SSH框架实现的学生管理系统

package com.stu.service.impl; import java.util.List; import org.springframework.transaction.annotation.Transactional; import com.stu.dao.SchoolDao; import com.stu.entity.PageBean; import com.stu.entity.School; import com.stu.service.SchoolService; /** * 操作School对象的业务类 * @author TF * */ @Transactional public class SchoolServiceImpl implements SchoolService { //注入对象 private SchoolDao schoolDao; public void setSchoolDao(SchoolDao schoolDao) { this.schoolDao = schoolDao; } /** * 分页查询所有的学校 */ public PageBean<School> findByPage(int currPage) { PageBean<School> pageBean = new PageBean<School>(); //封装当前页 pageBean.setCurrPage(currPage); //封装每页记录数 int pageSize = 5; pageBean.setPageSize(pageSize); //封装总记录数 int totalCount = schoolDao.findCount();//查询总记录数 pageBean.setTotalCount(totalCount); //封装总页数 double tc = totalCount; Double num = Math.ceil(tc / pageSize); pageBean.setTotalPage(num.intValue()); //封装查询到的当前页数据 int begin = (currPage - 1) * pageSize; List<School> list = schoolDao.findByPage(begin,pageSize); pageBean.setPageList(list); return pageBean; } /** * 添加学校 */ public void add(School school) { schoolDao.add(school); } }