分頁封裝 PageInfo

分頁用

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;



    @Override
    public PageInfo<Account> selectByPageAndSelections(int currentPage, int pageSize) {
        PageHelper.startPage(currentPage, pageSize);
        List<Account> docs = accountMapper.selectByPageAndSelections(null);
        PageInfo<Account> pageInfo = new PageInfo<Account>(docs);
        return pageInfo;
    }

 

 

import java.io.Serializable;

/*
 *
 * PageInfo
 * @author wangwei
 * @date 2019/1/9
  * @param null 
 * @return 
 */
public class PageInfo implements Serializable{


    private static final long serialVersionUID = 1L;
    /**
     * 總記錄數
     */
    private Long total;
    /**
     * 總頁數
     */
    private Long totalPages;
    /**
     * 當前頁
     */
    private Integer pageNo;
    /**
     * 頁記錄數
     */
    private Integer pageSize;

    public PageInfo(Long total) {
        this.total = total;
    }

    public PageInfo(Long total, Integer pageNo,
                    Integer pageSize) {
        this.total = total;
        this.totalPages = (total - 1) / pageSize + 1;
        this.pageNo = pageNo;
        this.pageSize = pageSize;
    }

    public static PageInfo page(Long total) {
        return new PageInfo(total);
    }

    public static PageInfo page( Long total, Integer pageNo,
                                 Integer pageSize) {
        return new PageInfo(total, pageNo, pageSize);
    }

    public Long getTotal() {
        return total;
    }

    public void setTotal(Long total) {
        this.total = total;
    }

    public Long getTotalPages() {
        return totalPages;
    }

    public void setTotalPages(Long totalPages) {
        this.totalPages = totalPages;
    }

    public Integer getPageNo() {
        return pageNo;
    }

    public void setPageNo(Integer pageNo) {
        this.pageNo = pageNo;
    }

    public Integer getPageSize() {
        return pageSize;
    }

    public void setPageSize(Integer pageSize) {
        this.pageSize = pageSize;
    }
}