分页&条件查询分页

BaseDao

package day21;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.ResultSetHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import com.sun.org.apache.bcel.internal.generic.NEW;

public abstract class BaseDao {

	public List findAllObject(Connection conn, String sqlList,
			Class clazz) throws SQLException {
		return this.findAllObjectByCondition(conn, sqlList, clazz, null);
	}

	public  List findAllObjectByCondition(Connection conn, String sqlList,
			Class clazz, Object ... params) throws SQLException {
		QueryRunner query=new QueryRunner();
		return (List)query.query(conn, sqlList, new BeanListHandler(clazz),params);
	}

	@SuppressWarnings("unchecked")
	public int getCount(Connection conn, String sql) throws SQLException {
		/****************/
		 ResultSetHandler resultSetHandler=new ResultSetHandler() {

			public Object handle(ResultSet rs) throws SQLException {
				int count=0;
				if(rs.next()){
					count=rs.getInt(1); 
				}
				return count;
			}
		};
		/*************** */
		int count=0;
		QueryRunner query=new QueryRunner();
		count=(Integer)query.query(conn, sql, resultSetHandler);
		return count;
	}

	public int getCount(Connection conn, String sql, Object[] params) throws SQLException {
		 ResultSetHandler resultSetHandler=new ResultSetHandler() {

				public Object handle(ResultSet rs) throws SQLException {
					int count=0;
					if(rs.next()){
						count=rs.getInt(1); 
					}
					return count;
				}
			};
			/*************** */
			int count=0;
			QueryRunner query=new QueryRunner();
			count=(Integer)query.query(conn, sql, resultSetHandler,params);
			return count;
	}
}

2. DaoFactory:

package day21;

public class DaoFactory {
	
	//获取职业接口对象
	public static  DaoStudent getDaoStudent() {
		return new DaoStudentImpl();
	}

}

3. DaoStudent

package day21;

import java.util.List;

public interface DaoStudent {

	
/*
 * 查询所有的记录和总记录数
 */
	QueryResult<Student> findAllStudent(int beginIndex, int maxSize);
/*
 * 通过条件查询员工信息
 */
	QueryResult<Student> findAllStudentByCondition(SearchStudent searchStudent,
			int beginIndex, int maxSize) throws Exception;

}

4. DaoStudentImpl:

package day21;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;


public class DaoStudentImpl extends BaseDao implements DaoStudent {

	//private String sqlCount;

	@SuppressWarnings("unchecked")
	public QueryResult<Student> findAllStudent(int beginIndex, int maxSize)   {
		//查询页面显示的数据
		DBManager dbManager=null;
		Connection conn=null;
		dbManager=DBManager.getDbManager();
		try {
			conn=dbManager.getConnection();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		QueryResult<Student> qr=null;
		qr=new QueryResult<Student>();
		
		//组织页面显示的SQL
		String sqlList="select id,username,sex,major from employees order by id limit "+beginIndex+","+maxSize;
		String sqlCount="select count(*) from employees";
		//设置封装数据的javaBean
		Class clazz=Student.class;
		//调用父类的方法查询
		try {
			List<Student> list=super.findAllObject(conn,sqlList,clazz);
			qr.setList(list);
			int count=super.getCount(conn,sqlCount);
			qr.setCount(count);
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			try {
				dbManager.closeResource(conn, null,null);
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		return qr;
	}

	public QueryResult<Student> findAllStudentByCondition(
			SearchStudent searchStudent, int beginIndex, int maxSize) throws Exception {
		DBManager dbManager=null;
		Connection conn=null;
		dbManager=DBManager.getDbManager();
		try {
			conn=dbManager.getConnection();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		QueryResult<Student> qr=null;
		qr=new QueryResult<Student>();
		//组织页面显示的SQL
		String sqlList="select id,username,sex,major from employees where 1=1 ";
		String sqlCount="select count(*) from employees where 1=1 ";
		
