先闡述一下具體的思路：

第一步：編寫(xiě)一個(gè)分頁(yè)的類里面包含了（第一頁(yè)，最后一頁(yè)，下一頁(yè)，上一頁(yè)，當(dāng)前頁(yè)，頁(yè)碼等等）對(duì)象和方法。

第二步：進(jìn)行分頁(yè)的業(yè)務(wù)處理。

> ------**分頁(yè)類**------------package newRelease.dao;import java.util.ArrayList; /*** * @author wfy* 分頁(yè)算法 根據(jù)總記錄數(shù)，和每頁(yè)顯示記錄數(shù)實(shí)現(xiàn)分頁(yè)功能* @param <T>*/ public class PageBean<T>{private ArrayList<T> pageList; //ArrayList泛型private int pageSize; //每頁(yè)多少條記錄private int rowCount; //總共有多少條記錄private int totalPage; //總共有多少頁(yè)private int currentPage; //當(dāng)前頁(yè)碼private boolean firstPage; //第一頁(yè)，bool類型private boolean lastPage; //最后一頁(yè)，bool類型private int previousPageCount; //前一頁(yè)private int nextPageCount; //后一頁(yè)private int beginPage; //開(kāi)始頁(yè)private int endPage; //尾頁(yè)public PageBean(){pageSize = 4; //設(shè)置一頁(yè)只有4條記錄}public void setPageList(ArrayList<T> pageList) {this.pageList = pageList; //設(shè)置PageList對(duì)象}public ArrayList<T> getPageList(){return pageList;}public int getRowCount(){return rowCount;}public void setRowCount(int rowCount){this.rowCount = rowCount;totalPage = rowCount % pageSize != 0 ? rowCount / pageSize + 1 : rowCount / pageSize; //使用了if : 條件運(yùn)算符}public int getCurrentPage(){return currentPage;}public void setCurrentPage(int currentPage){this.currentPage = currentPage;//判斷如果超過(guò)了totalPageif(currentPage > totalPage){this.currentPage = totalPage;}if(currentPage < 1){this.currentPage = 1;}previousPageCount = currentPage - 1;nextPageCount = currentPage + 1;//如果當(dāng)前頁(yè)是第一頁(yè)，則為首頁(yè)if(this.currentPage == 1){firstPage = true;} else{firstPage = false;}if(this.currentPage == totalPage){lastPage = true;} else{lastPage = false;}//對(duì)需要顯示的頁(yè)碼進(jìn)行判斷從beginPage開(kāi)始，endPage結(jié)束beginPage = this.currentPage <= 5 ? 1 : this.currentPage;endPage = beginPage >=totalPage - 5 ? totalPage:beginPage +5;if(endPage - 5 > 0 && endPage - 5 < beginPage){beginPage = endPage - 5;}}public int getPreviousPageCount(){return previousPageCount;}public int getNextPageCount(){return nextPageCount;}public int getPageSize(){return pageSize;}public void setPageSize(int pageSize){this.pageSize = pageSize;}public int getTotalPage(){return totalPage;}public boolean isFirstPage(){return firstPage;}public boolean isLastPage(){return lastPage;}public int getBeginPage(){return beginPage;}public int getEndPage(){return endPage;} }

業(yè)務(wù)處理代碼

//獲取頁(yè)碼String curPage = request.getParameter("curPage");//創(chuàng)建一個(gè)pageBean對(duì)象PageBean pageBean = new PageBean();//通過(guò)getNum()方法得到總記錄條數(shù)rowCount = bookDAO.getNum();//把相關(guān)參數(shù)存放到pageBean對(duì)象中pageBean.setRowCount(rowCount); pageBean.setCurrentPage(curPage);//把頁(yè)碼傳遞到getBook()方法中，得到相應(yīng)的分頁(yè)數(shù)據(jù)信息bookList = bookDAO.getBook(pageBean.getCurrentPage());//把booklist中的數(shù)據(jù)存放到pageBean中pageBean.setPageList(booksList);//用于參數(shù)傳遞request.setAttribute("pagebean", pageBean);

總結(jié)

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