ssh实现分页查询

action层

	private Integer currPage=1;
	
	
	public void setCurrPage(Integer currPage) {
		this.currPage = currPage;
	}

	/**
	 * 分页查询员工的执行的方法
	 * @return
	 */
	public String findAll() {
		PageBean<Employee> pageBean = employeeService.findByPage(currPage);
		ActionContext.getContext().getValueStack().push(pageBean);
		return "findAll";
	}

Service层

	public PageBean<Employee> findByPage(Integer currPage) {
		// TODO Auto-generated method stub
		PageBean<Employee> pageBean = new PageBean<>();
		// 封装当前的数据
		pageBean.setCurrPage(currPage);
		// 封装每页显示的记录数
		int pageSize = 3;
		pageBean.setPageSize(pageSize);
		// 封装总记录数
		int totalCount = employeeDao.findCount();
		pageBean.setTotalCount(totalCount);
		// 封装总页数
		double tc = totalCount;
		Double num = Math.ceil(tc/pageSize);
		pageBean.setTotalPage(num.intValue());
		// 封装每页显示的数据
		int begin = (currPage - 1)* pageSize;
		List<Employee> list = employeeDao.findByPage(begin,pageSize);
		pageBean.setList(list);
		return pageBean;
	}

Dao层

	@Override
	public int findCount() {
		String hql = "select count(*) from Employee";
		List<Long> list = (List<Long>) this.getHibernateTemplate().find(hql);
		if (list.size() > 0) {
			return list.get(0).intValue();
		}
		return 0;
	}

	@Override
	public List<Employee> findByPage(int begin, int pageSize) {
		// TODO Auto-generated method stub
		DetachedCriteria criteria = DetachedCriteria.forClass(Employee.class);
		List<Employee> list = (List<Employee>) this.getHibernateTemplate().findByCriteria(criteria,begin,pageSize);
		return list;
	}

Domain

1.pageBean

package com.byf.ssh_employee.domain;
/**
 * 分页封装的类
 * @author hp
 *
 */

import java.util.List;

public class PageBean<T> {
	private int currPage; // 当前页数
	private int pageSize; // 每页显示的记录数
	private int totalCount; // 总记录数
	private int totalPage; // 总页数
	private List<T> list; // 每页显示的数据
	public int getCurrPage() {
		return currPage;
	}
	public void setCurrPage(int currPage) {
		this.currPage = currPage;
	}
	public int getPageSize() {
		return pageSize;
	}
	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}
	public int getTotalCount() {
		return totalCount;
	}
	public void setTotalCount(int totalCount) {
		this.totalCount = totalCount;
	}
	public int getTotalPage() {
		return totalPage;
	}
	public void setTotalPage(int totalPage) {
		this.totalPage = totalPage;
	}
	public List<T> getList() {
		return list;
	}
	public void setList(List<T> list) {
		this.list = list;
	}
}

2.Employee

package com.byf.ssh_employee.domain;
/**
 * 员工的实体
 * @author hp
 *
 */

import java.util.Date;

public class Employee {
	private Integer eid;
	private String ename;
	private String sex;
	private Date birthday;
	private Date joinDate;
	private String eno;
	private String username;
	private String password;
	
	// 所属的部门
	private Department department;

	public Integer getEid() {
		return eid;
	}

	public void setEid(Integer eid) {
		this.eid = eid;
	}

	public String getEname() {
		return ename;
	}

	public void setEname(String ename) {
		this.ename = ename;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	public Date getBirthday() {
		return birthday;
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}

	public Date getJoinDate() {
		return joinDate;
	}

	public void setJoinDate(Date joinDate) {
		this.joinDate = joinDate;
	}

	public String getEno() {
		return eno;
	}

	public void setEno(String eno) {
		this.eno = eno;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public Department getDepartment() {
		return department;
	}

	public void setDepartment(Department department) {
		this.department = department;
	}
}

Struts.xml

<action name="employee_*" class="employeeAction" method="{1}">
	<result name="findAll">/jsp/employee/list.jsp</result>
</action>

请求查询

employee_findAll.action

显示查询的jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>
<html>
<head>
<style type="text/css">
.table1 {
	border: 1px solid #ddd;
	width: 900px;
}

thead {
	background-color: lightblue;
}
</style>
</head>
<body background="<%=basePath%>images/bg.jpg"
	style="background-repeat: no-repeat; background-size: 100% 100%; background-attachment: fixed;">
	<table border="0" width="900px">
		<tr>
			<td align="center" style="font-size: 24px; color: #666">部门管理</td>
		</tr>
		<tr>
			<td align="right"><a
				href="<%=basePath%>department_saveUI.action">添加</a></td>
		</tr>
	</table>
	<br />
	<table cellspacing="0" border="1" class="table1">
		<thead>
			<tr>
				<td align="center">编号</td>
				<td align="center">员工姓名</td>
				<td align="center">性别</td>
				<td align="center">出生日期</td>
				<td align="center">入职时间</td>
				<td align="center">所属部门</td>
				<td align="center">编辑</td>
			</tr>
		</thead>
		<tbody>
			<s:iterator value="list" var="e">
				<tr>
					<td align="center"><s:property value="#e.eno" /></td>
					<td align="center"><s:property value="#e.ename" /></td>
					<td align="center"><s:property value="#e.sex" /></td>
					<td align="center"><s:date name="#e.birthday" format="yyyy-MM-dd"/></td>
					<td align="center"><s:date name="#e.joinDate" format="yyyy-MM-dd"/></td>
					<td align="center"><s:property value="#e.department.dname" /></td>
				</tr>
			</s:iterator>
		</tbody>
	</table>
	<br />


	<table border="0" cellspacing="0" cellpadding="0" width="900px">
		<tr>
			<td align="right"><span>第<s:property value="currPage" />/<s:property
						value="totalPage" />页
			</span> <span>总记录数<s:property value="totalCount" />&nbsp;&nbsp;每页显示<s:property
						value="pageSize" />&nbsp;&nbsp;
			</span> <span> <s:if test="currPage !=1">
						<a href="<%=basePath%>department_findAll.action?currPage=1">[首页]</a>&nbsp;&nbsp; 
				<a
							href="<%=basePath%>department_findAll.action?currPage=<s:property value="currPage-1" />">[上一页]</a>&nbsp;&nbsp;
			</s:if> <s:if test="currPage !=totalPage">
						<a
							href="<%=basePath%>department_findAll.action?currPage=<s:property value="currPage+1" />">[下一页]</a>&nbsp;&nbsp;
				<a
							href="<%=basePath%>department_findAll.action?currPage=<s:property value="totalPage" />">[尾页]</a>&nbsp;&nbsp;
			</s:if>
			</span></td>
		</tr>
	</table>
</body>
</html>

关键：<s:date name="#e.birthday" format="yyyy-MM-dd"/>