Bootstrap和Java分页实例第一篇

关于此文

　　bootstrap是前端很流行的框架，正在开发的项目，用bootstrap搭建起来的页面，自我感觉很完美，终于告别了苍白无力的白花花的难看的……的页面了。哈哈。

     现在遇到了bootstrap的分页与Java后台结合起来的分页封装问题，对于我这个Java菜鸟来说，包装分页还没玩过。故此，在网上找了这个。觉得很不错，所以决定记录到博客里面。

     还没有实践，决定写完博客去实践。在上图。祝我成功吧！

     此人的博客没找到，代码中有email地址。

pagination

定义了分页常用的属性,方法

package com.app.pagination;import java.util.List;/** * 通用分页接口 * @author: super.wwz@hotmail.com * @ClassName: Pagination * @Version: v0.1 * @param <T> */ public interface Pagination<T> { /** * 判断是否是首页 * @return */ boolean isFirst(); /** * 判断是否是尾页 * @return */ boolean isLast(); /** * 判断是否有上一页 * @return */ boolean isPrevious(); /** * 判断是否有下一页 * @return */ boolean isNext();   /** * 获取上一页的页码 * @return */ int getPreviousIndex(); /** * 获取下一页的页码 * @return */ int getNextIndex(); /** * 获取当前页码 * @return */ int getPageIndex(); /** * 获取当前页大小 * @return */ int getPageSize(); /** * 获取总页数 * @return */ int getTotalPages(); /** * 获取数据总行数 * @return */ int getTotalElements();  /** * 获取当前页的数据 * @return */ List<T> getCurrData();  /** * 获取数字分页链接对象 * @return */ BetweenIndex getBetweenIndex();  /** * 获取每页显示的分页链接数 * @return */ int getPageLinkNumber();  /** * 设置每页的分页链接数量 * @param pageLinkNumber */ void setPageLinkNumber(int pageLinkNumber);}

BetweenIndex

该接口负责获取分页链接的开始和结尾索引

package com.app.pagination;/** * 开始链接-结束链接 * @author: super.wwz@hotmail.com * @ClassName: BetweenIndex * @Version: v0.1 */public interface BetweenIndex { /** * 获取开始分页链接索引 * @return */ int getBeginIndex(); /** * 获取结束分页链接索引 * @return */ int getEndIndex();}

DefaultPagination

Pagination接口的默认实现类

package com.app.pagination.impl;import java.util.List;import com.app.pagination.BetweenIndex;import com.app.pagination.Pagination;/** * Pagination接口默认实现 * @author: super.wwz@hotmail.com * @ClassName: DefaultPagination * @Version: v0.1 * @param <T> */public class DefaultPagination<T> implements Pagination<T> { private int totalElements; private int pageSize; private int totalPages; private int pageIndex; private QueryHandler<T> queryHandler; private List<T> currData; private int pageLinkNumber; public DefaultPagination(int pageIndex, int pageSize, QueryHandler<T> queryHandler, int pageLinkNumber) { this(pageIndex, pageSize, queryHandler); setPageLinkNumber(pageLinkNumber); } public DefaultPagination(int pageIndex, int pageSize, QueryHandler<T> queryHandler){ //初始化数据访问回调接口 this.queryHandler = queryHandler; //查询总行数 setTotalElements(); //修正页大小 setPageSize(pageSize); //计算总页数: setTotalPages(); //修正页码 setPageIndex(pageIndex); //查询当前页数据 setCurrData(); } private void setCurrData() { // TODO Auto-generated method stub this.currData = queryHandler.getCurrData(pageIndex, pageSize); } private void setPageIndex(int pageIndex) { // TODO Auto-generated method stub if(pageIndex < 1) { this.pageIndex = 1; } else if(pageIndex > totalPages) { this.pageIndex = totalPages; } else { this.pageIndex = pageIndex; } } private void setTotalPages() { // TODO Auto-generated method stub if(pageSize > 0) { /*//普通算法: this.totalPages = totalElements % pageSize == 0 ?  totalElements / pageSize : (totalElements / pageSize) + 1;*/ //减一公式: this.totalPages = (totalElements + pageSize - 1) / pageSize; } } private void setPageSize(int pageSize) { // TODO Auto-generated method stub if(pageSize < 1) { this.pageSize = 1; } else if(pageSize > totalElements) { this.pageSize = totalElements; } else { this.pageSize = pageSize; } } private void setTotalElements() { // TODO Auto-generated method stub this.totalElements = queryHandler.getTotalElements(); } @Override public boolean isFirst() { // TODO Auto-generated method stub return pageIndex == 1; } @Override public boolean isLast() { // TODO Auto-generated method stub return pageIndex == totalPages; } @Override public boolean isPrevious() { // TODO Auto-generated method stub return pageIndex > 1; } @Override public boolean isNext() { // TODO Auto-generated method stub return pageIndex < totalPages; } @Override public int getPreviousIndex() { // TODO Auto-generated method stub return isPrevious() ? pageIndex - 1 : 1; } @Override public int getNextIndex() { // TODO Auto-generated method stub return isNext() ? pageIndex + 1 : totalPages; } @Override public int getPageIndex() { // TODO Auto-generated method stub return pageIndex; } @Override public int getPageSize() { // TODO Auto-generated method stub return pageSize; } @Override public int getTotalPages() { // TODO Auto-generated method stub return totalPages; } @Override public int getTotalElements() { // TODO Auto-generated method stub return totalElements; } @Override public List<T> getCurrData() { // TODO Auto-generated method stub return currData; } @Override public BetweenIndex getBetweenIndex() { // TODO Auto-generated method stub return new BetweenIndex() { private int beginIndex; private int endIndex; { boolean isOdd = pageLinkNumber % 2 == 0; int val = pageLinkNumber / 2; beginIndex = pageIndex - (isOdd ? val - 1: val); endIndex = pageIndex + val; if(beginIndex < 1) {  beginIndex = 1;  endIndex = pageLinkNumber; } if(endIndex > totalPages) {  endIndex = totalPages;  beginIndex = endIndex - pageLinkNumber + 1; } } @Override public int getEndIndex() { // TODO Auto-generated method stub return endIndex; } @Override public int getBeginIndex() { // TODO Auto-generated method stub return beginIndex; } }; } @Override public int getPageLinkNumber() { // TODO Auto-generated method stub return pageLinkNumber; } @Override public void setPageLinkNumber(int pageLinkNumber) { // TODO Auto-generated method stub if (pageLinkNumber < 0) { this.pageLinkNumber = 0; } else if (pageLinkNumber > totalPages) { this.pageLinkNumber = totalPages; } else { this.pageLinkNumber = pageLinkNumber; } }}