		//组织查询调节
		StringBuffer sqlWhere=new StringBuffer("");
		//定义保存参数的List
		List paramList=new ArrayList();
		if(searchStudent.getCname()!=null&&!"".equals(searchStudent.getCname().trim())){
			sqlWhere.append("  and cname like ?");
			paramList.add("%"+searchStudent.getCname().trim()+"%");
		}
		if(searchStudent.getMajor()!=null&&!"".equals(searchStudent.getMajor().trim())){
			sqlWhere.append("  and major like ?");
			paramList.add("%"+searchStudent.getMajor().trim()+"%");
		}
		
		//形成最终的SqL
		sqlList=sqlList+sqlWhere.toString();
		//设置排序
		sqlList=sqlList+"  order by id";
		//设置查询记录数
		sqlList=sqlList+"  limit "+beginIndex+","+maxSize;
		sqlCount=sqlCount+sqlWhere.toString();
		System.out.println("sqlList=  "+sqlList);
		System.out.println("sqlCount=  "+sqlCount);
		
		//设置？参数值
		Object[]params=paramList.toArray();
		
		Class clazz=Student.class;
		List<Student> list=super.findAllObjectByCondition(conn, sqlList, clazz, params);
		qr.setList(list);
		
		int count=super.getCount(conn, sqlCount ,params);
		qr.setCount(count);
		
		
		dbManager.closeResource(conn, null, null);
		
		
		return qr;
	}
	
}

5. DBManager:

package day21;

import java.sql.Connection;
import java.sql.SQLException;

import org.apache.commons.dbcp.BasicDataSource;

import com.mysql.jdbc.ResultSet;
import com.mysql.jdbc.Statement;

public class DBManager {
	//静态的变量是所有对象共享的，只在类执行的时候加载一次（称为懒汉式的单例模式）
	private static DBManager dbManager=new DBManager();
	private  BasicDataSource bds=null;
	/*
	 * 私有的外部程序不能创建DBManager的实例
	 */
	private DBManager(){
		System.out.println("private DBManager()***********");
       bds=new BasicDataSource();
		
		//设置用户名与密码
		bds.setUsername("root");
		bds.setPassword("123456");
		
		//设置url
		bds.setUrl("jdbc:mysql://localhost:3306/test");
		//设置驱动
		bds.setDriverClassName("com.mysql.jdbc.Driver");
		
		
		//设置初始化连接数
		bds.setInitialSize(4);
		//设置最大连接数
		bds.setMaxActive(10);
		//设置最大空闲数
		bds.setMaxIdle(5);
		//设置最小空闲数
		bds.setMinIdle(3);
		//设置最大等待时间，以毫秒为单位
		bds.setMaxWait(5000);
	}
	
	/*
	 * 外部的程序获取DBManager对象的方法
	 */
	public static DBManager getDbManager() {
		System.out.println("public static DBManager getDbManager() ~~~~~~~~");
		return dbManager; 
	}
	/*
	 * 获取连接
	 */
	public Connection getConnection() throws SQLException {
		Connection conn=null;
		conn=bds.getConnection();
		return conn;
	}
	
	/*
	 * 关闭资源
	 */
	public void closeResource(Connection conn,Statement stmt,ResultSet rs) throws SQLException {
		if(rs!=null){
			rs.close();
		}
		if(stmt!=null){
			stmt.close();
		}
		if(conn!=null){
			conn.close();
		}
	}
	
}

6. ListConditionServlet

package day21;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ListConditionServlet extends HttpServlet {
	public ListConditionServlet() {
		super();
	}

	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
	}
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request, response);
	}
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=utf-8");
		PrintWriter out = response.getWriter();
		request.setCharacterEncoding("UTF-8");
		String path="";
		
       System.out.println(request.getParameter("flag"));
   	SearchStudent searchStudent=new SearchStudent();
		
		//设置分页的默认参数
		int curPage=1;//当前页
		int maxSize=3;//每页显示最大数
		
		//获取当前要显示的页数
		String scurPage=request.getParameter("curPage");
		if(scurPage!=null&&!"".equals(scurPage.trim())){
			curPage=Integer.parseInt(scurPage.trim());
		}
		
