<%@ page contentType="text/html; charset=gb2312"%>
<%@ page import="java.sql.*"%>
<%@ page language="java"%>
<html>
<head>
<title>分页显示</title>
</head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"><body>
<center>
<font size="5" color="#003399">分页显示</font>
</center>
<br>
<hr>
<br>
<center>
<%
int PageSize=3;
int ShowPage=1;
int RowCount=0;
int PageCount=0;
Connection con=null;
Statement stmt=null;
ResultSet rs=null;
///public void jspInit()
//{
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:bookdb");
stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=stmt.executeQuery("select * from book");
rs.last();
RowCount=rs.getRow();
PageCount=((RowCount%PageSize)==0 ? (RowCount/PageSize):(RowCount/PageSize)+1);
}
catch(Exception ex)
{
System.out.println(ex.toString());
}
//}
//public void jsDestroy()
//{
try
{
rs.close();
stmt.close();
con.close();
}
catch(Exception ex)
{
System.out.println(ex.toString());
}
//}
%>
<%
String ToPage=request.getParameter("ToPage");
//判断是否可以正确取得topage参数
if(ToPage!=null)
{
//取得指定显示的分页页数
ShowPage=Integer.parseInt(ToPage);
//如果大于总页数,则显示最后一页
if(ShowPage>PageCount)
{
ShowPage=PageCount;
}
else if(ShowPage<=0)
{
ShowPage=1;
}
}
rs.absolute((ShowPage-1) * PageSize+1);
%>
<h3>当前在第<font size =4 color=red>
<%=ShowPage%></font>页,共
<font size="4" color="#6600FF"><%=PageCount%></font>页
</h3>
<br>
<%
for (int i=1;i<=PageSize;i++)
{
%>
<table border=1 bordercolor=royalblue bgcolor=lightblue>
<tr>
<td bgcolor=lightyellow width=100>
<b>书籍编号</b>
</td>
<td width=100>
<b><%=rs.getString("BookID")%></b>
</td>
<td bgcolor=lightyellow width=100>
<b>出版日期</d>
</td>
<td width=100>
<b><%=rs.getString("PDate")%></b>
</td>
<td bgcolor=lightyellow width=100>
<b>总页数</d>
</td>
<td width=100>
<b><%=rs.getString("Pages")%></b>
</td>
<td bgcolor=lightyellow width=100>
<b>价格</d>
</td>
<td width=100>
<b><%=rs.getString("Price")%></b>
</td>
</tr>
<tr>
<td bgcolor=lightyellow><b>书籍名称</b></td>
<td colspan=5 width=500><b><%=rs.getString("Title")%></b></td>
<td bgcolor=lightyellow><b>作者</b></td>
<td width=100><b><%=rs.getString("Author")%></b></td>
</tr>
<tr>
<td bgcolor=lightyellow><b>备注</b></td>
<td colspan=7 width=700><b><=rs.getString("BookMemo")%></b></td>
</tr>
</table><br>
<%
if(!rs.next())
break;
}
%>
<table width="560">
<tr>
<%
if(ShowPage!=1)
{
%>
<td width=150>
<a href=pages.jsp?ToPage=<%=1%>>到第一页</a>
</td>
<td width=150>
<a href=pages.jsp?ToPage=<%=ShowPage-1%>>到第上一页</a>
</td>
<%
}
if(ShowPage!=PageCount)
{
%>
<td width=150>
<a href=pages.jsp?ToPage=<%=ShowPage+1%>>到第下一页</a>
</td>
<td width=150>
<a href=pages.jsp?ToPage=<%=PageCount%>>到第最后一页</a>
</td>
<%
}
%>
<td width="150">
<form action=pages.jsp method=post>
到
<input type="text" name="ToPage" style="height:25px;width:40px" values=<%=ShowPage%>>
页
</from></table>
</center>
</body>
</html>
org.apache.jasper.JasperException: Exception in JSP: /pages.jsp:9491: <b>书籍编号</b>
92: </td>
93: <td width=100>
94: <b><%=rs.getString("BookID")%></b>
95: </td>
96: <td bgcolor=lightyellow width=100>
97: <b>出版日期</d>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NullPointerException
org.apache.jsp.pages_jsp._jspService(pages_jsp.java:144)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
<%@ page import="java.sql.*"%>
<%@ page language="java"%>
<html>
<head>
<title>分页显示</title>
