Java 实战项目之毕业设计管理系统的实现流程

一、项目简述

功能包括： 该系统不错分为学生，教师，管理员，教导主任四种角 色，包括学生管理，教师管理，学生选题，教师选题，主 任审核，管理员审核，开题报告，中期检查，论文提交， 文件管理等等非常不错。

二、项目运行

环境配置： jdk1.8 + tomcat8.5 + mysql + eclispe (intellij idea,eclispe,myeclispe,sts 都支持)

项目技术： jsp +spring + springmvc + mybatis + html+ css + javascript + jquery + ajax + layui+ maven等等。

用户管理操作控制层：

/**
 * 用户管理操作
 */
@controller
@requestmapping("/user")
public class usercontroller {
 
    @autowired
    private userservice userservice;
 
    /**
     * 用户添加页面
     * @return
     */
    @getmapping("/add")
    public string create() {
        return "user/add";
    }
 
    /**
     * 用户添加操作
     * @param user
     * @return
     */
    @postmapping("/add")
    @responsebody
    public map<string, object> add(@requestbody user user) {
        if(stringutils.isempty(user.getusername())){
            return mapcontrol.getinstance().error("请填写用户名").getmap();
        }
        if(stringutils.isempty(user.getname())){
            return mapcontrol.getinstance().error("请填写名称").getmap();
        }
        if(stringutils.isempty(user.getuserpwd())){
            return mapcontrol.getinstance().error("请填写密码").getmap();
        }
        int result = userservice.create(user);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    /**
     * 根据id删除
     * @param id
     * @return
     */
    @postmapping("/delete/{id}")
    @responsebody
    public map<string, object> delete(@pathvariable("id") integer id) {
        int result = userservice.delete(id);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    //批量删除
    @postmapping("/delete")
    @responsebody
    public map<string, object> delete(string ids) {
        int result = userservice.delete(ids);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    /**
     * 编辑用户信息操作
     * @param user
     * @return
     */
    @postmapping("/edit")
    @responsebody
    public map<string, object> edit(@requestbody user user) {
        if(stringutils.isempty(user.getusername())){
            return mapcontrol.getinstance().error("请填写用户名").getmap();
        }
        if(stringutils.isempty(user.getname())){
            return mapcontrol.getinstance().error("请填写名称").getmap();
        }
        if(stringutils.isempty(user.getuserpwd())){
            return mapcontrol.getinstance().error("请填写密码").getmap();
        }
        int result = userservice.update(user);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    /**
     * 根据id查询，跳转修改页面
     * @param id
     * @param modelmap
     * @return
     */
    @getmapping("/edit/{id}")
    public string edit(@pathvariable("id") integer id, modelmap modelmap) {
        user user = userservice.detail(id);
        modelmap.addattribute("user", user);
        return "user/edit";
    }
 
    //查询所有
    @postmapping("/query")
    @responsebody
    public map<string, object> query(@requestbody user user) {
        list<user> list = userservice.query(user);
        integer count = userservice.count(user);
        return mapcontrol.getinstance().success().page(list, count).getmap();
    }
 
    //跳转列表页面
    @getmapping("/list")
    public string list() {
        return "user/list";
    }
 
}

跳转首页判断以及数据展示图表：

@controller
public class indexcontroller {
 
    @autowired
    userservice userservice;
    @autowired
    teacherservice teacherservice;
    @autowired
    studentservice studentservice;
    @autowired
    clazzservice clazzservice;
    @autowired
    subjectservice subjectservice;
    @autowired
    courseservice courseservice;
    @autowired
    sectionservice sectionservice;
    @autowired
    scoreservice scoreservice;
 
    //跳转系统主页
    @getmapping("/index")
    public string login() {
        return "index";
    }
 
    //跳转用户基本信息页面
    @getmapping("/info")
    public string info() {
        return "info";
    }
 
    //跳转修改密码页面
    @getmapping("/pwd")
    public string pwd() {
        return "pwd";
    }
 
