不连数据库List分页

package com.jpsycn.kfwggl.common.crawl; import java.util.ArrayList; import java.util.List; public class PageListBean {

private int currentPage = 1;  //当前页

private int rowsCountPerPage = 5;  //每页的数据条数

private int totalPage = 0;  //共有多少页

private int totalCount = 0; //共有多少行数据

private List dataList = null; //待分页的数据

private List tempDataList = null;  //每页的数据

public PageListBean() {

}

@SuppressWarnings("unchecked")

public List getPaper(List dataList/* 待分页的数据 */, int rowsCount/* 每页显示的行数 */)

{

initPageList(dataList, rowsCount);

tempDataList = new ArrayList();

//currentPage * rowsCountPerPage 定位到当前页的数据数

//currentPage * rowsCountPerPage - rowsCountPerPage 定位到当前页的第一条数据

for(int i = currentPage * rowsCountPerPage - rowsCountPerPage; i < currentPage * rowsCountPerPage; i++) {

if(i >= totalCount) break;

tempDataList.add(dataList.get(i));

}

return tempDataList;

}

//待分页的数据,设置记录数,每页记录数,总页数

private void initPageList(List dataList, int rowsCount) {

this.dataList = dataList;

totalCount = dataList.size();

rowsCountPerPage = rowsCount;

if(totalCount % rowsCountPerPage == 0) {

totalPage = totalCount / rowsCountPerPage;

} else {

totalPage = totalCount / rowsCountPerPage + 1;

}

}

public int getCurrentPage() {

return currentPage;

}

public void setCurrentPage(int currentPage) {

this.currentPage = currentPage;

}

public int getRowsCountPerPage() {

return rowsCountPerPage;

}

public void setRowsCountPerPage(int rowsCountPerPage) {

this.rowsCountPerPage = rowsCountPerPage;

}

public int getTotalPage() {

return totalPage;

}

public void setTotalPage(int totalPage) {

this.totalPage = totalPage;

}

public int getTotalCount() {

return totalCount;

}

public void setTotalCount(int totalCount) {

this.totalCount = totalCount;

}

public List getDataList() {

return dataList;

}

public void setDataList(List dataList) {

this.dataList = dataList;

}

@SuppressWarnings("unchecked")

public static void main(String[] args) {

List da = new ArrayList();

for(int i = 0; i < 25; i++) {

da.add(i+1);

}

PageListBean bean = new PageListBean();

List pagerList = bean.getPaper(da, 5);

bean.setCurrentPage(bean.getTotalPage());

pagerList = bean.getPaper(da, 5);

for(int b = 0; b < pagerList.size(); b++) {

System.out.println(pagerList.get(b));

}

} }