java商品分页代码 java分页实现原理

JAVA中分页怎么写，

body

当前搜索条件:

c:if test="${cond==null}"空/c:if

c:if test="${cond!=null}"${cond}/c:if

form action="page" method="post"

input type="text" name="name" /

input type="submit" value="按名字模糊搜索" /

/form

table

tr

td商品编号/td

td类型编号/td

td商品名称/td

td商品说明/td

td商品图片/td

td商品日期/td

td详细图片/td

/tr

!-- 循环遍历ps对象中的ListAddress集合 --

c:forEach items="${sps.infos}" var="ad"

tr

td${ad.shopId}/td

td${ad.typeId}/td

td${ad.shopName}/td

td${ad.shopSay}/td

td${ad.shopPrice}/td

td${ad.defaultPic}/td

td${ad.upMetailDate}/td

/tr

/c:forEach

/table

a href="page?cp=1"首页/a

a href="page?cp=${(sps.currentPage-1)=1?1:(sps.currentPage-1)}"上页/a

a href="page?cp=${(sps.currentPage+1)=(sps.countPage)?(sps.countPage):(sps.currentPage+1)}"下页/a

a href="page?cp=${sps.countPage}"末页/a

/body

这是我之前写的DEMO，对应的把属性改成你写好的ACTION就可以了

相关问答

Q1: 谁能给我个完整的java 分页代码 谢谢了

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.util.Enumeration;

import javax.servlet.http.HttpServletRequest;

import com.lqh.dao.db.DBCon;

public class PageDAO {

public static final String Text = "text";

public static final String Image = "image";

public static final String BbsText = "bbstext";

public static final String BbsImage = "bbsimage";

private HttpServletRequest request;

private int currentpage = 1; // 当前是第几页

private int pagecount = 0; // 一共有多少页

private int rscount = 0; // 一共有多少行

private int pagesize = 10; // 每页有多少行[默认为20行]

public PageDAO(HttpServletRequest request) {

this.request = request;

}

public int getCurrentpage() {

return currentpage;

}

public void setCurrentpage(int currentpage) {

this.currentpage = currentpage;

}

public int getPagecount() {

return pagecount;

}

public void setPagecount(int pagecount) {

this.pagecount = pagecount;

}

public int getPagesize() {

return pagesize;

}

public void setPagesize(int pagesize) {

this.pagesize = pagesize;

}

public int getRscount() {

return rscount;

}

public void setRscount(int rscount) {

this.rscount = rscount;

}

/**

* 传入SQL语句获取总记录数

*/

public int getRsCountForRs(String sql) {

Connection conn = null;

PreparedStatement ps = null;

ResultSet rs = null;

DBCon dbcon=new DBCon();

try {

conn = dbcon.getConn();

ps = conn.prepareStatement(sql);

rs = ps.executeQuery();

if (rs.next()) {

rs.last();

this.rscount = rs.getRow();

} else {

this.rscount = 0;

}

} catch (Exception ex) {

ex.printStackTrace();

this.rscount = 0;

} finally {

dbcon.tryClose(rs, ps, conn);

}

return this.rscount;

}

public int getRsCountForSQL(String sql) {

Connection conn = null;

PreparedStatement ps = null;

ResultSet rs = null;

DBCon dbcon=new DBCon();

try {

conn = dbcon.getConn();

ps = conn.prepareStatement(sql);

rs = ps.executeQuery();

if (rs.next()) {

this.rscount = rs.getInt("rscount");

} else {

this.rscount = 0;

}

} catch (Exception ex) {

ex.printStackTrace();

this.rscount = 0;

} finally {

dbcon.tryClose(rs, ps, conn);

}

return this.rscount;

}

/**

* 获取总页数

*

* @return int

*/

public int getPageCount() {

try {

this.pagecount = ((this.rscount - 1) / this.pagesize) + 1;

} catch (Exception ex) {

this.pagecount = 0;

}

return this.pagecount;

