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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