1、系统技术栈：

后端：SpringBoot
前端：vue+element等
开发工具：IDEA
数据库：MySQL
JDK版本：jdk1.8

本系统有三种角色，分别为学生、管理员、宿舍管理员

2、系统登录页面：

3、学生登录页面：

3.1我的宿舍

3.2申请调宿

3.3报修申请

4、管理员页面

4.1宿舍管理

4.2报修管理

4.3申请管理

4.4访客管理

5、系统管理员

6、主要代码截图

package com.example.springboot.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.springboot.entity.Repair;
import com.example.springboot.mapper.RepairMapper;
import com.example.springboot.service.RepairService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;


@Service
public class RepairServiceImpl extends ServiceImpl<RepairMapper, Repair> implements RepairService {

    /**
     * 注入DAO层对象
     */
    @Resource
    private RepairMapper repairMapper;

    /**
     * 添加订单
     */
    @Override
    public int addNewOrder(Repair repair) {
        int insert = repairMapper.insert(repair);
        return insert;
    }

    /**
     * 查找订单
     */
    @Override
    public Page find(Integer pageNum, Integer pageSize, String search) {
        Page page = new Page<>(pageNum, pageSize);
        QueryWrapper<Repair> qw = new QueryWrapper<>();
        qw.like("title", search);
        Page orderPage = repairMapper.selectPage(page, qw);
        return orderPage;
    }

    @Override
    public Page individualFind(Integer pageNum, Integer pageSize, String search, String name) {
        Page page = new Page<>(pageNum, pageSize);
        QueryWrapper<Repair> qw = new QueryWrapper<>();
        qw.like("title", search);
        qw.eq("repairer", name);
        Page orderPage = repairMapper.selectPage(page, qw);
        return orderPage;
    }

    /**
     * 更新订单
     */
    @Override
    public int updateNewOrder(Repair repair) {
        int i = repairMapper.updateById(repair);
        return i;
    }

    /**
     * 删除订单
     */
    @Override
    public int deleteOrder(Integer id) {
        int i = repairMapper.deleteById(id);
        return i;
    }

    /**
     * 首页顶部：报修统计
     */
    @Override
    public int showOrderNum() {
        QueryWrapper<Repair> qw = new QueryWrapper<>();
        int orderCount = Math.toIntExact(repairMapper.selectCount(qw));
        return orderCount;
    }
}

package com.example.springboot.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.springboot.common.JudgeBedName;
import com.example.springboot.entity.AdjustRoom;
import com.example.springboot.entity.DormRoom;
import com.example.springboot.mapper.DormRoomMapper;
import com.example.springboot.service.DormRoomService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

import static com.example.springboot.common.CalPeopleNum.calNum;


@Service
public class DormRoomImpl extends ServiceImpl<DormRoomMapper, DormRoom> implements DormRoomService {

    @Resource
    private DormRoomMapper dormRoomMapper;

    /**
     * 首页顶部：空宿舍统计
     */
    @Override
    public int notFullRoom() {
        QueryWrapper<DormRoom> qw = new QueryWrapper<>();
        qw.lt("current_capacity", 4);
        int notFullRoomNum = Math.toIntExact(dormRoomMapper.selectCount(qw));
        return notFullRoomNum;
    }

    /**
     * 添加房间
     */
    @Override
    public int addNewRoom(DormRoom dormRoom) {
        int insert = dormRoomMapper.insert(dormRoom);
        return insert;
    }

    /**
     * 查找房间
     */
    @Override
    public Page find(Integer pageNum, Integer pageSize, String search) {
        Page page = new Page<>(pageNum, pageSize);
        QueryWrapper<DormRoom> qw = new QueryWrapper<>();
        qw.like("Dormroom_id", search);
        Page roomPage = dormRoomMapper.selectPage(page, qw);
        return roomPage;
    }

    /**
     * 更新房间
     */
    @Override
    public int updateNewRoom(DormRoom dormRoom) {
        int i = dormRoomMapper.updateById(dormRoom);
        return i;
    }

    /**
     * 删除房间
     */
    @Override
    public int deleteRoom(Integer dormRoomId) {
        int i = dormRoomMapper.deleteById(dormRoomId);
        return i;
    }

    /**
     * 删除床位上的学生信息
     */
    @Override
    public int deleteBedInfo(String bedName, Integer dormRoomId, int calCurrentNum) {
        UpdateWrapper updateWrapper = new UpdateWrapper();
        updateWrapper.eq("dormroom_id", dormRoomId);
        updateWrapper.set(bedName, null);
        updateWrapper.set("current_capacity", calCurrentNum - 1);
        int update = dormRoomMapper.update(null, updateWrapper);
        return update;

    }

    /**
     * 床位信息，查询该学生是否已由床位
     */
    @Override
    public DormRoom judgeHadBed(String username) {
        QueryWrapper qw = new QueryWrapper();
        qw.eq("first_bed", username);
        qw.or();
        qw.eq("second_bed", username);
        qw.or();
        qw.eq("third_bed", username);
        qw.or();
        qw.eq("fourth_bed", username);
        DormRoom dormRoom = dormRoomMapper.selectOne(qw);
        return dormRoom;
    }