}

/**

* 获取当前页码的设置

*

* @return int

*/

public int getCurrentPage() {

try {

if (this.request.getParameter("currentpage") != null

Integer.parseInt(this.request

.getParameter("currentpage")) 1) {

this.currentpage = Integer.parseInt(this.request

.getParameter("currentpage"));

} else {

this.currentpage = 1;

}

} catch (Exception ex) {

this.currentpage = 1;

}

return this.currentpage;

}

/**

* 分页工具条

*

* @param fileName

* String

* @return String

*/

public String pagetool(String flag) {

StringBuffer str = new StringBuffer();

String url = this.getParamUrl();

int ProPage = this.currentpage - 1;

int Nextpage = this.currentpage + 1;

// 文字的分页

if (flag.equals(PageDAO.Text)) {

str.append("form method='post' name='pageform' action=''");

str

.append("table style='color: windowframe' width='100%' border='0' cellspacing='0' cellpadding='0'");

str.append("tr");

str.append("td width='20%'/td");

str.append("td height='26'");

str.append("共有记录" + this.rscount + "条 ");

str.append("共" + this.pagecount + "页 ");

str.append("每页" + this.pagesize + "记录 ");

str.append("现在" + this.currentpage + "/" + this.pagecount + "页");

str.append("/tdtd");

if (this.currentpage 1) {

str.append("a href='" + url + "currentpage=1'首页/a");

str.append(" ");

str.append("a href='" + url + "currentpage=" + ProPage

+ "'上一页/a");

str.append(" ");

} else {

str.append("首页");

str.append(" ");

str.append("上一页");

str.append(" ");

}

if (this.currentpage this.pagecount) {

str.append("a href='" + url + "currentpage=" + Nextpage

+ "'下一页/a");

str.append(" ");

} else {

str.append("下一页");

str.append(" ");

}

if (this.pagecount 1 this.currentpage != this.pagecount) {

str.append("a href='" + url + "currentpage=" + pagecount

+ "'尾页/a");

str.append(" ");

} else {

str.append("尾页");

str.append(" ");

}

str.append("转到");

str

.append("select name='currentpage' onchange='javascript:ChangePage(this.value);'");

for (int j = 1; j = pagecount; j++) {

str.append("option value='" + j + "'");

if (currentpage == j) {

str.append("selected");

}

str.append("");

str.append("" + j + "");

str.append("/option");

}

str.append("/select页");

str.append("/tdtd width='3%' /td/tr/table");

str.append("script language='javascript'");

str.append("function ChangePage(testpage){");

str.append("document.pageform.action='" + url

+ "currentpage='+testpage+'';");

str.append("document.pageform.submit();");

str.append("}");

str.append("/script");

str.append("/form");

} else if (flag.equals(PageDAO.Image)) {

/**

* 图片的分页

*/

} else if (flag.equals(PageDAO.BbsText)) {

/**

* 论坛形式的分页[直接以数字方式体现]

*/

str

.append("table width='100%' border='0' cellspacing='0' cellpadding='0'");

str.append("tr");

str.append("td width='3%' /td");

str.append("td height='26'");

str.append("记录" + this.rscount + "条  ");

str.append("共" + this.pagecount + "页  ");

str.append("每页" + this.pagesize + "记录  ");

str.append("现在" + this.currentpage + "/" + this.pagecount + "页");

str.append("/tdtd");

// 设定是否有首页的链接

if (this.currentpage 1) {

str.append("a href='" + url + "currentpage=1'首页/a");

str.append("  ");

}

// 设定是否有上一页的链接

if (this.currentpage 1) {

str.append("a href='" + url + "currentpage=" + ProPage

+ "'上一页/a");

str.append("   ");

}

// 如果总页数只有10的话

if (this.pagecount = 10) {

for (int i = 1; i = this.pagecount; i++) {

if (this.currentpage == i) {

str.append("font color=red[" + i

+ "]/font  ");

