Java分页代码（JFIS)

TpageList类

package jfis.util;

import java.util.List;

publicclass TPageList {

private TPages page=null; //分页对象

private List objectList=null; //对象集合

private String pageStr=""; //分页字符串

public List getObjectList() {

returnobjectList;

}

publicvoid setObjectList(List objectList) {

this.objectList = objectList;

}

public TPages getPage() {

returnpage;

}

publicvoid setPage(TPages page) {

this.page = page;

pageStr=page.getLastPageBreak();

}

public String getPageStr() {

returnpageStr;

}

publicvoid setPageStr(String pageStr) {

this.pageStr = pageStr;

}

}

Tpages类

package jfis.util;

import javax.servlet.http.HttpServletRequest;

publicclass TPages {

private String fileName="";

privateintpageSize=2; //页大小

privateintallPage=1; //总页数

privateintcPage=1; //当前页

privateintsPage=1; //当前页开始记录数

privateintallRecord=1; //总记录数

private String lastPageBreak=""; //分页字符串

privateinta ;//分拆list结果集的变量（相当与游标）。可从list中的确定位置开始读数据

// String bian = request.getParameter("aaa")==null?"0":"5";

// this.a = new Integer(bian);

publicint getA() {

returna;

}

publicvoid setA(int a) {

this.a = a;

}

public TPages(){

}

public TPages(String fileName,HttpServletRequest request){

this.fileName=fileName;

//获得当前页

String cPageStr = request.getParameter("cpage")==null?"1":request.getParameter("cpage");

this.a = request.getParameter("aaa")==null ? 0 : new Integer(request.getParameter("aaa"));

int cPageInt = 0;

try

{

cPageInt = Integer.parseInt(cPageStr);

}catch(Exception e){

System.out.println("com.s6.util.Pages = "+e.getMessage());

cPageInt = 1;

}finally{

cPage = cPageInt;

}

}

//计算总页数,判断当前页的合法性，计算当前页的开始记录数，生成分页字符串

publicvoid doPage(){

//计算总页数

this.allPage=(int)(this.allRecord+this.pageSize-1)/this.pageSize;

//判断当前页的合法性

if(this.cPage<0){

this.cPage=1;

}

if(this.cPage>this.allPage){

this.cPage=this.allPage;

}

//计算当前页开始记录数

this.sPage=(this.cPage-1)*this.pageSize+1;

//生成分页字符串

StringBuffer str=new StringBuffer();

//判断是否有问号“？”

if(this.fileName.indexOf("?")==-1){

this.fileName=this.fileName+"?1=1";

}

str.append("<table width=/"100%/" height=/"100%/">");

//添加表单

str.append("<form name=/"pagelist/" method=/"post/" action=/"");

str.append(this.fileName+"/">");

str.append("<tr><td width=/"100%/" height=/"100%/" align=/"right/" valign=/"middle/">");

str.append("总纪录数"+this.allRecord+"条");

str.append("&nbsp;");

//首页

if(this.cPage>1){

str.append("<a href="+this.fileName+"&cpage=1>首页</a>");

}else{

str.append("首页");

}

str.append("&nbsp;");

//上一页

if(this.cPage>1){

str.append("<a href=");

str.append(this.fileName+"&cpage=");

str.append(this.cPage-1);

str.append("&aaa=");

str.append(this.a-5);

str.append(">上一页</a>");

}else{

str.append("上一页");

}

str.append("&nbsp;");

//下一页

if(this.cPage<this.allPage){

str.append("<a href=");

str.append(this.fileName+"&cpage=");

str.append(this.cPage+1);

str.append("&aaa=");

str.append(this.a+5);

str.append(">下一页</a>");

}else{

str.append("下一页");

}

str.append("&nbsp;");

//末页

if(this.cPage<this.allPage){

str.append("<a href=");

str.append(this.fileName+"&cpage=");

str.append(this.allPage);

str.append(">末页</a>");

}else{

str.append("末页");

}

str.append("&nbsp;");

//第几页

str.append("第");

str.append(this.cPage);

str.append("页");

str.append("&nbsp;");

