Java实战之课程在线学习系统的实现

目录

• 一、前言
• 项目介绍
• 项目运行
• 二、效果图展示
• 三、核心代码
• 用户管理控制层
• 角色管理控制层
• 课程管理控制层

一、前言

项目介绍

采用SpringBoot+Spring+Mybatis+Thyeleaf实现的在线学习系统，一共2个身份。

管理员登录系统后可以管理所有用户信息，管理角色信息，添加修改管理课件信息，学生学习培训批次管理，成绩导入管理

学生登录系统后可以查询自己的个人信息，查询课件列表学习，查询我的培训记录，查询自己的成绩

采用SpringBoot框架实现 前台模板用的thymeleaf 数据库层采用mybatis框架 注解模式

upload文件夹放入D盘根目录！

项目运行

登录地址： http://localhost:8080/th/login

管理员账号和密码： admin     admin

学生登录账号： 1314 密码： 123456

二、效果图展示

三、核心代码

用户管理控制层

@Controller
@RequestMapping("/User")
public class UserController {

	@Autowired
	private UserService userService;

	@Autowired
	private PowerService powerService;

	@Autowired
	private RoleService roleService;

	@Autowired
	private NoticeService noticeService;

	@RequestMapping("/Main")
	public String res(HttpServletRequest request){
		String time = DateUtil.getStringToday();
		request.getSession().setAttribute("time", time);

		Notice notice = new Notice();

		List<Notice> list = noticeService.queryAll(notice);

		notice = list.get(0);

		User user = userService.selectByPrimaryKey(notice.getUserid());

		notice.setUserid(user.getName());
		request.getSession().setAttribute("notice", notice);

		return "Main";
	}

	@RequestMapping("/changePa")
	public String res1(){
		return "changePass";
	}

	@RequestMapping("/Login")
	public ModelAndView login(HttpServletRequest request,String id,String password) throws Exception{

		ModelAndView mav = new ModelAndView();

		User user1 = userService.selectByPrimaryKey(id);

		if(user1 == null || !password.equals(user1.getPassword())){
			mav.setViewName("index");
		    request.getSession().setAttribute("info", "error");
			return mav;
		}else{
			Role role = new Role();
			role.setRoleid(user1.getRoleid());
			List<Role> list =roleService.QueryAll(role);
			role =list.get(0);
			request.getSession().setAttribute("roleName", role.getRolename());
			Power power = powerService.selectByPrimaryKey(role.getPowerid());

			if(!StringUtil.isNullOrEmpty(power.getPower())){
				request.getSession().setAttribute("power", power.getPower());
			}

			String time = DateUtil.getStringToday();
			request.getSession().setAttribute("time", time);
			request.getSession().setAttribute("user", user1);
			mav.setViewName("redirect:/User/Main");
		}
		return mav;
	}

	@RequestMapping("/updateStudent")
	public String update(User user){
		userService.updateByPrimaryKey(user);
		return "redirect:/User/student";
	}

	@RequestMapping("/updateTeacher")
	public String updatet(User user){
		userService.updateByPrimaryKey(user);
		return "redirect:/User/teacher";
	}

	@RequestMapping("/updatePa")
	public String updatePa(String userID,String password){
		User user = new User();
		System.out.println(userID);
		User user1 = userService.selectByPrimaryKey(userID);
		user1.setPassword(password);
		userService.updateByPrimaryKey(user1);
		return "Main";
	}

	@RequestMapping("/delete")
	public String delete(String ID){
		userService.deleteByPrimaryKey(ID);
		return "redirect:/User/queryAll";
	}

	@RequestMapping("/teacher")
	public String QueryAllTeacher(HttpServletRequest request,User user){

		List<User> list = userService.QueryAllTeacher(user);
		request.setAttribute("list", list);

	   if(null != user.getName()){
			request.setAttribute("name", user.getName());
		}
	   if(null != user.getMobile()){
			request.setAttribute("mobile", user.getMobile());
		}
		return "teacher";
	}

	@ResponseBody
	@RequestMapping("/jsonteacher")
	public String QueryAllTeacherjson(HttpServletRequest request,User user){

		List<User> list = userService.QueryAllTeacher(user);
		JSONObject json = new JSONObject();

		return json.toJSONString(list);
	}

	@RequestMapping("/student")
	public String QueryAllStudent(HttpServletRequest request,User user){

		List<User> list = userService.QueryAllStudent(user);
		request.setAttribute("list", list);

		if(null != user.getName()){
			request.setAttribute("name", user.getName());
		}
		if(null != user.getMobile()){
			request.setAttribute("mobile", user.getMobile());
		}
		return "student";
	}

	@RequestMapping("/addteacher")
	public String  addUser(User user){

	    String passWord = "123456";
		user.setPassword(passWord);
		user.setType(Constans.TEACHER);
		userService.insert(user);
		return "redirect:/User/teacher";
	}