} else {

str.append("a href='" + url + "currentpage=" + i

+ "'" + i + "/a  ");

}

}

} else {

// 说明总数有超过10页

// 制定特环的开始页和结束页

int endPage = this.currentpage + 4;

if (endPage this.pagecount) {

endPage = this.pagecount;

}

int startPage = 0;

if (this.pagecount = 8 this.currentpage = 8) {

startPage = this.currentpage - 5;

} else {

// 表示从第一页开始算

startPage = 1;

}

System.out.println(startPage);

System.out.println(endPage);

for (int i = startPage; i = endPage; i++) {

if (this.currentpage == i) {

str.append("font color=red[" + i

+ "]/font  ");

} else {

str.append("a href='" + url + "currentpage=" + i

+ "'" + i + "/a  ");

}

}

}

// 设定是否有下一页的链接

if (this.currentpage this.pagecount) {

str.append("a href='" + url + "currentpage=" + Nextpage

+ "'下一页/a");

str.append("  ");

}

// 设定是否有尾页的链接

if (this.pagecount 1 this.currentpage != this.pagecount) {

str.append("a href='" + url + "currentpage=" + pagecount

+ "'尾页/a");

str.append("  ");

}

str.append("/tdtd width='3%' /td/tr/table");

} else if (flag.equals(PageDAO.BbsImage)) {

/**

* 论坛形式的分页[以图片的方式体现]

*/

// 设定分页显示的CSS

str.append("style");

str

.append("BODY {FONT-SIZE: 12px;FONT-FAMILY:宋体;WIDTH: 60%; PADDING-LEFT: 25px;}");

str

.append("DIV.meneame {PADDING-RIGHT: 3px; PADDING-LEFT: 3px; FONT-SIZE: 80%; PADDING-BOTTOM: 3px; MARGIN: 3px; COLOR: #ff6500; PADDING-TOP: 3px; TEXT-ALIGN: center}");

str

.append("DIV.meneame A {BORDER-RIGHT: #ff9600 1px solid; PADDING-RIGHT: 7px; BACKGROUND-POSITION: 50% bottom; BORDER-TOP: #ff9600 1px solid; PADDING-LEFT: 7px; BACKGROUND-IMAGE: url('"

+ this.request.getContextPath()

+ "/meneame.jpg'); PADDING-BOTTOM: 5px; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff9600 1px solid; TEXT-DECORATION: none}");

str

.append("DIV.meneame A:hover {BORDER-RIGHT: #ff9600 1px solid; BORDER-TOP: #ff9600 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: #ff9600 1px solid; COLOR: #ff6500; BORDER-BOTTOM: #ff9600 1px solid; BACKGROUND-COLOR: #ffc794}");

str

.append("DIV.meneame SPAN.current {BORDER-RIGHT: #ff6500 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ff6500 1px solid; PADDING-LEFT: 7px; FONT-WEIGHT: bold; PADDING-BOTTOM: 5px; BORDER-LEFT: #ff6500 1px solid; COLOR: #ff6500; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ff6500 1px solid; BACKGROUND-COLOR: #ffbe94}");

str

.append("DIV.meneame SPAN.disabled {BORDER-RIGHT: #ffe3c6 1px solid; PADDING-RIGHT: 7px; BORDER-TOP: #ffe3c6 1px solid; PADDING-LEFT: 7px; PADDING-BOTTOM: 5px; BORDER-LEFT: #ffe3c6 1px solid; COLOR: #ffe3c6; MARGIN-RIGHT: 3px; PADDING-TOP: 5px; BORDER-BOTTOM: #ffe3c6 1px solid}");

str.append("/style");

str.append("div class=\"meneame\"");

// 判定是否有上一页

if (this.currentpage 1) {

str.append("a href='" + url

+ "currentpage=1' hidefocus=\"true\"首页/a");

str.append("   ");

str.append("a href='" + url + "currentpage=" + ProPage

+ "' hidefocus=\"true\"上一页/a");

str.append("   ");

