分页逻辑类

import java.util.List;public class PagingEntity {/** * 总页数 * dateCount=10  every=3 * 查询的总条数%每页显示的条数等不等于0？查询的总条数/每页显示的条数否则查询的总条数/每页显示的条数+1 * totalCount=dateCount%every==0？dateCount/every:(dateCount/every+1) */private int dateCount;/** * 数据库查询的总条数 */private int total; /** * 每页显示的条 */private int every;/** * 当前页 *  */private int current;/** * 上一页 * previousPage=current==1?1:(current-1); */private int previousPage;/** * 下一页 * 当前页小于总页数，当前页+1否则等于当前页 * nextPage=current<totalCount?current+1:current; */private int nextPage;/** *开始索引= 当前页-1*每页显示的条数+1 * beginIndex=(current-1)*every+1 *  *结束索引= 每页显示的条数*当前页 * endIndex=every*current; */private int beginIndex;private int endIndex;/** * 用来存储EmpServiceImp类中query查询方法中返回的list集合 */private List rows;public int getDateCount() {return dateCount;}public void setDateCount(int dateCount) {this.dateCount = dateCount;}public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public List getRows() {return rows;}public void setRows(List rows) {this.rows = rows;}public int getEvery() {return every;}public void setEvery(int every) {this.every = every;}public int getCurrent() {return current;}public void setCurrent(int current) {this.current = current;}public int getPreviousPage() {return previousPage;}public void setPreviousPage(int previousPage) {this.previousPage = previousPage;}public int getNextPage() {return nextPage;}public void setNextPage(int nextPage) {this.nextPage = nextPage;}public int getBeginIndex() {return beginIndex;}public void setBeginIndex(int beginIndex) {this.beginIndex = beginIndex;}public int getEndIndex() {return endIndex;}public void setEndIndex(int endIndex) {this.endIndex = endIndex;}}

实体类

调用类逻辑

public class ComputePag {/** *  * @param dateCount总页数 * @param current当前页 * @param every每页显示的条数 * 这三个都是传过来的值 */public static PagingEntity computeMethod(int current,int every,int dateCount){PagingEntity pe =new PagingEntity();//在把这三个值设入PagingEntity类中对应的set里pe.setDateCount(dateCount);pe.setCurrent(current);pe.setEvery(every);//总页数=（数据库查询的总数%每页显示的条数==0？数据库查询的总数/每页显示的条数：（数据库查询的总数/每页显示的条数+1））int totalCount=(dateCount%every==0?dateCount/every:(dateCount/every+1));//下一页=（当前页<总页数？当前页+1：当前页）int nextPage=(current<totalCount?current+1:current);//上一页=（当前页==1？当前页：当前页-1）int previousPage=(current==1?current:current-1);//开始索引= （当前页-1）*每页显示的条数+1int beginIndex=(current-1)*every+1;//结束索引= 当前页*每页显示的条数int endIndex=current*every;pe.setTotalCount(totalCount);pe.setNextPage(nextPage);pe.setPreviousPage(previousPage);pe.setBeginIndex(beginIndex);pe.setEndIndex(endIndex);//返回PagingEntity pe实体类return pe;}}