freemarker+struts2仿QQ分页效果

package com.ht.util; public class BasePage{ public static final Integer DEFAULT_CURRENT=1; //默认显示第一页 public static final Integer DEFAULT_PAGE_NUM=10;//默认显示10条记录 protected Integer pageFirRecord=0; //当前页第一条记录 protected Integer currentPage=1; //当前页数 protected Integer totalPages; //总页数 protected Integer totalRecord; //总记录数 protected Integer showRecordNum=DEFAULT_PAGE_NUM; //每页显示记录数 protected Integer showPageNum; //当前页显示的记录数量 protected Integer prePage=1; protected Integer nexePage=1; public BasePage(){ } public BasePage(Integer currentPage,Integer totalRecord){ this.setTotalRecord(totalRecord); this.setTotalPages(); this.setCurrentPage(currentPage); this.setShowPageNum(); this.setPageFirRecord(); this.setPrePage(); this.setNexePage(); } /** * 重载 * @param currentPage * @param totalRecord * @param showRecordNum */ public BasePage(Integer currentPage,Integer totalRecord,int showRecordNum){ this.setTotalRecord(totalRecord); this.setShowRecordNum(showRecordNum); this.setTotalPages(); this.setCurrentPage(currentPage); this.setShowPageNum(); this.setPageFirRecord(); this.setPrePage(); //计算前一页页码 this.setNexePage(); //计算下一页页码 } public Integer getPrePage() { return prePage; } public void setPrePage() { this.prePage = currentPage-1; } public Integer getNexePage() { return nexePage; } public void setNexePage() { if(currentPage==totalPages){ //如果当前页码为总页码，即最后一页 this.nexePage = 0; //返回0 }else{ this.nexePage = currentPage+1; } if(totalPages==0){ //如果总页数为0，怎么返回0； this.nexePage = 0; } } public Integer getShowPageNum() { return showPageNum; } public void setShowPageNum() { //当前页显示的记录数量 if(currentPage*showRecordNum-totalRecord>0){ this.showPageNum = totalRecord-(currentPage-1)*showRecordNum; }else{ this.showPageNum=showRecordNum; } } public Integer getShowRecordNum() { return showRecordNum; } public void setShowRecordNum(Integer showRecordNum) { if(showRecordNum==0){ //如果记录数为0，则默认为5 this.showRecordNum=5; }else{ this.showRecordNum = showRecordNum; } } public Integer getTotalPages() { return totalPages; } public void setTotalPages() { //计算总页数 if(totalRecord%showRecordNum==0){ this.totalPages = totalRecord/showRecordNum; }else{ this.totalPages = totalRecord/showRecordNum+1; } } public Integer getTotalRecord() { return totalRecord; } public void setTotalRecord(Integer totalRecord) { this.totalRecord = totalRecord; } public Integer getCurrentPage() { return currentPage; } public void setCurrentPage(Integer currentPage) { if(currentPage==0||currentPage<0){ currentPage=1; } if(currentPage>totalPages&&totalPages!=0){ //2010年8月27日增加， this.currentPage=totalPages; //当前页大于总页数时为总页数,并且保证不存在记录时不出错，即totalPages!=0 }else if(totalPages==0){ this.currentPage=1; }else{ this.currentPage = currentPage; } } public void setPageFirRecord() { //第一条记录所在集合的标号，比实际排数少一 this.pageFirRecord = (getCurrentPage()-1)*showRecordNum; } public Integer getPageFirRecord() { return pageFirRecord; } }