} else {

str.append("span class=\"disabled\"首页/span");

str.append("  ");

str.append("span class=\"disabled\"上一页/span");

str.append("  ");

}

// 显示中间的图片

if (this.pagecount = 10) {

for (int i = 1; i = this.pagecount; i++) {

if (this.currentpage == i) {

str.append("span class=\"current\"" + i + "/span");

} else {

str.append("a href='" + url + "currentpage=" + i

+ "' hidefocus=\"true\"" + i

+ "/a  ");

}

}

} else {

// 说明总数有超过10页

// 制定特环的开始页和结束页

int endPage = this.currentpage + 4;

if (endPage this.pagecount) {

endPage = this.pagecount;

}

int startPage = 0;

if (this.pagecount = 8 this.currentpage = 8) {

startPage = this.currentpage - 5;

} else {

// 表示从第一页开始算

startPage = 1;

}

System.out.println(startPage);

System.out.println(endPage);

for (int i = startPage; i = endPage; i++) {

if (this.currentpage == i) {

str.append("span class=\"current\"" + i + "/span");

} else {

str.append("a href='" + url + "currentpage=" + i

+ "' hidefocus=\"true\"" + i

+ "/a  ");

}

}

}

// 判断下一页和尾页

if (this.currentpage this.pagecount) {

if (this.currentpage this.pagecount - 10) {

str.append("...");

str.append("a href='" + url + "currentpage="

+ (this.pagecount - 1) + "' hidefocus=\"true\""

+ (this.pagecount - 1) + "/a  ");

str.append("a href='" + url + "currentpage="

+ this.pagecount + "' hidefocus=\"true\""

+ this.pagecount + "/a  ");

}

str.append("a href='" + url + "currentpage=" + Nextpage

+ "' hidefocus=\"true\"下一页/a");

str.append("  ");

} else {

str.append("span class=\"disabled\"下一页/span");

str.append("  ");

}

if (this.pagecount 1 this.currentpage != this.pagecount) {

str.append("a href='" + url + "currentpage=" + pagecount

+ "' hidefocus=\"true\"尾页/a");

str.append("  ");

} else {

str.append("span class=\"disabled\"尾页/span");

str.append("  ");

}

str.append("/div");

}

return str.toString();

}

public String getParamUrl() {

String url = "";

url = this.request.getRequestURI().toString();

if (url.indexOf("?") == -1) {

url = url + "?";

}

String totalParams = "";

Enumeration params = this.request.getParameterNames();// 得到所有参数名

while (params.hasMoreElements()) {

String tempName = params.nextElement().toString();

String tempValue = this.request.getParameter(tempName);

if (tempValue != null !tempValue.equals("")

!tempName.equals("currentpage")) {

if (totalParams.equals("")) {

totalParams = totalParams + tempName + "=" + tempValue;

} else {

totalParams = totalParams + "" + tempName + "="

+ tempValue;

}

}

}

String totalUrl = url + totalParams;

return totalUrl;

}

}

Q2: java分页显示代码,在页面有每页显示的条数pageSize和当前页pageNow两个参数要传递

a href="PagingServlet?pageNow=${pageNows}-1pageSize=

$(‘a’).click(function(){

var b="$("input").val();

return b;

});

"上一页/a，此处的a代表超链接，inut代表你的那个输入框，你最好给他们加上ID，然后代替掉他们

Q3: 谁能给我一个java分页标签的代码参考一下

下面的代码是纯jsp页面分页

也有java后台代码的分页，你如果想要的话就说。

%@ page contentType="text/html; charset=gb2312" %

%@ page language="java" %

%@ page import="java.sql.*" %

%

//驱动程序名，比较旧了，如果你用mysql5,自己改。

String driverName="org.gjt.mm.mysql.Driver";

