简单的分页封装(一)

来源：互联网发布：app软件色影编辑：程序博客网时间：2024/05/01 23:44

分页对象接口：

public interface Paginable {/** * 总记录数 *  * @return */public int getTotalCount();/** * 总页数 *  * @return */public int getTotalPage();/** * 每页记录数 *  * @return */public int getPageSize();/** * 当前页号 *  * @return */public int getPageNo();/** * 是否第一页 *  * @return */public boolean isFirstPage();/** * 是否最后一页 *  * @return */public boolean isLastPage();/** * 返回下页的页号 */public int getNextPage();/** * 返回上页的页号 */public int getPrePage();}

简单的分页对象：

public class SimplePage implements Serializable,Paginable{private static final long serialVersionUID = 1L;public static final int DEF_COUNT = 20;/** * 检查页码 checkPageNo *  * @param pageNo * @return if pageNo==null or pageNo<1 then return 1 else return pageNo */public static int cpn(Integer pageNo) {return (pageNo == null || pageNo < 1) ? 1 : pageNo;}public SimplePage() {}/** * 构造器 *  * @param pageNo *            页码 * @param pageSize *            每页几条数据 * @param totalCount *            总共几条数据 */public SimplePage(int pageNo, int pageSize, int totalCount) {setTotalCount(totalCount);setPageSize(pageSize);setPageNo(pageNo);adjustPageNo();}/** * 调整页码，使不超过最大页数 */public void adjustPageNo() {if (pageNo == 1) {return;}int tp = getTotalPage();if (pageNo > tp) {pageNo = tp;}}/** * 获得页码 */public int getPageNo() {return pageNo;}/** * 每页几条数据 */public int getPageSize() {return pageSize;}/** * 总共几条数据 */public int getTotalCount() {return totalCount;}/** * 总共几页 */public int getTotalPage() {int totalPage = totalCount / pageSize;if (totalPage == 0 || totalCount % pageSize != 0) {totalPage++;}return totalPage;}/** * 是否第一页 */public boolean isFirstPage() {return pageNo <= 1;}/** * 是否最后一页 */public boolean isLastPage() {return pageNo >= getTotalPage();}/** * 下一页页码 */public int getNextPage() {if (isLastPage()) {return pageNo;} else {return pageNo + 1;}}/** * 上一页页码 */public int getPrePage() {if (isFirstPage()) {return pageNo;} else {return pageNo - 1;}}protected int totalCount = 0;protected int pageSize = 20;protected int pageNo = 1;/** * if totalCount<0 then totalCount=0 *  * @param totalCount */public void setTotalCount(int totalCount) {if (totalCount < 0) {this.totalCount = 0;} else {this.totalCount = totalCount;}}/** * if pageSize< 1 then pageSize=DEF_COUNT *  * @param pageSize */public void setPageSize(int pageSize) {if (pageSize < 1) {this.pageSize = DEF_COUNT;} else {this.pageSize = pageSize;}}/** * if pageNo < 1 then pageNo=1 *  * @param pageNo */public void setPageNo(int pageNo) {if (pageNo < 1) {this.pageNo = 1;} else {this.pageNo = pageNo;}}}

