分页类（个人创建的实体类，无其他方法）

package com.eip.common.entity;
import java.io.Serializable;
import lombok.AllArgsConstructor;
import lombok.Builder;
import org.apache.commons.lang.StringUtils;
@Builder
@AllArgsConstructor
public class PageParam implements Serializable {
    private static final long serialVersionUID = 1L;
    private int page;    //当前第几页
    private int rows;    //每页显示记录数
    private int offset;    //第几条记录起始
    private String sort;//排序字段
    private String order;//排序
    public PageParam(){}
    public PageParam(int page, int rows){
        this.page = page;
        this.rows = rows;
    }
    public int getPage() {
        return page;
    }
    public void setPage(int page) {
        this.page = page;
    }
    public int getRows() {
        return rows;
    }
    public void setRows(int rows) {
        this.rows = rows;
    }
    public int getOffset() {
        offset = (page - 1) * rows;
        return offset;
    }
    public String getSort() {
        return sort;
    }
    public void setSort(String sort) {
        this.sort = sort;
    }
    public String getOrder() {
        return order;
    }
    public void setOrder(String order) {
        this.order = order;
    }
    public String getOrderBy(){
        if(StringUtils.isNotBlank(sort)&&StringUtils.isNotBlank(order)){
            return sort + " " + order;
        }else{
            return "";
        }
    }
}