+truename+"%");
  ulist = main.getFellow("userWin").getFellow("userListBox");
  newList = new org.zkoss.zkplus.databind.BindingListModelList(memberService.query(queryUser),true);        
  ulist.setModel(newList);
  selectedMember = newList.getElementAt(0);
  queryUserWin.setVisible(false);
}
function update(){
  memberService.modify(selectedUser);
}

第2行，调用memberService.queryAllUser()获取一个可以分页的list在memberList.zul中又通过注释的方式把数据绑

定到了listbox上。这里的memberService是直接通过org.zkoss.zkplus.spring.DelegatingVariableResolver引用

的spring ApplicationContext中定义的bean。

   3、MemberService

package com.liyuan.spore.zkdemo;

import java.math.BigDecimal;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.liyuan.spore.entity.Member;

@Service("memberService")
@Scope("request")
public class MemberService {
    private SessionFactory sessionFactory;

    @Autowired
    public void setSessionFactory(@Qualifier("sessionFactory")
    SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public PagingList queryAllUser() {
        Session session = sessionFactory.getCurrentSession();
        Query query = session.createSQLQuery("select count(*) from T_MEMBER");
        BigDecimal size = (BigDecimal) query.uniqueResult();
        PagingList plist = new PagingList(Member.class, size.intValue());
        plist.fullData(0, 20);
        return plist;
    }

    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public boolean userIsExist(String loginname) {
        Session session = sessionFactory.getCurrentSession();
        List list = session.createCriteria(Member.class).add(
                Restrictions.eq("loginname", loginname)).list();
        return list.isEmpty();

    }

    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public void saveNewUser(Member user) {
        Session session = sessionFactory.getCurrentSession();
        session.save(user);
    }

    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public PagingList query(Member user) {
        Session session = sessionFactory.getCurrentSession();

        Example example = Example.create(user);
        example.enableLike();
        example.excludeZeroes();
        example.excludeNone();
        Criteria criteria = session.createCriteria(Member.class);
        criteria.setProjection(Projections.rowCount()).add(example);
        Integer size = (Integer) criteria.uniqueResult();
        PagingList plist = new PagingList(Member.class, size.intValue());
        plist.addCriterion(example);
        plist.fullData(0, 20);
        return plist;

    }

    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public void modify(Member user) {
        Session session = sessionFactory.getCurrentSession();
        session.update(user);
    }
}

package com.liyuan.spore.zkdemo;

import java.math.BigDecimal;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.liyuan.spore.entity.Member;

@Service("memberService")
@Scope("request")
public class MemberService {
	private SessionFactory sessionFactory;

	@Autowired
	public void setSessionFactory(@Qualifier("sessionFactory")
	SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
	public PagingList queryAllUser() {
		Session session = sessionFactory.getCurrentSession();
		Query query = session.createSQLQuery("select count(*) from T_MEMBER");
		BigDecimal size = (BigDecimal) query.uniqueResult();
		PagingList plist = new PagingList(Member.class, size.intValue());
		plist.fullData(0, 20);
		return plist;
	}

	@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
	public boolean userIsExist(String loginname) {
		Session session = sessionFactory.getCurrentSession();
		List list = session.createCriteria(Member.class).add(
				Restrictions.eq("loginname", loginname)).list();
		return list.isEmpty();

	}

	@Transactional(readOnly = false, propagation = Propagation.REQUIRED)
	public void saveNewUser(Member user) {
		Session session = sessionFactory.getCurrentSession();
		session.save(user);
	}

	@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
	public PagingList query(Member user) {
		Session session = sessionFactory.getCurrentSession();

		Example example = Example.create(user);
		example.enableLike();
		example.excludeZeroes();
		example.excludeNone();
		Criteria criteria = session.createCriteria(Member.class);
		criteria.setProjection(Projections.rowCount()).add(example);
		Integer size = (Integer) criteria.uniqueResult();
		PagingList plist = new PagingList(Member.class, size.intValue());
		plist.addCriterion(example);
		plist.fullData(0, 20);
		return plist;

	}

	@Transactional(readOnly = false, propagation = Propagation.REQUIRED)
	public void modify(Member user) {
		Session session = sessionFactory.getCurrentSession();
		session.update(user);
	}
}