	@RequestMapping("/addstudent")
	public String  addStudent(User user){

		String passWord = "123456";
		user.setPassword(passWord);
		user.setType(Constans.STUDENT);
		userService.insert(user);
		return "redirect:/User/student";
	}

	@ResponseBody
	@RequestMapping("/queryOne")
	public String queryOne(String ID){
		User user = new User();
		user.setId(ID);
		List<User> list = userService.QueryAll(user);
		user = list.get(0);
		JSONObject json = new JSONObject();
		String data = json.toJSONString(user);

		return data;
	}

	@RequestMapping("/quit")
	public ModelAndView quit(HttpServletRequest request) throws Exception{
		ModelAndView mav = new ModelAndView();
		HttpSession session1 = request.getSession();
		session1.invalidate();
		request.getSession().setAttribute("info", "quit");
		mav.setViewName("index");

		return mav;
	}

}

角色管理控制层

@Controller
@RequestMapping("/Role")
public class RoleController {

	@Autowired
	private RoleService depotService;

	@Autowired
	private PowerService powerService;

	@RequestMapping("/update")
	public String update(String id,String rolename,String powerContent){
		Role role = new Role();
		role.setRoleid(id);
		role.setRolename(rolename);
		depotService.update(role);
		List<Role> list = depotService.QueryAll(role);
		Role role1 = list.get(0);
		Power power = new Power();
		if(powerContent.indexOf("110") != -1){
			powerContent = powerContent + ",1100";
		}
		if(powerContent.indexOf("120") != -1){
			powerContent = powerContent + ",1200";
		}
		if(powerContent.indexOf("130") != -1){
			powerContent = powerContent + ",1300";
		}
		if(powerContent.indexOf("140") != -1){
			powerContent = powerContent + ",1400";
		}
		if(powerContent.indexOf("150") != -1){
			powerContent = powerContent + ",1500";
		}
		power.setPower(powerContent);
		power.setRoleid(role1.getPowerid());
		powerService.update(power);
		return "redirect:/Role/queryAll";
	}

	@RequestMapping("/delete")
	public String delete(String ID){
		depotService.deleteByPrimaryKey(ID);
		return "redirect:/Role/queryAll";
	}

	@RequestMapping("/queryAll")
	public String queryAll(HttpServletRequest request,Role role){

		List<Role> list = depotService.QueryAll(role);
		request.setAttribute("list", list);

	   if(null != role.getRolename()){
			request.setAttribute("rolename", role.getRolename());
		}
		return "Role";
	}

	@RequestMapping("/add")
	public String  add(String roleid,String rolename,String powerContent){
		Power power1 = new Power();
		Role role = new Role();
		String powerid = String.valueOf(Math.random()).substring(2, 8);
		role.setRoleid(String.valueOf(Math.random()).substring(2, 6));
		role.setPowerid(powerid);
		role.setRolename(rolename);

		power1.setPower(powerContent);
		power1.setRoleid(powerid);
		power1.setId(String.valueOf(Math.random()).substring(2, 8));

		powerService.insert(power1);
		depotService.insert(role);
		return "redirect:/Role/queryAll";
	}

	@ResponseBody
	@RequestMapping("/queryOne")
	public String queryOne(String ID){
		JSONObject json = new JSONObject();
		Role depot = new Role();
		Power power = new Power();
		power.setId(ID);
		System.out.println(ID);
		depot.setRoleid(ID);

		List<Role> list = depotService.QueryAll(depot);

		Role role1 = list.get(0);
		Power power1 = powerService.selectByPrimaryKey(role1.getPowerid());
		String name = role1.getRolename();

		role1.setPowerid(power1.getPower());

		String data = json.toJSONString(role1);

		return data;
	}

	@ResponseBody
	@RequestMapping("/getAll")
	public String getAll(Role role){
		JSONObject json = new JSONObject();
		List<Role> list = depotService.QueryAll(role);

		String jsonq = json.toJSONString(list);

		System.out.println(jsonq);
		return jsonq;
	}

}

课程管理控制层

@Controller
@RequestMapping("/Course")
public class CourseController {

    @Autowired
    private CourseService courseService;
    @Autowired
    private CurelationService curelationService;

    @Autowired
    private CoursecommentService coursecommentService;

    @ResponseBody
    @RequestMapping("/queryOneCom")
    public String queryOneCom(String ID){
        Coursecomment course = new Coursecomment();
        course.setId(ID);
        System.out.println("===================================="+ID);
        List<Coursecomment> list = coursecommentService.queryAll(course);
        course = list.get(0);
        JSONObject json = new JSONObject();
        return json.toJSONString(course);
    }

