分页查询------商品分类(上)

基本思路后台从数据库查询出想要的属性存储,前台调用显示
1.实体类

import java.io.Serializable;
import java.util.List;
public class PageBean<T> implements Serializable{
   
	/**分页实体类
	 * 当前页
	 * 每页显示条数
	*列表数据
	*总页数
	*总记录数 
	 */
	private Integer currentPage;
	private Integer pageSize;
	private List<T> list;
	private Integer totalPage;
	private Integer totalCount;
	public PageBean() {
   
		super();
		// TODO Auto-generated constructor stub
	}
	public PageBean(Integer currentPage, Integer pageSize, List<T> list, Integer totalPage, Integer totalCount) {
   
		super();
		this.currentPage = currentPage;
		this.pageSize = pageSize;
		this.list = list;
		this.totalPage = totalPage;
		this.totalCount = totalCount;
	}
	
	public PageBean(Integer currentPage, Integer pageSize, List<T> list, Integer totalCount) {
   
		this.currentPage = currentPage;
		this.pageSize = pageSize;
		this.list = list;
		this