    //修改密码 根据旧密码来修改密码
    @postmapping("/pwd")
    @responsebody
    public map<string,object> pwd(string sourcepwd,string newpwd,string type,integer id) {
        //先判断类型
        if("1".equals(type)) {
            user user = userservice.detail(id);
            //比较原密码是否相同 注意：原密码也要加密后再进行比较，因为数据库中存储的是加密后的密码
            if(user.getuserpwd().equals(md5utils.getmd5(sourcepwd))) {
                user entity = new user();
                entity.setid(id);
                entity.setuserpwd(md5utils.getmd5(newpwd)); //主要要加密
                int result = userservice.update(entity);
                if(result <= 0) {
                    return mapcontrol.getinstance().error().getmap();
                } else {
                    return mapcontrol.getinstance().success().getmap();
                }
            } else {
                return mapcontrol.getinstance().error("原密码错误").getmap();
            }
        }
        if("2".equals(type)) {
            teacher teacher = teacherservice.detail(id);
            //比较原密码
            if(teacher.getteacherpwd().equals(md5utils.getmd5(sourcepwd))) {
                teacher entity = new teacher();
                entity.setid(id);
                entity.setteacherpwd(md5utils.getmd5(newpwd));
                int result = teacherservice.update(entity);
                if(result <= 0) {
                    return mapcontrol.getinstance().error().getmap();
                } else {
                    return mapcontrol.getinstance().success().getmap();
                }
            } else {
                return mapcontrol.getinstance().error("原密码错误").getmap();
            }
        }
        if("3".equals(type)) {
            student student = studentservice.detail(id);
            //比较原密码
            if(student.getstupwd().equals(md5utils.getmd5(sourcepwd))) {
                student entity = new student();
                entity.setid(id);
                entity.setstupwd(md5utils.getmd5(newpwd));
                int result = studentservice.update(entity);
                if(result <= 0) {
                    return mapcontrol.getinstance().error().getmap();
                } else {
                    return mapcontrol.getinstance().success().getmap();
                }
            } else {
                return mapcontrol.getinstance().error("原密码错误").getmap();
            }
        }
 
        return mapcontrol.getinstance().error().getmap();
    }
 
    //跳转系统主页（数据概览）
    @getmapping("/main")
    public string main(modelmap modelmap) {
        //1.系统数据概览
        list<clazz> clazzes = clazzservice.query(null);
        list<subject> subjects = subjectservice.query(null);
        list<teacher> teachers = teacherservice.query(null);
        list<course> courses = courseservice.query(null);
        list<section> sections = sectionservice.query(null);
        list<student> students = studentservice.query(null);
        modelmap.addattribute("clazzcnt",clazzes.size());
        modelmap.addattribute("subjectcnt",subjects.size());
        modelmap.addattribute("teachercnt",teachers.size());
        modelmap.addattribute("coursecnt",courses.size());
        modelmap.addattribute("studentcnt",students.size());
        modelmap.addattribute("sectioncnt",sections.size());
 
        //2.班级学生数量
        list<map<string,object>> maplist = new arraylist<>();
        for(clazz clazz : clazzes) {
            map<string,object> map = new hashmap<>();
            map.put("name",clazz.getclazzname()); //设置班级名称
            int cnt = 0;
            //统计学生数量
            for(student student : students) {
                if(student.getclazzid() == clazz.getid()) {
                    cnt++;
                }
            }
            map.put("cnt",cnt); //设置学生数量
            maplist.add(map);
        }
        modelmap.addattribute("maplist",maplist);
 
        //3.查询各科平均成绩（根据专业查询各科平均成绩）
        list<hashmap> maplist2 = scoreservice.queryavgscorebysection();
        modelmap.addattribute("maplist2",maplist2);
 
        return "main";
    }
 
}

公告管理控制器：

/**
 * 公告管理控制器
 */
@controller
@requestmapping("/notice")
public class noticecontroller {
 
 
    @autowired
    private noticeservice noticeservice;
 
    //跳转添加页面
    @getmapping("/add")
    public string add() {
        return "notice/add";
    }
 
