精品--教务管理系统（毕业设计）.zip

package com.xiaozhi.serviceImpl; import com.alibaba.dubbo.common.utils.CollectionUtils; import com.google.common.base.Strings; import com.google.common.collect.Lists; import com.xiaozhi.dao.mysql.CourseMySqlDao; import com.xiaozhi.dao.mysql.StudentCourseDao; import com.xiaozhi.dao.redis.CourseRedisDao; import com.xiaozhi.model.CourseVo; import com.xiaozhi.model.StudentVo; import com.xiaozhi.model.mysql.CourseDo; import com.xiaozhi.model.mysql.StudentCourseDo; import com.xiaozhi.result.ResultCode; import com.xiaozhi.result.resultImpl.ServiceResult; import com.xiaozhi.service.CourseService; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.BeanUtils; import org.springframework.stereotype.Service; import javax.annotation.Resource; import java.util.Date; import java.util.List; import java.util.Timer; import java.util.TimerTask; /** * Created by 小智 on 2017/4/27 0027. */ @Slf4j @Service("courseServiceImpl") public class CourseServiceImpl implements CourseService{ @Resource private CourseRedisDao courseRedisDao; @Resource private CourseMySqlDao courseMySqlDao; @Resource private StudentCourseDao studentCourseDao; @Override public ServiceResult<List<CourseVo>> findList(StudentVo studentVo){ if (studentVo.isIllegal()) { log.warn("参数studentVo不合法，studentVo:{}", studentVo); return new ServiceResult<>(ResultCode.PARAMETER_ILLEGAL); } List<CourseDo> courseDos = courseRedisDao.findAll(); List<CourseVo> courseVos = Lists.newArrayList(); courseDos.forEach(courseDo -> { //一般会转换数据库的值为显示的值,在此没有进行，而是直接保存 int remain = courseRedisDao.findCourseNumber(courseDo.getId()); //解决高并发数据为负为题，只是显示所以不影响数据正确性 if (remain < 0) remain = 0; CourseVo courseVo = new CourseVo(); BeanUtils.copyProperties(courseDo, courseVo); courseVo.setRemain(remain); courseVo.setSelected(courseVo.getTotal() - remain); courseVos.add(courseVo); }); return new ServiceResult<>(courseVos); } @Override public ServiceResult<Void> update(StudentVo studentVo, String courseId, boolean isAdd){ if (studentVo.isIllegal() && Strings.isNullOrEmpty(courseId)) { log.warn("参数studentVo不合法，studentVo:{},courseId:{}", studentVo, courseId); return new ServiceResult<>(ResultCode.PARAMETER_ILLEGAL); } //是否到选课时间 -1：未开始； 0：开始； 1：已结束 int isSelectedTime = courseRedisDao.isSelectedTime(); if (isSelectedTime == -1) { log.warn("选课时间未到!"); return new ServiceResult<>(ResultCode.COURSE_SELECTED_TIME); } if (isSelectedTime == 1) { log.warn("选课已结束!"); return new ServiceResult<>(ResultCode.COURSE_SELECTED_OVER); } boolean isSucceed = courseRedisDao.update(courseId, isAdd); if (isSucceed) { //学生表存储 mysql StudentCourseDo studentCourseDo = new StudentCourseDo(); studentCourseDo.setStudentId(studentVo.getId()); studentCourseDo.setCourseId(courseId); studentCourseDao.save(studentCourseDo); return new ServiceResult<>(); } else { return new ServiceResult<>(ResultCode.COURSE_HAD_NONE); } } @Override public ServiceResult<List<CourseVo>> listStudentSelected(StudentVo studentVo){ if (studentVo.isIllegal()) { log.warn("参数studentVo不合法，studentVo:{}", studentVo); return new ServiceResult<>(ResultCode.PARAMETER_ILLEGAL); } List<CourseVo> courseVos = Lists.newArrayList(); List<StudentCourseDo> studentCourseDos = studentCourseDao.listByStudentId(studentVo.getId()); if (CollectionUtils.isEmpty(studentCourseDos)) { log.info("该学生还没有选课,studentVo:{}", studentVo); return new ServiceResult<>(courseVos); } studentCourseDos.forEach(studentCourseDo -> { CourseDo courseDo = courseMySqlDao.getById(studentCourseDo.getCourseId()); CourseVo courseVo = new CourseVo(); BeanUtils.copyProperties(courseDo, courseVo); courseVos.add(courseVo); }); return new ServiceResult<>(courseVos); } @Override public ServiceResult<Void> addCourse(StudentVo studentVo, List<CourseVo> courseVos){ for (CourseVo courseVo : courseVos) { CourseDo courseDo = new CourseDo(); BeanUtils.copyProperties(courseVo, courseDo); courseDo.setSelected(0); courseDo.setRemain(courseDo.getTotal()); courseMySqlDao.save(courseDo); //Mysql保存 courseRedisDao.save(courseDo); //Redis保存 } return new ServiceResult<>(); } @Override public ServiceResult<Void> setCourseTime(StudentVo studentVo, String startTime, String endTime){ courseRedisDao.addTime(startTime, endTime); //设置选课结束时间同步数据到MYsql redisToMySql(endTime, studentVo); return new ServiceResult<>(); } @Override public ServiceResult<List<CourseVo>> listManageCourse(StudentVo studentVo){ List<CourseDo> courseDos = courseMySqlDao.listAll(); List<CourseVo> courseVos = Lists.newArrayList(); courseDos.forEach(courseDo -> { CourseVo courseVo = new CourseVo(); BeanUtils.copyProperties(courseDo, courseVo); courseVos.add(courseVo); }); return new ServiceResult<>(courseVos); } private void redisToMySql(String time, StudentVo studentVo){ Date date = new Date(new Long(time)); Timer timer = new Timer(); timer.schedule(new MyTimerTask(studentVo), date); } private class MyTimerTask extends TimerTask{ private StudentVo studentVo; public MyTimerTask(StudentVo studentVo){ this.studentVo = studentVo; } @Override public void run(){ List<CourseVo> courseVos = findList(studentVo).getData(); List<CourseDo> courseDos = Lists.newArrayList(); courseVos.forEach(courseVo -> { CourseDo courseDo = new CourseDo(); BeanUtils.copyProperties(courseVo, courseDo); courseDos.add(courseDo); }); courseMySqlDao.updateBatch(courseDos); } } }