java简单分页工具类

 1 import java.util.List;
 2 
 3 /**
 4  *  分页工具
 5  * @author Administrator
 6  *
 7  */
 8 public class PageBean<T> {
 9 
10     private int pageNo = 1;  //当前页
11     private int pageSize = 4; //每页个数
12     private int totalCount;  //总记录数
13     private int totalPages;  //总页数--只读
14     private List<T> pageList;  //每页对应的集合泛型
15     public int getPageNo() {
16         return pageNo;
17     }
18     //当前页码不能小于1不能大于总页数
19     public void setPageNo(int pageNo) {
20         if(pageNo<1)
21             this.pageNo = 1;
22         else if(pageNo > totalPages)
23             this.pageNo = totalPages;
24         else
25             this.pageNo = pageNo;
26     }
27     public int getPageSize() {
28         return pageSize;
29     }
30     public void setPageSize(int pageSize) {
31         this.pageSize = pageSize;
32     }
33     //总记录数决定总页数
34     public void setTotalCount(int totalCount) {
35         this.totalCount = totalCount;
36         this.totalPages = (this.totalCount%this.pageSize==0)?this.totalCount/this.pageSize:this.totalCount/this.pageSize+1;
37     }
38     public int getTotalCount() {
39         return totalCount;
40     }
41     
42     //只读
43     public int getTotalPages() {
44         return totalPages;
45     }
46     
47     
48     public List<T> getPageList() {
49         return pageList;
50     }
51     public void setPageList(List<T> pageList) {
52         this.pageList = pageList;
53     }
54     public PageBean(int pageNo, int pageSize, int totalCount, int totalPages,
55             List<T> pageList) {
56         super();
57         this.pageNo = pageNo;
58         this.pageSize = pageSize;
59         this.totalCount = totalCount;
60         this.totalPages = totalPages;
61         this.pageList = pageList;
62     }
63     public PageBean() {
64         super();
65         // TODO Auto-generated constructor stub
66     }
67
68 }

mysql分页：select * from 表 limit (pageNo-1)*pageSize,pageSize; 

oracle分页：select a.* (select 表.*,rowum rn from 表) a where rn>(pageNo-1)*pageSize and rn <=pageNo*pageSize;

这是一个最简单分页工具类，顺便附上mysql以及oracle分页语句，大佬勿喷，仅供参考。