package com.imooc.entity;

/**

 * 分页对应的实体类

 */

public class Page {

/**

* 总条数

*/

private int totalNumber;

/**

* 当前第几页

*/

private int currentPage;

/**

* 总页数

*/

private int totalPage;

/**

* 每页显示条数

*/

private int pageNumber = 5;

/**

* 数据库中limit的参数，从第几条开始取

*/

private int dbIndex;

/**

* 数据库中limit的参数，一共取多少条

*/

private int dbNumber;

/**

* 根据当前对象中属性值计算并设置相关属性值

*/

public void count() {

// 计算总页数

int totalPageTemp = this.totalNumber / this.pageNumber;

int plus = (this.totalNumber % this.pageNumber) == 0 ? 0 : 1;

totalPageTemp = totalPageTemp + plus;

if(totalPageTemp <= 0) {

totalPageTemp = 1;

}

this.totalPage = totalPageTemp;

// 设置当前页数

// 总页数小于当前页数，应将当前页数设置为总页数

if(this.totalPage < this.currentPage) {

this.currentPage = this.totalPage;

}

// 当前页数小于1设置为1

if(this.currentPage < 1) {

this.currentPage = 1;

}

// 设置limit的参数

this.dbIndex = (this.currentPage - 1) * this.pageNumber;

this.dbNumber = this.pageNumber;

}

public int getTotalNumber() {

return totalNumber;

}

public void setTotalNumber(int totalNumber) {

this.totalNumber = totalNumber;

this.count();

}

public int getCurrentPage() {

return currentPage;

}

public void setCurrentPage(int currentPage) {

this.currentPage = currentPage;

}

public int getTotalPage() {

return totalPage;

}

public void setTotalPage(int totalPage) {

this.totalPage = totalPage;

}

public int getPageNumber() {

return pageNumber;

}

public void setPageNumber(int pageNumber) {

this.pageNumber = pageNumber;

this.count();

}

public int getDbIndex() {

return dbIndex;

}

public void setDbIndex(int dbIndex) {

this.dbIndex = dbIndex;

}

public int getDbNumber() {

return dbNumber;

}

public void setDbNumber(int dbNumber) {

this.dbNumber = dbNumber;

}

}