String userName="root";//数据库用户名

String userPasswd="";//密码

String dbName="bookstore";//数据库名

String tableName="items"; //表名

//连接字符串

String url="jdbc:mysql://localhost/"+dbName+"?user="+userName+"password="+userPasswd;

Class.forName(driverName).newInstance();

Connection connection=DriverManager.getConnection(url);

Statement statement = connection.createStatement();

//每页显示记录数

int PageSize = 8;

int StartRow = 0; //开始显示记录的编号

int PageNo=0;//需要显示的页数

int CounterStart=0;//每页页码的初始值

int CounterEnd=0;//显示页码的最大值

int RecordCount=0;//总记录数;

int MaxPage=0;//总页数

int PrevStart=0;//前一页

int NextPage=0;//下一页

int LastRec=0;

int LastStartRecord=0;//最后一页开始显示记录的编号

//获取需要显示的页数，由用户提交

if(request.getParameter("PageNo")==null){ //如果为空，则表示第1页

if(StartRow == 0){

PageNo = StartRow + 1; //设定为1

}

}else{

PageNo = Integer.parseInt(request.getParameter("PageNo")); //获得用户提交的页数

StartRow = (PageNo - 1) * PageSize; //获得开始显示的记录编号

}

//设置显示页码的初始值

if(PageNo % PageSize == 0){

CounterStart = PageNo - (PageSize - 1);

}else{

CounterStart = PageNo - (PageNo % PageSize) + 1;

}

CounterEnd = CounterStart + (PageSize - 1);

%

html

head

title分页显示记录/title

link rel="stylesheet" href="style.css" type="text/css"

/head

%

//获取总记录数

ResultSet rs = statement.executeQuery("select count(*) from items" );

rs.next();

RecordCount = rs.getInt(1);

rs = statement.executeQuery("SELECT image_url,author,price,item_id FROM items ORDER BY item_id DESC LIMIT "

+StartRow+", "+PageSize);

//获取总页数

MaxPage = RecordCount % PageSize;

if(RecordCount % PageSize == 0){

MaxPage = RecordCount / PageSize;

}else{

MaxPage = RecordCount/PageSize+1;

}

%

body class="UsePageBg"

table width="100%" border="0" class="InternalHeader"

tr

td width="24%"font size=4分页显示记录/font/td

td width="76%"

font size=4%="总共"+RecordCount+"条记录 - 当前页："+PageNo+"/"+MaxPage %/font

/td

/tr

/table

br

table width="100%" border="0" class="NormalTableTwo"

tr

td class="InternalHeader"记录序号/td

td class="InternalHeader" 图像路径/td

td class="InternalHeader" 作者/td

td class="InternalHeader" 价格/td

td class="InternalHeader" 图书编号/td

/tr

%

int i = 1;

while (rs.next()) {

int bil = i + (PageNo-1)*PageSize;

%

tr

td class="NormalFieldTwo" %=bil %/td

td class="NormalFieldTwo" %=rs.getString(1)%/td

td class="NormalFieldTwo" %=rs.getString(2)%/td

td class="NormalFieldTwo" %=rs.getString(3)%/td

td class="NormalFieldTwo" %=rs.getString(4)%/td

/tr

%

i++;

}%

/table

br

table width="100%" border="0" class="InternalHeader"

tr

tddiv align="center"

%

out.print("font size=4");

//显示第一页或者前一页的链接

//如果当前页不是第1页，则显示第一页和前一页的链接

if(PageNo != 1){

PrevStart = PageNo - 1;

out.print("a href=TestPage.jsp?PageNo=1第一页 /a: ");

out.print("a href=TestPage.jsp?PageNo="+PrevStart+"前一页/a");

}

out.print("[");

//打印需要显示的页码

for(int c=CounterStart;c=CounterEnd;c++){

if(c MaxPage){

if(c == PageNo){

if(c %PageSize == 0){

out.print(c);

}else{

out.print(c+" ,");

}

}else if(c % PageSize == 0){

out.print("a href=TestPage.jsp?PageNo="+c+""+c+"/a");