这段代码没有什么好解释的。

   4、PagingList.java

package com.liyuan.spore.zkdemo;

import java.util.AbstractList;
import java.util.ArrayList;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Criterion;
import org.zkoss.zkplus.spring.SpringUtil;

public class PagingList extends AbstractList implements java.io.Serializable {

    private int last;
    private int limit;
    private int size;
    private Class clazz;
    private ArrayList list;

    private LinkedList<Criterion> listCriteria;

    public PagingList(Class entityClass, int theSize) {
        size = theSize;
        clazz = entityClass;
        listCriteria = new LinkedList<Criterion>();
        last = 0;
        // fullData(0, 20);
    }

    public void setSize(int size) {
        this.size = size;
    }

    public void addCriterion(Criterion cr) {
        listCriteria.add(cr);
    }

    public void fullData(int start, int limit) {
        this.last = start + limit;
        this.limit = limit;
        list = new ArrayList(limit);
        SessionFactory sf = (SessionFactory) SpringUtil
                .getBean("sessionFactory");
        Session session = sf.openSession();
        Criteria criteria = session.createCriteria(clazz);
        for (Criterion crierion : listCriteria) {
            criteria.add(crierion);
        }
        criteria.setFirstResult(start);
        criteria.setMaxResults(start + limit);
        List result = criteria.list();
        if (result != null) {
            Iterator iterator = result.iterator();
            while (iterator.hasNext()) {
                list.add(iterator.next());
            }
        }

        session.close();
    }

    @Override
    public Object get(int index) {
        if (index >= last || index <= last - limit * 2) {
            this.fullData(index, limit);
            index = 0;
            if (list.size() == 0)
                return null;
            else

                return list.get(index);
        } else {
            index = index - (last - limit);
            if (list.size() == 0)
                return null;
            else
                return list.get(index);
        }
    }

    @Override
    public int size() {

        return size;
    }

    @Override
    public int hashCode() {
        int hashCode = 1;
        Iterator i = list.iterator();
        while (i.hasNext()) {
            Object obj = i.next();
            hashCode = 31 * hashCode + (obj == null ? 0 : obj.hashCode());
        }
        return hashCode;
    }

    @Override
    public int indexOf(Object o) {

        return list.indexOf(o);
    }

    @Override
    public Iterator iterator() {
        // TODO Auto-generated method stub
        return list.iterator();
    }

    @Override
    public ListIterator listIterator() {

        return list.listIterator();
    }

    @Override
    public ListIterator listIterator(int index) {

        return list.listIterator(index);
    }

    @Override
    public Object remove(int index) {

        return list.remove(index);
    }

    @Override
    public Object[] toArray() {
        return list.toArray();
    }

    public void removeCriterions() {
        this.listCriteria.clear();
    }

}

package com.liyuan.spore.zkdemo;

import java.util.AbstractList;
import java.util.ArrayList;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Criterion;
import org.zkoss.zkplus.spring.SpringUtil;

public class PagingList extends AbstractList implements java.io.Serializable {

	private int last;
	private int limit;
	private int size;
	private Class clazz;
	private ArrayList list;

	private LinkedList<Criterion> listCriteria;

	public PagingList(Class entityClass, int theSize) {
		size = theSize;
		clazz = entityClass;
		listCriteria = new LinkedList<Criterion>();
		last = 0;
		// fullData(0, 20);
	}

	public void setSize(int size) {
		this.size = size;
	}

	public void addCriterion(Criterion cr) {
		listCriteria.add(cr);
	}

	public void fullData(int start, int limit) {
		this.last = start + limit;
		this.limit = limit;
		list = new ArrayList(limit);
		SessionFactory sf = (SessionFactory) SpringUtil
				.getBean("sessionFactory");
		Session session = sf.openSession();
		Criteria criteria = session.createCriteria(clazz);
		for (Criterion crierion : listCriteria) {
			criteria.add(crierion);
		}
		criteria.setFirstResult(start);
		criteria.setMaxResults(start + limit);
		List result = criteria.list();
		if (result != null) {
			Iterator iterator = result.iterator();
			while (iterator.hasNext()) {
				list.add(iterator.next());
			}
		}

		session.close();
	}

	@Override
	public Object get(int index) {
		if (index >= last || index <= last - limit * 2) {
			this.fullData(index, limit);
			index = 0;
			if (list.size() == 0)
				return null;
			else

				return list.get(index);
		} else {
			index = index - (last - limit);
			if (list.size() == 0)
				return null;
			else
				return list.get(index);
		}
	}

	@Override
	public int size() {

		return size;
	}

	@Override
	public int hashCode() {
		int hashCode = 1;
		Iterator i = list.iterator();
		while (i.hasNext()) {
			Object obj = i.next();
			hashCode = 31 * hashCode + (obj == null ? 0 : obj.hashCode());
		}
		return hashCode;
	}

	@Override
	public int indexOf(Object o) {

		return list.indexOf(o);
	}

	@Override
	public Iterator iterator() {
		// TODO Auto-generated method stub
		return list.iterator();
	}

	@Override
	public ListIterator listIterator() {

		return list.listIterator();
	}

	@Override
	public ListIterator listIterator(int index) {

		return list.listIterator(index);
	}

	@Override
	public Object remove(int index) {

		return list.remove(index);
	}

	@Override
	public Object[] toArray() {
		return list.toArray();
	}

	public void removeCriterions() {
		this.listCriteria.clear();
	}

}

这段代码就是可以分页的list，和hibernate高度耦合，但是对于单一实体的分页查询是可以重用的。