		//获取每页显示的最大记录数
		String smaxSize=request.getParameter("maxSize");
		if(smaxSize!=null&&!"".equals(smaxSize.trim())){
			maxSize=Integer.parseInt(smaxSize.trim());
		}
		String flag="search";
		String sflag=request.getParameter("flag");
		if(sflag!=null&&!"".equals(sflag.trim())){
			flag=sflag.trim();
		}
		System.out.println("flag=  "+flag);
		//如果flag=search 则点击的是“搜索”和菜单“高级查询”获取的页面输入
		if("search".equals(flag)){
			String cname=request.getParameter("cname");
			String major=request.getParameter("jobname");
			searchStudent.setCname(cname);
			searchStudent.setMajor(major);
		}
		//如果flag=page 则点击的是“上页。。。。”则获取的值应是上次点击“搜索”时的值
		if("page".equals(flag)){
			System.out.println("flag=  "+flag);
			String cname=request.getParameter("old_cname");
			String major=request.getParameter("old_jobname");
			searchStudent.setCname(cname);
			searchStudent.setMajor(major);
		}
		
		request.setAttribute("searchStudent", searchStudent);
		//计算开始索引
		int beginIndex=(curPage-1)*maxSize;
		
	
		
		/*String cname=request.getParameter("cname");
		String major=request.getParameter("jobname");
		searchStudent.setCname(cname);
		searchStudent.setMajor(major);*/
		
		DaoStudent daoStudent=DaoFactory.getDaoStudent();
		QueryResult<Student> qr = null;
		try {
			qr = daoStudent.findAllStudentByCondition(searchStudent,beginIndex, maxSize);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if(qr!=null&&qr.getList()!=null){
		   request.setAttribute("listStudent", qr.getList());
		}
		//设置分页信息
		PageBean pageBean=new PageBean();
		pageBean.init(curPage, qr.getCount(), maxSize);
		
		request.setAttribute("pageBean", pageBean);
		path="/listCondition.jsp";
		request.getRequestDispatcher(path).forward(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}

7. ListServlet:

package day21;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ListServlet extends HttpServlet {

	/**
	 * 分页：
	 * **2种分页
	 * ***查询所有符合条件的数据到内存中，缺点：占用内存
	 * ***页面显示什么，就查询什么，缺点：频繁操作数据库
	 * 分页需要的数据
	 *      总记录数   当前页   总页数    上一页    下一页   每页显示条数    页面显示的数据（List中）
	 *      
	 *      从数据库中查询的：总记录数、页面显示的数据（List中）
	 *      计算的： 当前页   总页数    上一页    下一页   每页显示条数 
	 */
	public ListServlet() {
		super();
	}

	
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=utf-8");
		PrintWriter out = response.getWriter();
		request.setCharacterEncoding("UTF-8");
		String path="";
		
		System.out.println(request.getParameter("flag"));
		
		
		//设置分页的默认参数
		int curPage=1;//当前页
		int maxSize=3;//每页显示最大数
		
		//获取当前要显示的页数
		String scurPage=request.getParameter("curPage");
		if(scurPage!=null&&!"".equals(scurPage.trim())){
			curPage=Integer.parseInt(scurPage.trim());
		}
		
		//获取每页显示的最大记录数
		String smaxSize=request.getParameter("maxSize");
		if(smaxSize!=null&&!"".equals(smaxSize.trim())){
			maxSize=Integer.parseInt(smaxSize.trim());
		}
		
		//计算开始索引
		int beginIndex=(curPage-1)*maxSize;
		
		
		//获取DaoStudent接口对象
		DaoStudent daoStudent=DaoFactory.getDaoStudent();
		QueryResult<Student> qr=daoStudent.findAllStudent(beginIndex,maxSize);
		
		//放置页面显示的数据到作用域中
		request.setAttribute("studentList", qr.getList());
		
		//设置分页信息
		PageBean pageBean=new PageBean();
		pageBean.init(curPage, qr.getCount(), maxSize);
		
		request.setAttribute("pageBean", pageBean);
		
		
		path="/list.jsp";
		request.getRequestDispatcher(path).forward(request, response);
		
