專案背景

隨著互聯網和電子商務的快速發展，開發一個電影院訂票系統來幫助電影院對電影資訊，售票資訊進行統一化的資訊管理；

遇到的問題

在設計的程序中，需要解決以下的幾個問題：

電影院會有多個播放廳，從而在同一時間播放不同的電影來滿足客戶需求

每個廳的大小可能不同，即容納的人數不同

電影院會不斷引進新片

電影院會把電影安排在各個播放廳的不同時間段來進行播放，即會有一個排片表

一個客戶可能買一張或多張電影票，這些電影票可能會是不同廳，不同場次的電影

專案簡短介紹

電影院系統包含下面的一些模塊：

登錄
電影類別管理
電影資訊管理
放映大廳管理
員工資訊管理
放映資訊管理
售票資訊管理，用戶在線選座
收益管理
收入明細

專案環境

> 前端：html, css, js, layui, jquery等;
> 后端：java, spring，maven等
> 開發工具：支持eclipse或idea
> 資料庫：mysql
> 更多內容查看：http://projecthelp.top

部分核心代碼

import org.springframework.stereotype.Service;
import xyz.shiguangliang.mybatis.dao.UserMapper;

import xyz.shiguangliang.mybatis.domain.User;
import xyz.shiguangliang.service.UserService;
import xyz.shiguangliang.util.query.QueryInfo;

import javax.annotation.Resource;
import java.util.Date;
import java.util.List;
import java.util.Objects;

@Service
public class UserServiceImpl implements UserService {
    @Resource
    private UserMapper userMapper;

    //登錄
    @Override
    public User login(String username, String password) {
        User user = userMapper.selectLogin(username,password);
        if (user != null) {
            //登錄次數加一
            if (user.getIntimes() !=  null) {
                user.setIntimes(user.getIntimes() + 1);
            }else {
                user.setIntimes(1);
            }
            //更新登錄時間
            user.setLastlogin(new Date());
            return user;
        }
        return null;
    }

    //注冊
    @Override
    public boolean register(User user) {
        int i = 0;
        //檢測用戶是否存在
        User user1 = userMapper.selectUsername(user.getUsername());
        if (user1 == null) {
            i = userMapper.insert(user);
        }
        return i > 0;
    }

    //用戶串列
    @Override
    public QueryInfo getUserList(String query, Integer pagenum,Integer pagesize) {
        QueryInfo queryInfo = new QueryInfo();
        int start;
        int end;
        if (pagenum == null||pagesize == null){
            pagenum =0;
            pagesize = 3;
        }
        start = (pagenum-1)*pagesize;
        end = pagesize;
        int userSize = userMapper.selectUserListLimitSize(query,start,end);
        List<User> users = userMapper.selectUserListLimit(query,start,end);
        queryInfo.setList(users);
        queryInfo.setTotal(userSize);
        return queryInfo;
    }

    //洗掉用戶
    @Override
    public int deleteUser(Integer tid) {
        return userMapper.deleteByPrimaryKey(tid);
    }

    //通過id查找用戶
    @Override
    public User findById(Integer tid) {
        return userMapper.selectByPrimaryKey(tid);
    }



    //更新用戶
    @Override
    public int updateUser(User user) {
        if (user.getPassword()==null|| Objects.equals(user.getPassword(), "")){
            user.setPassword(userMapper.selectByPrimaryKey(user.getTid()).getPassword());
        }
        return userMapper.updateByPrimaryKey(user);
    }

    //通過用戶名查找用戶
    @Override
    public User findByUsername(String username) {
        return userMapper.selectUsername(username);
    }

    //獲取用戶權限
    @Override
    public int getPower(String username) {
        return userMapper.selectUsername(username).getPower();
    }
}

useMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="xyz.shiguangliang.mybatis.dao.UserMapper">
  <resultMap id="BaseResultMap" type="xyz.shiguangliang.mybatis.domain.User">
    <id column="tid" jdbcType="INTEGER" property="tid" />
    <result column="username" jdbcType="VARCHAR" property="username" />
    <result column="password" jdbcType="VARCHAR" property="password" />
    <result column="teachername" jdbcType="VARCHAR" property="teachername" />
    <result column="dno" jdbcType="INTEGER" property="dno" />
    <result column="power" jdbcType="INTEGER" property="power" />
    <result column="intimes" jdbcType="INTEGER" property="intimes" />
    <result column="lastlogin" jdbcType="TIMESTAMP" property="lastlogin" />
  </resultMap>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from teacher
    where tid = #{tid,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="xyz.shiguangliang.mybatis.domain.User">
    insert into teacher (tid, username, password, 
      teachername, dno, power, 
      intimes, lastlogin)
    values (#{tid,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR}, 
      #{teachername,jdbcType=VARCHAR}, #{dno,jdbcType=INTEGER}, #{power,jdbcType=INTEGER}, 
      #{intimes,jdbcType=INTEGER}, #{lastlogin,jdbcType=TIMESTAMP})
  </insert>
  <update id="updateByPrimaryKey" parameterType="xyz.shiguangliang.mybatis.domain.User">
    update teacher
    set username = #{username,jdbcType=VARCHAR},
      password = #{password,jdbcType=VARCHAR},
      teachername = #{teachername,jdbcType=VARCHAR},
      dno = #{dno,jdbcType=INTEGER},
      power = #{power,jdbcType=INTEGER},
      intimes = #{intimes,jdbcType=INTEGER},
      lastlogin = #{lastlogin,jdbcType=TIMESTAMP}
    where tid = #{tid,jdbcType=INTEGER}
  </update>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select tid, username, password, teachername, dno, power, intimes, lastlogin
    from teacher
    where tid = #{tid,jdbcType=INTEGER}
  </select>
  <select id="selectAll" resultMap="BaseResultMap">
    select tid, username, password, teachername, dno, power, intimes, lastlogin
    from teacher
  </select>
    <select id="selectLogin" resultType="xyz.shiguangliang.mybatis.domain.User">
        select tid, username, password, teachername, dno, power, intimes, lastlogin
        from teacher
        where username = #{username} and password = #{password}
    </select>
  <select id="selectUsername" resultType="xyz.shiguangliang.mybatis.domain.User">
    select tid, username, password, teachername, dno, power, intimes, lastlogin
        from teacher
        where username = #{username}
  </select>
  <select id="selectUserListLimit" resultType="xyz.shiguangliang.mybatis.domain.User">
    select tid, username, password, teachername, dno, power, intimes, lastlogin
    from teacher
    where
    /*條件判斷*/
    <if test="#{query} != null and #{query} != ''">
      /*模糊查詢*/
      <bind name="query2" value="'%' + query + '%'"/>
      username like #{query2}
    </if>
    LIMIT #{start},#{end}
  </select>
  <select id="selectUserListLimitSize" resultType="java.lang.Integer">
    select count(*)
    from teacher
    where
    /*條件判斷*/
    <if test="#{query} != null and #{query} != ''">
      /*模糊查詢*/
      <bind name="query2" value="'%' + query + '%'"/>
      username like #{query2}
    </if>
  </select>
</mapper>