分页对象：

public class Pagination extends SimplePage{private static final long serialVersionUID = 1L;public Pagination() {}/** * 构造器 *  * @param pageNo *            页码 * @param pageSize *            每页几条数据 * @param totalCount *            总共几条数据 */public Pagination(int pageNo, int pageSize, int totalCount) {super(pageNo, pageSize, totalCount);}/** * 构造器 *  * @param pageNo *            页码 * @param pageSize *            每页几条数据 * @param totalCount *            总共几条数据 * @param list *            分页内容 */public Pagination(int pageNo, int pageSize, int totalCount, List<?> list) {super(pageNo, pageSize, totalCount);this.list = list;}/** * 第一条数据位置 *  * @return */public int getFirstResult() {return (pageNo - 1) * pageSize;}/** * 当前页的数据 */private List<?> list;/** * 当前页的分页样式 */private List<String> pageView;/** * 获得分页内容 *  * @return */public List<?> getList() {return list;}/** * 设置分页内容 *  * @param list */public void setList(@SuppressWarnings("rawtypes") List list) {this.list = list;}/** * 获得分页样式 *  * @return */public List<String> getPageView() {return pageView;}/** * 设置分页样式 *  * @param list */public void setPageView(List<String> pageView) {this.pageView = pageView;}/** * 分页显示样示部分 */public void pageView(String url,String params){ pageView = new ArrayList<String>();         if(this.pageNo != 1){            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo=1'\"><font size=2>首页</font></a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.pageNo-1)+"'\"><font size=2>上一页</font></a>");        }else{        pageView.add("<font size=2>首页</font>");        pageView.add("<font size=2>上一页</font>");        }            if(this.getTotalPage() <= 10){            for (int i = 0; i < this.getTotalPage(); i++) {                if((i+1)==this.pageNo){                    pageView.add("<strong>"+this.pageNo+"</strong>");                    i = i+1;                    if(this.pageNo==this.getTotalPage())break;                }                pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(i+1)+"'\">"+(i+1)+"</a>");            }        }else if(this.getTotalPage() <= 20){            //没有把...加上            int l = 0;            int r = 0;            if(this.pageNo<5){                l=this.pageNo-1;                r=10-l-1;            }else if(this.getTotalPage()-this.pageNo<5){                r=this.getTotalPage()-this.pageNo;                l=10-1-r;            }else{                l=4;                r=5;            }            int tmp =  this.pageNo-l;            for (int i = tmp; i < tmp+10; i++) {                if(i==this.pageNo){                    pageView.add("<strong>"+this.pageNo+"</strong>");                    i = i+1;                    if(this.pageNo==this.getTotalPage()) break;                }                pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(i)+"'\">"+(i)+"</a>");            }                        }else if(this.pageNo<7){            for (int i = 0; i < 8; i++) {                if(i+1==this.pageNo){                    pageView.add("<strong>"+this.pageNo+"</strong>");                    i = i+1;                }                pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(i+1)+"'\">"+(i+1)+"</a>");            }            pageView.add("...");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.getTotalPage()-1)+"'\">"+(this.getTotalPage()-1)+"</a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.getTotalPage())+"'\">"+(this.getTotalPage())+"</a>");        }else if(this.pageNo>this.getTotalPage()-6){            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(1)+"'\">"+(1)+"</a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(2)+"'\">"+(2)+"</a>");            pageView.add("...");            for (int i = this.getTotalPage()-8; i <this.getTotalPage() ; i++) {                if(i+1==this.pageNo){                    pageView.add("<strong>"+this.pageNo+"</strong>");                    i = i+1;                    if(this.pageNo==this.getTotalPage()) break;                }                pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(i+1)+"'\">"+(i+1)+"</a>");            }        }else{            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(1)+"'\">"+(1)+"</a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(2)+"'\">"+(2)+"</a>");            pageView.add("...");                        pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.pageNo-2)+"'\">"+(this.pageNo-2)+"</a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.pageNo-1)+"'\">"+(this.pageNo-1)+"</a>");            pageView.add("<strong>"+this.pageNo+"</strong>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.pageNo+1)+"'\">"+(this.pageNo+1)+"</a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.pageNo+2)+"'\">"+(this.pageNo+2)+"</a>");                        pageView.add("...");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.getTotalPage()-1)+"'\">"+(this.getTotalPage()-1)+"</a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.getTotalPage())+"'\">"+(this.getTotalPage())+"</a>");        }            if(this.pageNo != this.getTotalPage()){            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+(this.pageNo+1)+"'\"><font size=2>下一页</font></a>");            pageView.add("<a href=\"javascript:void(0);\" onclick=\"javascript:window.location.href='" + url + "?" + params + "&pageNo="+this.getTotalPage()+"'\"><font size=2>尾页</font></a>");        } else{        pageView.add("<font size=2>下一页</font>");        pageView.add("<font size=2>尾页</font>");        }        pageView.add("共<var>" + getTotalPage() + "</var>页 到第<input type='text' id='PAGENO'  size='3' />页 <input type='button' id='skip' class='hand btn60x20' value='确定' onclick=\"javascript:window.location.href = '" + url + "?" + params + "&pageNo=' + $('#PAGENO').val() \"/>");}}

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