		
		
		
	}

	
	public void init() throws ServletException {
		// Put your code here
	}

}

8. PageBean

package day21;

import com.sun.faces.lifecycle.UpdateModelValuesPhase;

public class PageBean {
	private int maxSize;//每页最大记录数
	private int recordCnt;//总记录数
	private int curPage;//当前页
	private int pageCnt;//总页数
	private int prePage;//上一页
	private int nextPage;//下页
	
	//对外接口
	public void  init(int curPage,int recordCnt,int maxSize) {
		this.curPage=curPage;
		this.recordCnt=recordCnt;
		this.maxSize=maxSize;
		
		//计算总页数
		this.pageCnt=this.recordCnt/this.maxSize+(this.recordCnt%this.maxSize==0?0:1);
		//计算上，下页
		update(curPage);
	}
	
	public void update(int curPage) {
		//计算上页
		if(curPage<=1){
			this.prePage=1;
		}else{
			this.prePage=curPage-1;
		}
		//计算下一页
		if(curPage>=this.pageCnt){
			this.nextPage=this.pageCnt;
		}else{
			this.nextPage=curPage+1;
		}
		
	}

	public int getRecordCnt() {
		return recordCnt;
	}
	public void setRecordCnt(int recordCnt) {
		this.recordCnt = recordCnt;
	}
	public int getCurPage() {
		return curPage;
	}
	public void setCurPage(int curPage) {
		this.curPage = curPage;
	}
	public int getPageCnt() {
		return pageCnt;
	}
	public void setPageCnt(int pageCnt) {
		this.pageCnt = pageCnt;
	}
	public int getPrePage() {
		return prePage;
	}
	public void setPrePage(int prePage) {
		this.prePage = prePage;
	}
	public int getNextPage() {
		return nextPage;
	}
	public void setNextPage(int nextPage) {
		this.nextPage = nextPage;
	}
	public int getMaxSize() {
		return maxSize;
	}
	public void setMaxSize(int maxSize) {
		this.maxSize = maxSize;
	}
	
	

}

9. QueryResult:

package day21;

import java.util.List;

public class QueryResult<T>{
	private List list;//页面显示的数据
	private int count;//总的记录数
	public List<Student> getList() {
		return list;
	}
	public void setList(List list) {
		this.list = list;
	}
	public int getCount() {
		return count;
	}
	public void setCount(int count) {
		this.count = count;
	}
	
}

10. SearchStudent:

package day21;

public class SearchStudent {
	private String cname;
	private String jobname;
	private String major;
	public String getMajor() {
		return major;
	}
	public void setMajor(String major) {
		this.major = major;
	}
	public String getCname() {
		return cname;
	}
	public void setCname(String cname) {
		this.cname = cname;
	}
	public String getJobname() {
		return jobname;
	}
	public void setJobname(String jobname) {
		this.jobname = jobname;
	}
	
}

11. Student:

package day21;

public class Student {
	private Integer id;
	private String username;
	private String major;
	private String sex;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getMajor() {
		return major;
	}
	public void setMajor(String major) {
		this.major = major;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	
}

12. TestDaoStudent:

package day21;

import org.junit.Ignore;
import org.junit.Test;

public class TestDaoStudent {
   @Ignore
   public void findAllStudent(){
	   DaoStudent daoStudent=DaoFactory.getDaoStudent();
	   /*
	    * 模拟数据
	    */
	   int beginIndex=0;
	   int maxSize=3;
	   QueryResult <Student> qr=daoStudent.findAllStudent(beginIndex, maxSize);
	   if(qr!=null&&qr.getList()!=null){
		   for(Student st:qr.getList()){
			   System.out.println(st.getId()+"     "+st.getUsername());
		   }
	   }
       System.out.println("总的记录数："+qr.getCount());
       
       //计算上页 下页 总页等信息
       PageBean pageBean=new PageBean();
       
       pageBean.init(2, qr.getCount(), 3);
       