</head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"><body>
<center>
<font size="5" color="#003399">分页显示</font>
</center>
<br>
<hr>
<br>
<center>
<%
int PageSize=3;
int ShowPage=1;
int RowCount=0;
int PageCount=0;
Connection con=null;
Statement stmt=null;
ResultSet rs=null;
///public void jspInit()
//{
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:bookdb");
stmt=con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=stmt.executeQuery("select * from book");
rs.last();
RowCount=rs.getRow();
PageCount=((RowCount%PageSize)==0 ? (RowCount/PageSize):(RowCount/PageSize)+1);
}
catch(Exception ex)
{
System.out.println(ex.toString());
}
//}
//public void jsDestroy()
//{
try
{
rs.close();
stmt.close();
con.close();
}
catch(Exception ex)
{
System.out.println(ex.toString());
}
//}
%>
<%
String ToPage=request.getParameter("ToPage");
//判断是否可以正确取得topage参数
if(ToPage!=null)
{
//取得指定显示的分页页数
ShowPage=Integer.parseInt(ToPage);
//如果大于总页数,则显示最后一页
if(ShowPage>PageCount)
{
ShowPage=PageCount;
}
else if(ShowPage<=0)
{
ShowPage=1;
}
}
rs.absolute((ShowPage-1) * PageSize+1);
%>
<h3>当前在第<font size =4 color=red>
<%=ShowPage%></font>页,共
<font size="4" color="#6600FF"><%=PageCount%></font>页
</h3>
<br>
<%
for (int i=1;i<=PageSize;i++)
{
%>
<table border=1 bordercolor=royalblue bgcolor=lightblue>
<tr>
<td bgcolor=lightyellow width=100>
<b>书籍编号</b>
</td>
<td width=100>
<b><%=rs.getString("BookID")%></b>
</td>
<td bgcolor=lightyellow width=100>
<b>出版日期</d>
</td>
<td width=100>
<b><%=rs.getString("PDate")%></b>
</td>
<td bgcolor=lightyellow width=100>
<b>总页数</d>
</td>
<td width=100>
<b><%=rs.getString("Pages")%></b>
</td>
<td bgcolor=lightyellow width=100>
<b>价格</d>
</td>
<td width=100>
<b><%=rs.getString("Price")%></b>
</td>
</tr>
<tr>
<td bgcolor=lightyellow><b>书籍名称</b></td>
<td colspan=5 width=500><b><%=rs.getString("Title")%></b></td>
<td bgcolor=lightyellow><b>作者</b></td>
<td width=100><b><%=rs.getString("Author")%></b></td>
</tr>
<tr>
<td bgcolor=lightyellow><b>备注</b></td>
<td colspan=7 width=700><b><=rs.getString("BookMemo")%></b></td>
</tr>
</table><br>
<%
if(!rs.next())
break;
}
%>
<table width="560">
<tr>
<%
if(ShowPage!=1)
{
%>
<td width=150>
<a href=pages.jsp?ToPage=<%=1%>>到第一页</a>
</td>
<td width=150>
<a href=pages.jsp?ToPage=<%=ShowPage-1%>>到第上一页</a>
</td>
<%
}
if(ShowPage!=PageCount)
{
%>
<td width=150>
<a href=pages.jsp?ToPage=<%=ShowPage+1%>>到第下一页</a>
</td>
<td width=150>
<a href=pages.jsp?ToPage=<%=PageCount%>>到第最后一页</a>
</td>
<%
}
%>
<td width="150">
<form action=pages.jsp method=post>
到
<input type="text" name="ToPage" style="height:25px;width:40px" values=<%=ShowPage%>>
页
</from></table>
</center>
</body>
</html>
org.apache.jasper.JasperException: Exception in JSP: /pages.jsp:9491: <b>书籍编号</b>
92: </td>
93: <td width=100>
94: <b><%=rs.getString("BookID")%></b>
95: </td>
96: <td bgcolor=lightyellow width=100>
97: <b>出版日期</d>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:395)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NullPointerException
org.apache.jsp.pages_jsp._jspService(pages_jsp.java:144)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
package jdbcjsp;import java.sql.*;public class conndb {
private Connection con;
private ResultSet rs;
/**
* getConnection
*
* @return Connection
* @throws SQLException
*/