    /**
     * 公告添加
     * @param notice
     * @return
     */
    @postmapping("/add")
    @responsebody
    public map<string, object> add(notice notice, httpservletrequest request) {
        if(stringutils.isempty(notice.gettitle())){
            return mapcontrol.getinstance().error("请填写公告标题").getmap();
        }
        if(stringutils.isempty(notice.getcontent())){
            return mapcontrol.getinstance().error("请填写公告内容").getmap();
        }
        user user = (user) request.getsession().getattribute("user");
        notice.setauthor(user.getusername());
        notice.setauth("1");
        int result = noticeservice.create(notice);
        if (result <= 0) {
            //新增失败
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    //根据id删除
    @postmapping("/delete/{id}")
    @responsebody
    public map<string, object> delete(@pathvariable("id") integer id) {
        int result = noticeservice.delete(id);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    //批量删除
    @postmapping("/delete")
    @responsebody
    public map<string, object> delete(string ids) {
        int result = noticeservice.delete(ids);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    /**
     * 修改公告操作
     * @param notice
     * @return
     */
    @postmapping("/edit")
    @responsebody
    public map<string, object> edit(@requestbody notice notice) {
        if(stringutils.isempty(notice.gettitle())){
            return mapcontrol.getinstance().error("请填写公告标题").getmap();
        }
        if(stringutils.isempty(notice.getcontent())){
            return mapcontrol.getinstance().error("请填写公告内容").getmap();
        }
        int result = noticeservice.update(notice);
        if (result <= 0) {
            return mapcontrol.getinstance().error().getmap();
        }
        return mapcontrol.getinstance().success().getmap();
    }
 
    //根据id查询，跳转修改页面
    @getmapping("/edit/{id}")
    public string edit(@pathvariable integer id, modelmap modelmap) {
        //查询要修改的老师
        notice notice = noticeservice.detail(id);
        modelmap.addattribute("notice", notice);
        return "notice/edit";
    }
    //根据id查询，跳转添加页面
    @getmapping("/look/{id}")
    public string look(@pathvariable integer id, modelmap modelmap) {
        notice notice = noticeservice.detail(id);
        modelmap.addattribute("notice", notice);
        return "notice/look";
    }
 
    //查询所有
    @postmapping("/query")
    @responsebody
    public map<string, object> query(@requestbody notice notice) {
        list<notice> list = noticeservice.query(notice);
        integer count = noticeservice.count(notice);
        return mapcontrol.getinstance().success().put("data", list).put("count", count).getmap();
    }
 
    //跳转列表页面
    @getmapping("/list")
    public string list() {
        return "notice/list";
    }
}

登陆用户判断业务控制层：

@controller
public class logincontroller {
 
    @autowired
    private userservice userservice;
    @autowired
    private teacherservice teacherservice;
    @autowired
    private studentservice studentservice;
 
    //跳转登录页面
    @getmapping("/login")
    public string login() {
        return "login";
    }
 
    //登录操作
    @postmapping("/login")
    @responsebody
    public map<string, object> login(string username, string password, string captcha, string type, httpsession session) {
        //判断用户名、密码、用户类型、验证码是否为空
        if (stringutils.isempty(username) || stringutils.isempty(password) || stringutils.isempty(captcha) || stringutils.isempty(type)) {
            return mapcontrol.getinstance().error("用户名或密码不能为空").getmap();
        }
        //获取系统生成的验证码
        string _captcha = (string) session.getattribute("captcha");
        //先判断验证码是否正确
        if (!(captcha.tolowercase()).equals(_captcha.tolowercase())) {
            //验证码错误
            return mapcontrol.getinstance().error("验证码错误").getmap();
        }
 
        //判断用户类型
        if ("1".equals(type)) { //管理员验证登录
            user user = userservice.login(username, md5utils.getmd5(password)); //对密码进行加密处理，因为数据库中存储的是加密后的密码
            if (user != null) {
                session.setattribute("user", user);
                session.setattribute("type", 1);
                return mapcontrol.getinstance().success().add("data", user).getmap();
            } else {
                return mapcontrol.getinstance().error("用户名或密码错误").getmap();
            }
        }
        if ("2".equals(type)) { //老师验证登录
            teacher teacher = teacherservice.login(username, md5utils.getmd5(password));
            if (teacher != null) {
                session.setattribute("user", teacher);
                session.setattribute("type", "2");
                return mapcontrol.getinstance().success().add("data", teacher).getmap();
            } else {
                return mapcontrol.getinstance().error("用户名或密码错误").getmap();
            }
        }
        if ("3".equals(type)) { //学生验证登录
            student student = studentservice.login(username, md5utils.getmd5(password));
            if (student != null) {
                session.setattribute("user", student);
                session.setattribute("type", "3");
                return mapcontrol.getinstance().success().add("data", student).getmap();
            } else {
                return mapcontrol.getinstance().error("用户名或密码错误").getmap();
            }
        }
        return mapcontrol.getinstance().getmap();
    }
 
}

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