       System.out.println("当前页：  "+pageBean.getCurPage());
       System.out.println("上页：  "+pageBean.getPrePage());
       System.out.println("下页：  "+pageBean.getNextPage());
       System.out.println("总记录数：  "+pageBean.getRecordCnt());
       System.out.println("每页显示最大记录数：  "+pageBean.getMaxSize());
       System.out.println("总页数：  "+pageBean.getPageCnt());
   }
   
   @Test
   public void findAllStudentByCondition() throws Exception{
	   DaoStudent daoStudent=DaoFactory.getDaoStudent();
	   /*
	    * 模拟数据
	    */
	   int beginIndex=0;
	   int maxSize=3;
	   SearchStudent searchStudent=new SearchStudent();
	  // searchStudent.setJobname("CS");
	   QueryResult <Student> qr=daoStudent.findAllStudentByCondition(searchStudent,beginIndex, maxSize);
	   if(qr!=null&&qr.getList()!=null){
		   for(Student st:qr.getList()){
			   System.out.println(st.getId()+"     "+st.getMajor());
		   }
	   }
       System.out.println("总的记录数："+qr.getCount());
       
       //计算上页 下页 总页等信息
       PageBean pageBean=new PageBean();
       
       pageBean.init(2, qr.getCount(), 3);
       
       System.out.println("当前页：  "+pageBean.getCurPage());
       System.out.println("上页：  "+pageBean.getPrePage());
       System.out.println("下页：  "+pageBean.getNextPage());
       System.out.println("总记录数：  "+pageBean.getRecordCnt());
       System.out.println("每页显示最大记录数：  "+pageBean.getMaxSize());
       System.out.println("总页数：  "+pageBean.getPageCnt());
   }
   
}

13. main.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<html>
  <head>
    <title>My JSP 'main.jsp' starting page</title>
  </head>
  
  <body>
  学生管理系统 <br>
  <a href="${pageContext.request.contextPath }/addPersonServlet" target="mainFrane" title="学生信息录入">学生信息录入</a></br>
    <a href="${pageContext.request.contextPath }/ListServlet" 
    target="mainFrane" title="学生信息录入">学生信息查询</a></br>
    <a href="${pageContext.request.contextPath }/ListConditionServlet" 
    target="mainFrane" title="学生信息录入">学生信息高级查询</a></br>
  
  </body>
</html>

14. list.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%request.setCharacterEncoding("UTF-8"); %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'list.jsp' starting page</title>
    
  </head>
  
  <body>
   <table border="1">
   <input type="hidden" name="flag" id="flag" value="page"/>
   <tr>
     <th>编号</th>
     <th>姓名</th>
     <th>性别</th>
     <th>专业</th>  
   </tr>
   
   <c:forEach items="${studentList}" var="student">
   <tr>
     <td>${student.id }</td>
      <td>${student.username }</td>
       <td>${student.sex}</td>
        <td>${student.major }</td>
   </tr>
   </c:forEach>
   </table>
   
   共有${pageBean.recordCnt }条记录 共${pageBean.pageCnt }页 当前是${pageBean.curPage }页
   <!-- 第一种 -->
   <a href="${pageContext.request.contextPath }/ListServlet?curPage=1&maxSize=${pageBean.maxSize}">首页</a>
   <a href="${pageContext.request.contextPath }/ListServlet?curPage=${pageBean.prePage }&maxSize=${pageBean.maxSize}">上页</a>
   <a href="${pageContext.request.contextPath }/ListServlet?curPage=${pageBean.nextPage }&maxSize=${pageBean.maxSize}">下页</a>
   <a href="${pageContext.request.contextPath }/ListServlet?curPage=${pageBean.pageCnt }&maxSize=${pageBean.maxSize}">尾页</a>
   <br/> <!-- 第2种 -->
   <a href="javascript:toPage(1,${pageBean.maxSize})">首页</a>
   <a href="javascript:toPage(${pageBean.prePage },${pageBean.maxSize})">上页</a>
   <a href="javascript:toPage(${pageBean.nextPage },${pageBean.maxSize})">下页</a>
   <a href="javascript:toPage(${pageBean.pageCnt },${pageBean.maxSize})">尾页</a>
   <br/>
  </body>
  