public static Connection getConnection() throws SQLException {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch (ClassNotFoundException ex) {
ex.printStackTrace();
return null;
}
return DriverManager.getConnection("jdbc:Oracle:thin:@192.168.0.1:1521:QZJACLOE",
"test", "test");
}/**
* executeQuery
*
* @param sql String
* @return ResultSet
*/
public ResultSet executeQuery(String sql) {
try {
con = conndb.getConnection();
Statement statement = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = statement.executeQuery(sql);
}
catch (SQLException ex) {
ex.printStackTrace();
}
return rs;
}/**
* executeUpdate
*
* @param sql String
* @return int
*/
public int executeUpdate(String sql) {
int count = 0;
Statement stmt = null;
try {
con = conndb.getConnection();
stmt = con.createStatement();
count = stmt.executeUpdate(sql);
}
catch (SQLException ex) {}
finally {
try {
if (stmt != null)
stmt.close();
if (con != null)
con.close();
}
catch (SQLException ex) {
System.err.println(ex);
}
}
return count;
}/**
* freeRs
*
* @param rs ResultSet
*/
public void freeRs(ResultSet rs) {
try {
if (rs != null) {
rs.close();
con.close();
}
}
catch (Exception e) {
e.printStackTrace();
}
}public conndb() {
}
}//////分页的逻辑类..............<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.sql.*,jdbcjsp.*" %>
<jsp:usebean id="pagebean" scope="session" class="jdbcjsp.Pagebean"></jsp:useBean>
<jsp:usebean id="databean" scope="session" class="jdbcjsp.conndb"></jsp:useBean>
<html>
<head>
<title>
usepage
</title>
</head>
<body bgcolor="#ffffff">
<%
ResultSet rs;
String sql="select * from ps_shop";
rs=databean.executeQuery(sql);
String pages=request.getParameter("dispage");
try{
rs.last();
int countRecord=rs.getRow();
int countPageRecord=5;
if(pages==null||(pages.trim()).length()==0)
pagebean.setAll(countRecord,countPageRecord);
else {
try{
pagebean.setCurrentPage(Integer.parseInt(pages));
}catch(Exception e){
out.print("参数不正确!");
}
}
int currentRecord=(pagebean.getCurrentPage()-1)*pagebean.getSizePage();
if(currentRecord==0)
rs.beforeFirst();
else
rs.absolute(currentRecord); out.print("<table style="'font-size:10pt'">");
out.print("<tr><td colspan="5" align="center">用户数据</td></tr>");
out.print("<tr>");
out.print("<td>"+"shopID");
out.print("<td>"+"name");
out.print("<td>"+"addr");
out.print("<td>"+"manger");
out.print("<td>"+"phone");
out.print("</tr>");
int i=0;
while(rs.next()){
out.print("<tr>");
out.print("<td>"+rs.getString(1)+"</td>");
out.print("<td>"+rs.getString(2)+"</td>");
out.print("<td>"+rs.getString(3)+"</td>");
out.print("<td>"+rs.getString(4)+"</td>");
out.print("<td>"+rs.getString(5)+"</td>");
out.print("</tr>");
i++;
if(i>=pagebean.getSizePage())
break;
}
out.print("<tr><td colspan="5" align="center">");
out.print("共"+pagebean.getCountRecord()+"条记录,共"+pagebean.getCountPage()+
"页,当前第"+pagebean.getCurrentPage()+"页,每页"+pagebean.getSizePage()+"条记录,");
if(pagebean.getCurrentPage()==1)
;
else{
out.print("<a href="usepage.jsp?dispage="1">首页</a>");
out.print("<a href="usepage.jsp?dispage="">上一页</a>");
}
if(pagebean.getCurrentPage()==pagebean.getCountPage())
;
else{
out.print("<a href="usepage.jsp?dispage="">下一页</a>");
out.print("<a href="usepage.jsp?dispage="">末页</a>");
}
out.print("</td><tr>");
out.print("</table>");
databean.freeRs(rs);
}catch(SQLException ex){
System.out.println(ex.toString());
}
%>
</body>