    /**
     * 主页 住宿人数
     */
    @Override
    public Long selectHaveRoomStuNum() {
        QueryWrapper<DormRoom> qw1 = new QueryWrapper<>();
        qw1.isNotNull("first_bed");
        Long first_bed = dormRoomMapper.selectCount(qw1);

        QueryWrapper<DormRoom> qw2 = new QueryWrapper<>();
        qw2.isNotNull("second_bed");
        Long second_bed = dormRoomMapper.selectCount(qw2);

        QueryWrapper<DormRoom> qw3 = new QueryWrapper<>();
        qw3.isNotNull("third_bed");
        Long third_bed = dormRoomMapper.selectCount(qw3);

        QueryWrapper<DormRoom> qw4 = new QueryWrapper<>();
        qw4.isNotNull("fourth_bed");
        Long fourth_bed = dormRoomMapper.selectCount(qw4);

        Long count = first_bed + second_bed + third_bed + fourth_bed;
        return count;
    }

    /**
     * 获取每栋宿舍学生总人数
     */
    @Override
    public Long getEachBuildingStuNum(int dormBuildId) {

        QueryWrapper<DormRoom> qw1 = new QueryWrapper<>();
        qw1.eq("dormbuild_id", dormBuildId);
        qw1.isNotNull("first_bed");
        Long first_bed = dormRoomMapper.selectCount(qw1);

        QueryWrapper<DormRoom> qw2 = new QueryWrapper<>();
        qw2.eq("dormbuild_id", dormBuildId);
        qw2.isNotNull("second_bed");
        Long second_bed = dormRoomMapper.selectCount(qw2);

        QueryWrapper<DormRoom> qw3 = new QueryWrapper<>();
        qw3.eq("dormbuild_id", dormBuildId);
        qw3.isNotNull("third_bed");
        Long third_bed = dormRoomMapper.selectCount(qw3);

        QueryWrapper<DormRoom> qw4 = new QueryWrapper<>();
        qw4.eq("dormbuild_id", dormBuildId);
        qw4.isNotNull("fourth_bed");
        Long fourth_bed = dormRoomMapper.selectCount(qw4);

        Long count = first_bed + second_bed + third_bed + fourth_bed;

        return count;
    }

    /**
     * 根据调宿申请表对房间表内的学生床位进行调整
     */
    @Override
    public int adjustRoomUpdate(AdjustRoom adjustRoom) {
        //调宿人
        String username = adjustRoom.getUsername();
        //当前房间号
        int currentRoomId = adjustRoom.getCurrentRoomId();
        //当前床位名称
        String currentBedName = JudgeBedName.getBedName(adjustRoom.getCurrentBedId());
        //目标房间号
        int towardsRoomId = adjustRoom.getTowardsRoomId();
        //目标目标房间号
        String towardsBedName = JudgeBedName.getBedName(adjustRoom.getTowardsBedId());

        QueryWrapper qw = new QueryWrapper();
        qw.eq("dormroom_id", currentRoomId);
        qw.isNotNull(currentBedName);
        DormRoom dormRoom1 = dormRoomMapper.selectOne(qw);

        if (dormRoom1 == null) {
            return -2;
        }
        int currentCapacity1 = calNum(dormRoom1);

        UpdateWrapper uw1 = new UpdateWrapper();
        uw1.eq("dormroom_id", currentRoomId);
        uw1.set(currentBedName, null);
        uw1.set("current_capacity", currentCapacity1 - 1);
        int result1 = dormRoomMapper.update(null, uw1);

        DormRoom dormRoom2 = dormRoomMapper.selectById(towardsRoomId);
        int currentCapacity2 = calNum(dormRoom2);

        if (result1 == 1) {
            UpdateWrapper uw2 = new UpdateWrapper();
            uw2.eq("dormroom_id", towardsRoomId);
            uw2.set(towardsBedName, username);
            uw2.set("current_capacity", currentCapacity2 + 1);
            int result2 = dormRoomMapper.update(null, uw2);
            return result2;
        }
        return -1;
    }


    /**
     * 检查该房间是否满了
     */
    @Override
    public DormRoom checkRoomState(Integer dormRoomId) {
        QueryWrapper qw = new QueryWrapper();
        qw.eq("dormroom_id", dormRoomId);
        qw.lt("current_capacity", 4);
        DormRoom dormRoom = dormRoomMapper.selectOne(qw);
        return dormRoom;
    }

    /**
     * 检查该房间是否存在
     */
    @Override
    public DormRoom checkRoomExist(Integer dormRoomId) {
        DormRoom dormRoom = dormRoomMapper.selectById(dormRoomId);
        return dormRoom;
    }


    /**
     * 检查床位是否有人
     */
    @Override
    public DormRoom checkBedState(Integer dormRoomId, int bedNum) {
        QueryWrapper qw = new QueryWrapper();
        qw.eq("dormroom_id", dormRoomId);
        qw.isNull(JudgeBedName.getBedName(bedNum));
        DormRoom dormRoom = dormRoomMapper.selectOne(qw);
        return dormRoom;
    }


}

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