}else{

out.print("a href=TestPage.jsp?PageNo="+c+""+c+"/a ,");

}

}else{

if(PageNo == MaxPage){

out.print(c);

break;

}else{

out.print("a href=TestPage.jsp?PageNo="+c+""+c+"/a");

break;

}

}

}

out.print("]");;

if(PageNo MaxPage){ //如果当前页不是最后一页，则显示下一页链接

NextPage = PageNo + 1;

out.print("a href=TestPage.jsp?PageNo="+NextPage+"下一页/a");

}

//同时如果当前页不是最后一页，要显示最后一页的链接

if(PageNo MaxPage){

LastRec = RecordCount % PageSize;

if(LastRec == 0){

LastStartRecord = RecordCount - PageSize;

}

else{

LastStartRecord = RecordCount - LastRec;

}

out.print(":");

out.print("a href=TestPage.jsp?PageNo="+MaxPage+"最后一页/a");

}

out.print("/font");

%

/div

/td

/tr

/table

%

rs.close();

statement.close();

connection.close();

%

/body

/html

Q4: 求java分页代码，急用！

package common.util;

import java.util.*;

public class PageController implements IPageModel {

private Collection model;

//数据总行数

private int totalRowCount = 0; //

//总页数

private int pageCount = 0;

//每页应显示的行数

private int maxPageRowCount = 0;

//当前页行数

private int currPageRowCount = 0;

//当前页号

private int currPageNum;

//默认构造

public PageController() {

super();

}

//传入模型

public PageController(Collection model) {

setPageController(model);

}

//设一个分页模型

public void setPageController(Collection model) {

this.model = model;

this.totalRowCount = model.size();

}

/**

* 总页数

* @return int

*/

public int getPageCount() {

return this.pageCount;

}

/**

* getPageContents

*

* @param intPageNum int

* @return Object

*/

public Object getPageContents(int intPageNum) {

//非法数据

if(intPageNum1){

intPageNum=1;

}

if(intPageNumpageCount){

intPageNum=pageCount;

}

//指定当前页

this.currPageNum=intPageNum;

int i = 0;

ArrayList arr = new ArrayList();

//如果是合法的范围

if (intPageNum 0 intPageNum = pageCount) {

//计算该页的开始号和结束号

int lfromrow = (intPageNum - 1) * maxPageRowCount;

arr = (ArrayList) getElementsAt(model, lfromrow, lfromrow + maxPageRowCount-1);

}

currPageNum=intPageNum;

return arr;

}

public Object getLastPage() {

return this.getPageContents(pageCount);

}

public Object getFirstPage() {

return this.getPageContents(0);

}

/**

* getCurrentPageRowsCount

*

* @return int

*/

public int getCurrentPageRowsCount() {

if(currPageNumpageCount){

return maxPageRowCount;

}

else{//最后一页

return totalRowCount-(pageCount-1)*maxPageRowCount;

}

}

public int getCurrentPageNum(){

return currPageNum;

}

/**

* setMaxPageRows

*

* @return int

*/

public void setMaxPageRows(int rowCount) {

maxPageRowCount = rowCount;

//计算总页数

if (totalRowCount % maxPageRowCount 0) { //有余数

pageCount = totalRowCount / maxPageRowCount + 1;

}

else {

pageCount = totalRowCount / maxPageRowCount;

}

}

/**

* getMaxPageRows

*/

public int getMaxPageRows() {

return maxPageRowCount;

}

//私有方法，返回集合中指定范围的数据

private Object getElementsAt(Collection model, int fromIndex, int toIndex) {

Iterator iter = model.iterator();

ArrayList arr = new ArrayList();

if (iter != null) {

int i = 0;

while (iter.hasNext()) {

Object obj=iter.next();

if (i = fromIndex i = toIndex) {

arr.add(obj);

}

if (i toIndex) {

break;

}

i = i + 1;

}

}

return arr;

}

}

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