</html>
private Connection con;
private ResultSet rs;
/**
* getConnection
*
* @return Connection
* @throws SQLException
*/
public static Connection getConnection() throws SQLException {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch (ClassNotFoundException ex) {
ex.printStackTrace();
return null;
}
return DriverManager.getConnection("jdbc:Oracle:thin:@192.168.0.1:1521:qzjackie",
"test", "test");
} /**
* executeQuery
*
* @param sql String
* @return ResultSet
*/
public ResultSet executeQuery(String sql) {
try {
con = conndb.getConnection();
Statement statement = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = statement.executeQuery(sql);
}
catch (SQLException ex) {
ex.printStackTrace();
}
return rs;
} /**
* executeUpdate
*
* @param sql String
* @return int
*/
public int executeUpdate(String sql) {
int count = 0;
Statement stmt = null;
try {
con = conndb.getConnection();
stmt = con.createStatement();
count = stmt.executeUpdate(sql);
}
catch (SQLException ex) { }
finally {
try {
if (stmt != null)
stmt.close();
if (con != null)
con.close();
}
catch (SQLException ex) {
System.err.println(ex);
}
}
return count;
} /**
* freeRs
*
* @param rs ResultSet
*/
public void freeRs(ResultSet rs) {
try {
if (rs != null) {
rs.close();
con.close();
}
}
catch (Exception e) {
e.printStackTrace();
}
} public conndb() {
}
}
package jdbcjsp;public class Pagebean {
///当前页数,总记录条数,总页数,每页记录条数
private int currentPage,countRecord,countPage,sizePage; /**
* setAll
*
* @param _countResord总记录条数 int
* @param _sizePage每页记录条数 int
*/
public void setAll(int _countResord,int _sizePage){
countRecord=_countResord;
sizePage=_sizePage;
if(countRecord%sizePage==0)
countPage=countRecord/sizePage;
else
countPage=countRecord/sizePage+1;
currentPage=1;
} /**
* getCurrentPage
*
* @return int 当前页数
*/
public int getCurrentPage(){
return currentPage;
} /**
* getCountPage
*
* @return int 总页数
*/
public int getCountPage(){
return countPage;
} /**
* getCountRecord
*
* @return long 总记录条数
*/
public long getCountRecord(){
return countRecord;
} /**
* getSizePage
*
* @return int 每页记录条数
*/
public int getSizePage(){
return sizePage;
} /**
* setCurrentPage
*
* @param currentPage int 当前页数
*/
public void setCurrentPage(int currentPage){
this.currentPage=currentPage;
}
public Pagebean() {
}
}
<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.sql.*,jdbcjsp.*" %>
<jsp:useBean id="pagebean" scope="session" class="jdbcjsp.Pagebean"></jsp:useBean>
<jsp:useBean id="databean" scope="session" class="jdbcjsp.conndb"></jsp:useBean>
<html>
<head>
<title>
usepage
</title>
</head>
<body bgcolor="#ffffff">
<%
ResultSet rs;
String sql="select * from ps_shop";
rs=databean.executeQuery(sql);
String pages=request.getParameter("dispage");
try{
rs.last();
int countRecord=rs.getRow();
int countPageRecord=5;
if(pages==null||(pages.trim()).length()==0)
pagebean.setAll(countRecord,countPageRecord);
else {
try{
pagebean.setCurrentPage(Integer.parseInt(pages));
}catch(Exception e){
out.print("参数不正确!");
}
}
int currentRecord=(pagebean.getCurrentPage()-1)*pagebean.getSizePage();
if(currentRecord==0)
rs.beforeFirst();
else
rs.absolute(currentRecord); out.print("<Table Border style='font-size:10pt'>");
out.print("<tr><td colspan=5 align=center>用户数据</td></tr>");
out.print("<tr>");
out.print("<td>"+"shopID");
out.print("<td>"+"name");
