ssm項目分頁查詢實現

1.首先創建一個分頁實體類PageBean

public class PageBean<T>{
    //總記錄數
    private int totalCount;
    //總頁碼
    private int totalPage;
    //每頁的數據
    private List<T>list;
    //當前頁碼
    private int currentPage;
    //每頁顯示的記錄數
    private int rows;

    //get and set方法
}

2.controller層

@Autowrid
private UserService userService;

public StringselectByPage(@RequestParam("currentPage")int currentPage,@RequestParam("rows")int rows,Model model){
    //查詢
    PageBean<User>pb=userservice.selectByPage(currentPage,rows);
    //存入model中
    model.setObject("list",list);
    //轉發
    return "user.jsp";
    
    
    
}

service層

public PageBean<User> selectByPage(int currentPage,int rows){
    //創建空的pagebean對象
    PageBean<User>pb=new PageBean<User>();

    //設置參數
    pb.setCurrentPage(currentPage);
    pb.setRows(rows);

    //調用dao查詢總記錄數
    int totalCount=userMapper.findTotalCount();
    pb.setTotalCount(totalCount);

    //查詢list集合
    //計算剛開始查詢的索引
    int start=(currentPage-1)*rows;
    List<User>list=userMapper.selectAll(start,rows);
    pb.setList(list);

    //計算總頁碼
    int totalPage = totalCount % rows ==0 ? totalCount/rows : totalCount/rows + 1 ;
    pb.setTotalPage(totalPage );

    return pb;


}

mybatis及UserServiceImpl略去.