java中分页效果的实现代码

 1 public class PageBean {  
 2     private int curPage;             //当前页  
 3     private int pageCount;           //总页数  
 4     private int rowsCount;           //总行数  
 5     private int pageSize=10;         //每页多少行  
 6       
 7       
 8       
 9     public PageBean(int rows){  
10           
11         this.setRowsCount(rows);  
12         if(this.rowsCount % this.pageSize == 0){  
13             this.pageCount=this.rowsCount / this.pageSize;  
14         }  
15         else if(rows<this.pageSize){  
16             this.pageCount=1;  
17         }  
18         else{  
19             this.pageCount=this.rowsCount / this.pageSize +1;  
20         }  
21     }  
22       
23       
24     public int getCurPage() {  
25         return curPage;  
26     }  
27     public void setCurPage(int curPage) {  
28         this.curPage = curPage;  
29     }  
30     public int getPageCount() {  
31         return pageCount;  
32     }  
33     public void setPageCount(int pageCount) {  
34         this.pageCount = pageCount;  
35     }  
36     public int getPageSize() {  
37         return pageSize;  
38     }  
39     public void setPageSize(int pageSize) {  
40         this.pageSize = pageSize;  
41     }  
42     public int getRowsCount() {  
43         return rowsCount;  
44     }  
45     public void setRowsCount(int rowsCount) {  
46         this.rowsCount = rowsCount;  
47     }  
48 }  

 1 List clist=adminbiz.queryNotFullCourse();//将查询结果存放在List集合里  
 2 PageBean pagebean=new PageBean(clist.size());//初始化PageBean对象  
 3 //设置当前页  
 4 pagebean.setCurPage(page); //这里page是从页面上获取的一个参数，代表页数  
 5 //获得分页大小  
 6 int pagesize=pagebean.getPageSize();  
 7 //获得分页数据在list集合中的索引  
 8 int firstIndex=(page-1)*pagesize;  
 9 int toIndex=page*pagesize;  
10 if(toIndex>clist.size()){  
11     toIndex=clist.size();  
12 }  
13 if(firstIndex>toIndex){  
14     firstIndex=0;  
15     pagebean.setCurPage(1);  
16 }  
17 //截取数据集合，获得分页数据  
18 List courseList=clist.subList(firstIndex, toIndex);