out.print("<td>"+"addr");
out.print("<td>"+"manger");
out.print("<td>"+"phone");
out.print("</tr>");
int i=0;
while(rs.next()){
out.print("<tr>");
out.print("<td>"+rs.getString(1)+"</td>");
out.print("<td>"+rs.getString(2)+"</td>");
out.print("<td>"+rs.getString(3)+"</td>");
out.print("<td>"+rs.getString(4)+"</td>");
out.print("<td>"+rs.getString(5)+"</td>");
out.print("</tr>");
i++;
if(i>=pagebean.getSizePage())
break;
}
out.print("<tr><td colspan=5 align=center>");
out.print("共"+pagebean.getCountRecord()+"条记录,共"+pagebean.getCountPage()+
"页,当前第"+pagebean.getCurrentPage()+"页,每页"+pagebean.getSizePage()+"条记录,");
if(pagebean.getCurrentPage()==1)
;
else{
out.print("<a href=usepage.jsp?dispage=1>首页</a>");
out.print("<a href=usepage.jsp?dispage="+(pagebean.getCurrentPage()-1)+">上一页</a>");
}
if(pagebean.getCurrentPage()==pagebean.getCountPage())
;
else{
out.print("<a href=usepage.jsp?dispage="+(pagebean.getCurrentPage()+1)+">下一页</a>");
out.print("<a href=usepage.jsp?dispage="+pagebean.getCountPage()+">末页</a>");
}
out.print("</td><tr>");
out.print("</table>");
databean.freeRs(rs);
}catch(SQLException ex){
System.out.println(ex.toString());
}
%>
</body>
</html>我的博客http://qzjackie.blogspot.com
import java.sql.*;public class Bean1 {
private int curPage = 1;
private int maxPage;
private int maxRow;
public Vector v; public Bean1() throws Exception {
this.setBean1();
} public void setCurPage(int curPage) {
this.curPage = curPage;
} public void setMaxPage(int maxPage) {
this.maxPage = maxPage;
} public void setMaxRow(int maxRow) {
this.maxRow = maxRow;
} public int getCurPage() {
return curPage;
} public int getMaxPage() {
return maxPage;
} public int getMaxRow() {
return maxRow;
} public Bean1 getResult(String page) throws Exception {
try {
Bean1 bb = new Bean1();
Vector vv = new Vector();
int pageNum = Integer.parseInt(page);
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
Connection con = DriverManager.getConnection("jdbc:odbc:aa", "", "");
Statement sm = con.createStatement();
String strsql = "select top " + pageNum * 4 + " * from jobs";
ResultSet rs = sm.executeQuery(strsql);
int i = 1;
while (rs.next()) {
if (i > (pageNum - 1) * 4) {
Object[] obj = new Object[4];
obj[0] = rs.getInt(1);
obj[1] = rs.getString(2);
obj[2] = rs.getInt(3);
obj[3] = rs.getInt(4);
vv.add(obj);
}
i++;
}
rs.close();
sm.close();
con.close(); bb.setCurPage(pageNum);
bb.v = vv;
return bb;
} catch (Exception e) {
e.printStackTrace();
throw e;
}
}
public int setCount() throws Exception {
int c = 0;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
Connection con = DriverManager.getConnection("jdbc:odbc:aa", "", "");
Statement sm = con.createStatement();
String sql = "select count(*) from jobs";
ResultSet rs = sm.executeQuery(sql);
rs.next();
c = rs.getInt(1);
rs.close();
sm.close();
con.close();
return c; } public void setBean1() throws Exception {
this.maxRow = this.setCount(); if (this.maxRow % 4 == 0) {
this.maxPage = this.maxRow / 4;
} else {
this.maxPage = this.maxRow / 4 + 1;
}
}
}
import javax.servlet.http.*;
import java.io.*;
import java.util.*;public class Servlet1 extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK"; //Initialize global variables
public void init() throws ServletException {
} //Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
try {
Bean1 b1 = new Bean1();