  <script type="text/javascript">
   function toPage(curPage,maxSize){
   		var hid=document.getElementById("flag");
   		var flag=hid.value;
   		//更改flag值
   		hid.value="search";
   		flag=hid.value;
   		var path="${pageContext.request.contextPath }/ListServlet?curPage="+curPage+"&maxSize="+maxSize+"&flag="+flag;
   		window.location=path;
   }
  
  </script>
</html>

15. listCondition.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%request.setCharacterEncoding("UTF-8"); %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  
  <body>
   <form name="form1" action="${pageContext.request.contextPath }/ListConditionServlet" method="post" >
   <table border="1">
   <!-- 标志位 若为search，表示 点击的是搜索 若值为page,点击的是上一页-->
  <input type="hidden" name="flag" id="flag" value="search"/>
  <tr>
   <td>学生姓名</td>
   <td><input type="text" id="cname" name="cname" value="${searchStudent.cname}">
      <input type="hidden" id="old_cname" name="old_cname" value="${searchStudent.cname}">
   </td>
  </tr>
   
   <tr>
   <td>jobName</td>
   <td><input type="text" id="jobname" name="jobname" value="${searchStudent.major}">
      <input type="hidden" id="old_jobname" name="old_jobname" value="${searchStudent.major}">
   </td>
  </tr>
  <tr>
  <td> </td>
  <td><input type="button" value="搜索" onclick="toSearch(1,${pageBean.maxSize})"></td>
  </tr>
   </table>  
   </form>
   
   <table border="1">
   <tr>
     <th>编号</th>
     <th>姓名</th>
     <th>性别</th>
     <th>专业</th>  
   </tr>
   
   <c:forEach items="${listStudent}" var="student">
   <tr>
     <td>${student.id }</td>
      <td>${student.username }</td>
       <td>${student.sex}</td>
        <td>${student.major }</td>
   </tr>
   </c:forEach>
   </table>
  
   共有${pageBean.recordCnt }条记录 共${pageBean.pageCnt }页 当前是${pageBean.curPage }页
   <!-- 第一种 -->
   <a href="${pageContext.request.contextPath }/ListConditionServlet?curPage=1&maxSize=${pageBean.maxSize}">首页</a>
   <a href="${pageContext.request.contextPath }/ListConditionServlet?curPage=${pageBean.prePage }&maxSize=${pageBean.maxSize}">上页</a>
   <a href="${pageContext.request.contextPath }/ListConditionServlet?curPage=${pageBean.nextPage }&maxSize=${pageBean.maxSize}">下页</a>
   <a href="${pageContext.request.contextPath }/ListConditionServlet?curPage=${pageBean.pageCnt }&maxSize=${pageBean.maxSize}">尾页</a>
   <br/> <!-- 第2种 -->
   <a href="javascript:toPage(1,${pageBean.maxSize})">首页</a>
   <a href="javascript:toPage(${pageBean.prePage },${pageBean.maxSize})">上页</a>
   <a href="javascript:toPage(${pageBean.nextPage },${pageBean.maxSize})">下页</a>
   <a href="javascript:toPage(${pageBean.pageCnt },${pageBean.maxSize})">尾页</a>
   <br/>
  </body>
  
  <script type="text/javascript">
   function toPage(curPage,maxSize){
   		//更改flag值
   		/*document.getElementById("flag").value="page";
   		var path="${pageContext.request.contextPath }/ListConditionServlet?curPage="+curPage+"&maxSize="+maxSize;
   		window.location=path;*/
   		document.getElementById("flag").value="page";
   		var action=document.forms[0].action;
   		action=action+"?curPage="+curPage+"&maxSize="+maxSize;
   		document.forms[0].action=action;
   		document.forms[0].submit();
   }
   function toSearch(curpage,maxSize){
   document.getElementById("flag").value="search";
      document.forms[0].submit();
   }
  </script>
</html>