SSH与SSM学习之SSH实现CRM练习02——客户列表02_PageBean

一、说明

为了分页方便，我们需要写一个和分页相关的类。需要的字段如下

    //当前页数    private Integer currentPage;    //总记录数    private Integer totalCount;    //每页显示条数    private Integer pageSize;    //总页数    private Integer totalPage;    //分页列表数据    private List list;

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二、PageBean

package com.qwm.ssh_crm.utils;import java.util.List;/** * @author：qiwenming * @date：2017/11/5 0005   0:21 * @description： * 分页使用的bean */public class PageBean {    //当前页数    private Integer currentPage;    //总记录数    private Integer totalCount;    //每页显示条数    private Integer pageSize;    //总页数    private Integer totalPage;    //分页列表数据    private List list;    public PageBean(Integer currentPage, Integer totalCount, Integer pageSize) {        this.currentPage = currentPage;        this.totalCount = totalCount;        this.pageSize = pageSize;        //如果页面没有指定显示哪一页，那么显示第一页        if(this.currentPage==null){            this.currentPage = 1;        }        //如果每页显示条数没有指定，默认每页显示5条        if(this.pageSize==null){            this.pageSize = 5;        }        //计算总页数        this.totalPage = (this.totalCount+this.pageSize-1)/this.pageSize;        //判断当前页是否超出了范围        //不能小于1 不能大于最大页数        if(this.currentPage<1){            this.currentPage = 1;        }else if(this.currentPage>this.totalPage){            this.currentPage = this.totalPage;        }    }    //计算起始索引    public int getStart(){        return (this.currentPage-1)*this.pageSize;    }    public Integer getCurrentPage() { return currentPage; }    public void setCurrentPage(Integer currentPage) { this.currentPage = currentPage; }    public Integer getTotalCount() { return totalCount; }    public void setTotalCount(Integer totalCount) { this.totalCount = totalCount; }    public Integer getPageSize() { return pageSize; }    public void setPageSize(Integer pageSize) { this.pageSize = pageSize; }    public Integer getTotalPage() { return totalPage; }    public void setTotalPage(Integer totalPage) { this.totalPage = totalPage; }    public List getList() { return list; }    public void setList(List list) { this.list = list; }}

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三、源码下载

https://github.com/wimingxxx/ssh_crm