Bean1 bean0 = b1.getResult(request.getParameter("jumppage"));
request.setAttribute("bean0", bean0);
} catch (Exception e) {
e.printStackTrace();
} javax.servlet.RequestDispatcher dis = request.getRequestDispatcher("jsp1.jsp");
dis.forward(request,response); } //Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
} //Clean up resources
public void destroy() {
}
}
<jsp:useBean id="bean0" scope="request" class="jsppage.Bean1"/>
<script type="" language="JavaScript">
<!--
function jumping()
{
document.pageform.submit();
return;
}
function gotoPage(pagenum)
{
document.pageform.jumppage.value=pagenum;
document.pageform.submit();
return;
}
-->
</script>
<html>
<head>
<title>jsp1</title>
</head>
<body bgcolor="#ffffff">
<table border="1">
<tr>
<th>ID:</th>
<th>Desc:</th>
<th>Min:</th>
<th>Max:</th>
</tr>
<%
String s = String.valueOf(bean0.getCurPage());
Vector v3 = bean0.getResult(s).v;
Enumeration e = v3.elements();
while(e.hasMoreElements())
{
Object [] obj = (Object [])e.nextElement();
%>
<tr>
<td><%=obj[0] %></td>
<td><%=obj[1] %></td>
<td><%=obj[2] %></td>
<td><%=obj[3] %></td>
</tr>
<%} %>
</table>
<%if(bean0.getMaxPage()!=1) {%>
<form action="servlet1" method="POST" name="pageform">
每页4行 共<%=bean0.getMaxRow() %>行 第<%=bean0.getCurPage() %>页 共<%=bean0.getMaxPage() %>页 <br />
<%
if(bean0.getCurPage()==1)
{
out.print("首页 上一页");
}
else{
%>
<a href="javascript:gotoPage(1)">首页</a>
<a href="javascript:gotoPage(<%=bean0.getCurPage()-1 %>)">上一页</a>
<%} %>
<%
if(bean0.getCurPage()==bean0.getMaxPage())
{
out.print("下一页 尾页");
}
else{
%>
<a href="javascript:gotoPage(<%=bean0.getCurPage()+1 %>)">下一页</a>
<a href="javascript:gotoPage(<%=bean0.getMaxPage() %>)">尾页</a>
<%} %>
转到第
<select name="jumppage" onchange="jumping()">
<%
for(int i=1;i<=bean0.getMaxPage();i++)
{
if(i==bean0.getCurPage())
{%>
<option value="<%=i%>" selected="selected"><%=i %></option>
<%}else{ %>
<option value="<%=i%>" ><%=i %></option>
<%}} %>
</select>
</form>
<%} %>
</body>
</html>
然后用这股类生成一个BookBean[] books=new BookBean[4]//比如是4本书.然后将这股类存在session里面 具体我好像写过这么个程序 我帮你找找看我的代码不知道对你有帮助不
public class getPage implements LogIF
{
private String nextPage;
public getPage(String next)
{
nextPage=next;
} @SuppressWarnings("unchecked")
public String exe(HttpServletRequest req)
{
//用page来存储第几页
HttpSession session=req.getSession();
int page=0;
if(req.getParameter("page")!=null)
{
page=Integer.parseInt(req.getParameter("page").toString());
}
ArrayList<BookBean> all=(ArrayList)session.getAttribute("books");
int count=all.size();
int pages=count/4;
//System.out.println("数目:"+count);
//System.out.println("页数:"+pages);
BookBean[] book=new BookBean[1000];
//计算出3共又多少页
//记录当前页数
book=(BookBean[])all.toArray(book);
BookBean[] tmpBooks=new BookBean[4];
for(int i=0;i<4;i++)
{
int index=page*4+i;
if(index<count)
{
//System.out.println("书号"+(index));
tmpBooks[i]=book[page*4+i];
}
else
{
BookBean tmpb=new BookBean();
tmpb.setAuthor("无");
tmpb.setBID(0);
tmpb.setDesc("本书暂不存在");
tmpb.setName("空");
tmpb.setPrice(0);
tmpb.setPrice_tmp(0);
tmpb.setType(0);
tmpBooks[i]=tmpb;
//System.out.print(tmpBooks.length);
}
}
session.setAttribute("book4", tmpBooks);
session.setAttribute("pages", pages);
return nextPage;
}}这个是我以前的 你到时候在页面中只要用selvert来调用这股类就像 我可以给你一个比较完整的书店的demo要的话联系[email protected] 我怕自己找不到这个页面 呵呵
[email protected]
谢谢了.