package com.sven.entity;
import java.util.List;
public class PageBean {
private List list;// 要返回的某一页的记录列表
private int allRow;// 总记录数
private int totalPage;// 总页数
private int currentPage;// 当前页
private int pageSize;// 每页记录数
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
private boolean isFirstPage;// 是否为第一页
private boolean isLastPage;// 是否为最后一页
private boolean hasPreviousPage;// 是否有前一页
private boolean hasNextPage;// 是否有下一页
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
public int getAllRow() {
return allRow;
}
public void setAllRow(int allRow) {
this.allRow = allRow;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
/*
*
* 初始化分页信息
*/
public void init() {
this.isFirstPage = isFirstPage();
this.isLastPage = isLastPage();
this.hasPreviousPage = isHasPreviousPage();
this.hasNextPage = hasNextPage();
}
private boolean isHasPreviousPage() {
// TODO Auto-generated method stub
return currentPage != 1; // 只要当前页不是第1页
}
private boolean isFirstPage() {
// TODO Auto-generated method stub
return currentPage == 1; // 如是当前页是第1页
}
private boolean isLastPage() {
// TODO Auto-generated method stub
return currentPage == totalPage; // 如果当前页是最后一页
}
private boolean hasNextPage() {
// TODO Auto-generated method stub
return currentPage != totalPage; // 只要当前页不是最后1页
}
/**
* 计算总页数,静态方法,供外部直接通过类名调用
*
* @param pageSize
* 每页记录数
* @param allRow
* 总记录数
* @return 总页数
*/
public static int countTotalPage(final int pageSize, final int allRow) {
int totalPage = allRow % pageSize == 0 ? allRow / pageSize : allRow
/ pageSize + 1;
return totalPage;
}
/**
* 计算当前页,若为0或者请求的URL中没有"?page=",则用1代替 * @param page 传入的参数(可能为空,即0,则返回1) @return
* 当前页
*/
public static int countOffset(final int pageSize, final int currentPage) {
final int offset = pageSize * (currentPage - 1);
return offset;
}
/**
* * 计算当前页,若为0或者请求的URL中没有"?page=",则用1代替 * @param page
* 传入的参数(可能为空,即0,则返回1) * @return 当前页
*/
public static int countCurrentPage(int page) {
final int curPage = (page == 0 ? 1 : page);
return curPage;
}
}