//共几页

str.append("共");

str.append(this.allPage);

str.append("页");

str.append("&nbsp;");

//跳转页

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

str.append("&nbsp;");

if(i==this.cPage){

str.append(i);

}else{

str.append("<a href=");

str.append(this.fileName+"&cpage=");

str.append(i);

str.append(">"+i+"</a>");

}

}

str.append("</td></tr></form>");

str.append("</table>");

lastPageBreak=str.toString();

}

publicint getAllPage() {

returnallPage;

}

publicvoid setAllPage(int allPage) {

this.allPage = allPage;

}

publicint getCPage() {

returncPage;

}

publicvoid setCPage(int page) {

cPage = page;

}

public String getFileName() {

returnfileName;

}

publicvoid setFileName(String fileName) {

this.fileName = fileName;

}

public String getLastPageBreak() {

returnlastPageBreak;

}

publicvoid setLastPageBreak(String lastPageBreak) {

this.lastPageBreak = lastPageBreak;

}

publicint getPageSize() {

returnpageSize;

}

publicvoid setPageSize(int pageSize) {

this.pageSize = pageSize;

}

publicint getSPage() {

doPage();

returnsPage;

}

publicvoid setSPage(int page) {

sPage = page;

}

publicint getAllRecord() {

returnallRecord;

}

publicvoid setAllRecord(int allRecord) {

this.allRecord = allRecord;

}

}

DAO里的方法

// 分页

public TPageList pageSearchlist(TPages pages, List list) {

TPageList pageList = new TPageList();

// 记录集总行数

pages.setAllRecord(list.size());

// rs用于保存从list中截取的记录

List rs = new ArrayList();

// 控制从list集合中的第几条开始读取,相当于游标

int a = pages.getA();

// for循环中"5"代表一次读出多少条数据:"a"控制从list集合中的第几条开始读取,相当于游标。

for (int i = 0; i < 5 && a < list.size(); a++) {

rs.add(list.get(a));

i++;

}

Iterator iterator = rs.iterator();

// 得到分页字符串

pages.getSPage();

int i = 0;// 循环变量

// 判断记录总行数是否大于0，并循环创建USER对象

if (pages.getAllRecord() > 0) {

do {

i++;

} while (iterator.hasNext() && i < pages.getPageSize());

pageList.setPage(pages);

pageList.setObjectList(rs);

}

return pageList;

}

Action里的方法

public ActionForward pageSearchList(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

TPages pages = new TPages(

"/JFIS_CompanyManager/client/outer.do?method=pageSearchList",

request);

pages.setPageSize(5);

TPageList pageList = iouter.pageSearchlist(pages, iouter.getAllOuter());

request.setAttribute("outers", pageList);

return mapping.findForward("outer_list");

}

SSH分页

说明：分页的两个类不变，只变Action和DAO。

Action中

// 分页

public ActionForward pageSearchList(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

Pages pages = new Pages( "/JFIS_CompanyManager/client/outer.do?method=pageSearchList",request);

pages.setPageSize(10);

PageList pageList = iouter.outerList(pages);

request.setAttribute("outers", pageList);

return mapping.findForward("outer_list");

}

DAO中

// 分页

public PageList outerList(Pages pages) {

PageList pageList = new PageList();

List list = new ArrayList();

/*开启一个HibernateSession对象*/

Session session = this.getSession();

Transaction t = session.beginTransaction();

/*获得结果集*/

Query query = session

.createQuery("from jfis.bean.JfisClientItem order by starttime desc");

/*记录集总行数*/

pages.setAllRecord(query.list().size());

query.setFirstResult(pages.getSPage() - 1);

query.setMaxResults(10);/*设置每页显示的记录数*/

List rs = query.list();

Iterator iterator = rs.iterator();

/*得到分页字符串*/

pages.getSPage();

int i = 0;/*循环变量*/

/*判断记录总行数是否大于0，并循环创建USER对象*/

if (pages.getAllRecord() > 0) {

do {

list = rs;

i++;

} while (iterator.hasNext() && i < pages.getPageSize());

pageList.setPage(pages);

pageList.setObjectList(list);

t.commit();/*事务提交*/

session.close();

}

return pageList;

}