（初学）简单实用的JAVA分页

来源：互联网发布：精准扶贫数据造假编辑：程序博客网时间：2024/05/21 09:47

一个简单的JAVA分页展示

这里是实现类：

public class PageUtilServices { private int pageSize;//每页显示的条数    private int recordCount;//总共的条数    private int currentPage;//当前页面    //构造方法    public PageUtilServices(int pageSize, int recordCount, int currentPage) {super();this.pageSize = pageSize;this.recordCount = recordCount;this.currentPage = currentPage;}    public PageUtilServices() {    super();    }      //总页数        public int getPageCount() {            int size = recordCount/pageSize;//总条数/每页显示的条数=总页数            int mod = recordCount % pageSize;//最后一页的条数            if(mod != 0)                size++;            return recordCount == 0 ? 1 : size;        }//当前页的起始索引为0        public int getFromIndex() {            return (currentPage-1) * pageSize;        }        //当前页应展示的最后索引        public int getToIndex() {            return  Math.min(recordCount, currentPage * pageSize);        }               public int getCurrentPage() {            return currentPage;        }        public void setCurrentPage(int currentPage) {                       this.currentPage = currentPage;        }        public int getPageSize() {            return pageSize;        }        public void setPageSize(int pageSize) {            this.pageSize = pageSize;        }        public int getRecordCount() {            return recordCount;        }        public void setRecordCount(int recordCount) {            this.recordCount = recordCount;        }}

这里是写在JSP前面的代码：

 BookInfoDao dao = new BookInfoDao();  List<Books> bookList = dao.showBooks();  String pageStr = request.getParameter("page");  int currentPage = 1;  if (pageStr==null){    currentPage = 1;  }else if(Integer.parseInt(pageStr)<=0){  currentPage = 1;  }else if(Integer.parseInt(pageStr)>bookList.size()/3){  currentPage =bookList.size()/3+1;  }else{  currentPage=Integer.parseInt(pageStr);  }  PageUtilServices pUtil = new PageUtilServices(3, bookList.size(), currentPage);  currentPage = pUtil.getCurrentPage();

这里是中间循环的代码：

for (int i = pUtil.getFromIndex(); i < pUtil.getToIndex(); i++) {}

这里是最后部分的代码：

<tr><td colspan=13 align="center">记录总数<%=pUtil.getRecordCount()%>条 当前页/总页数<%=currentPage%>/<%=pUtil.getPageCount()%> 每页显示<%=pUtil.getPageSize()%>条<a href="booklist.jsp?page=1">首页</a><a href="booklist.jsp?page=<%=(currentPage - 1)%>">上页</a><a href="booklist.jsp?page=<%=(currentPage + 1)%>">下页</a><a href="booklist.jsp?page=<%=pUtil.getPageCount()%>">末页</a>    </td></tr>

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