分页实体类：PageBean

Posted 2020-08-16 guoshunwgs

 

 

package com.eaju.soms.entity.custom;

import java.util.List;

@SuppressWarnings("rawtypes")
public class PageBean {

// 传递的参数或是配置的参数
private int currentPage; // 当前页
private int pageSize; // 每页显示多少条记录

// 查询数据库
private List recordList; // 本页的数据列表
private int recordCount; // 总记录数

// 计算
private int pageCount; // 总页数
private int beginPageIndex; // 页码列表的开始索引（包含）
private int endPageIndex; // 页码列表的结束索引（包含）

public PageBean() {
super();
}

/**
* 只接受4个必要的属性，会自动的计算出其他3个属性的值
*
* @param currentPage
* @param pageSize
* @param recordList
* @param recordCount
*/
public PageBean(int currentPage, int pageSize, List recordList, int recordCount) {
this.currentPage = currentPage;
this.pageSize = pageSize;
this.recordList = recordList;
this.recordCount = recordCount;

// 计算 pageCount
pageCount = (recordCount + pageSize - 1) / pageSize;

// 计算 beginPageIndex 与 endPageIndex
// >> 总页码小于等于10页时，全部显示
if (pageCount <= 10) {
beginPageIndex = 1;
endPageIndex = pageCount;
}
// >> 总页码大于10页时，就只显示当前页附近的共10个页码
else {
// 默认显示 前4页 + 当前页 + 后5页
beginPageIndex = currentPage - 4; // 7 - 4 = 3;
endPageIndex = currentPage + 5; // 7 + 5 = 12; --> 3 ~ 12

// 如果前面不足4个页码时，则显示前10页
if (beginPageIndex < 1) {
beginPageIndex = 1;
endPageIndex = 10;
}
// 如果后面不足5个页码时，则显示后10页
else if (endPageIndex > pageCount) {
endPageIndex = pageCount;
beginPageIndex = pageCount - 9;
}
}
}

public List getRecordList() {
return recordList;
}

public void setRecordList(List recordList) {
this.recordList = recordList;
}

public int getCurrentPage() {
return currentPage;
}

public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}

public int getPageCount() {
return pageCount;
}

public void setPageCount(int pageCount) {
this.pageCount = pageCount;
}

public int getPageSize() {
return pageSize;
}

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

public int getRecordCount() {
return recordCount;
}

public void setRecordCount(int recordCount) {
this.recordCount = recordCount;
}

public int getBeginPageIndex() {
return beginPageIndex;
}

public void setBeginPageIndex(int beginPageIndex) {
this.beginPageIndex = beginPageIndex;
}

public int getEndPageIndex() {
return endPageIndex;
}

public void setEndPageIndex(int endPageIndex) {
this.endPageIndex = endPageIndex;
}
}