    @RequestMapping("addComment")
    public String addComment(HttpServletRequest request, Coursecomment coursecomment){
        User user = (User) request.getSession().getAttribute("user");
        coursecomment.setCreatetime(DateUtil.getStringToday());
        coursecomment.setUserid(user.getName());
        coursecomment.setId(String.valueOf(Math.random()).substring(2,10));
        coursecommentService.insert(coursecomment);
        return "redirect:/Course/suggeetion";
    }

    @ResponseBody
    @RequestMapping("jsoncourse")
    public String jsoncourse(HttpServletRequest request, Curelation course){
        User user = (User) request.getSession().getAttribute("user");
        /*String type = "1";
        if ("1".equals(user.getType())){
            type="2";
        }
        course.setType(type);
        course.setUserid(user.getId());*/
        List<Curelation> curelationList = curelationService.queryAll(course);
        List<Course> dataList = new ArrayList<>();
        for (int i = 0; i < curelationList.size(); i++) {
            Course curelation = courseService.selectByPrimaryKey(curelationList.get(i).getCourseid());
            dataList.add(curelation);
        }

        JSONObject json = new JSONObject();
        return json.toJSONString(dataList);
    }

    @RequestMapping("suggeetion")
    public String suggeetion(HttpServletRequest request, Coursecomment coursecomment){

        List<Coursecomment> coursecomments = coursecommentService.queryAll(coursecomment);

        request.setAttribute("list",coursecomments);
        return "suggeetion";
    }

    @RequestMapping("view")
    public String view(HttpServletRequest request){
        User user = (User) request.getSession().getAttribute("user");

        String type = "1";

        if ("1".equals(user.getType())){
            type="2";
        }

        List<Map<String,String>> list=curelationService.courseview(type,user.getId());
        request.setAttribute("list",list);
        return "courseview";
    }

    @RequestMapping("deletecomment")
    public String deletecomment(String ID){
        coursecommentService.deleteByPrimaryKey(ID);
        return "redirect:/Course/suggeetion";
    }

    @RequestMapping("queryAll")
    public String queryAll(HttpServletRequest request, Course course){
        List<Course> list = courseService.queryAll(course);
        request.setAttribute("list",list);

        return "course";
    }

    @RequestMapping("/receive")
    public String receive(HttpServletRequest request, HttpServletResponse response, MultipartFile file){

        try {
            //也可以用request获取上传文件
            //MultipartFile  fileFile = request.getFile("file"); //这里是页面的name属性
            //转换成输入流
            InputStream is = file.getInputStream();
            //得到excel
            Workbook workbook = Workbook.getWorkbook(is);
            //得到sheet
            Sheet sheet = workbook.getSheet(0);
            //得到列数
            int colsNum = sheet.getColumns();
            //得到行数
            int rowsNum = sheet.getRows();
            //单元格
            Cell cell;
            Cell cell1;

            List<Map> list = new ArrayList<>();
            Map<Integer, String> map = new HashMap<Integer, String>();
            for (int i = 1; i < rowsNum; i++) {//我的excel第一行是标题,所以 i从1开始
                cell  = sheet.getCell(0,i);
                cell1 = sheet.getCell(5,i);
                Curelation curelation = new Curelation();

                curelation.setId(cell.getContents());
                curelation.setScore(cell1.getContents());
                curelationService.updateByPrimaryKey(curelation);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (BiffException e) {
            e.printStackTrace();
        }
        return "redirect:/Course/queryCourse";
    }

    @RequestMapping("/queryCourse")
    public String queryScore(HttpServletRequest request,Curelation curelation){

        curelation.setType("1");
        List<Curelation> list = curelationService.queryAll(curelation);
        request.setAttribute("list",list );
        return "ScoreList";
    }

    @RequestMapping("/teacher")
    public String teacher(HttpServletRequest request){
        User user = (User) request.getSession().getAttribute("user");
        Course course = new Course();
        course.setCourseteacher(user.getName());
        List<Course> courseList = courseService.queryAll(course);
        request.setAttribute("list",courseList);
        return "teacherDeal";
    }

    @RequestMapping("/student")
    public String student(HttpServletRequest request){
        Course course = new Course();
        course.setStatus("1");
        List<Course> courseList = courseService.queryAll(course);
        request.setAttribute("list",courseList);
        return "studentChoose";
    }

    @RequestMapping("/upload")
    public  String upload(){

        return "uploadScore";
    }

    @RequestMapping("/Export")
    public void Export(HttpServletResponse response, User user){

        response.setContentType("application/binary;charset=UTF-8");
        try {
            ServletOutputStream out = response.getOutputStream();
            String fileName1 = "学生信息";
            String fileName2 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss").format(new Date());
            String fileName = fileName1+fileName2;
            response.setHeader("Content-disposition", "attachment; filename=" +new String(fileName.getBytes("gbk"),"iso8859-1") + ".xls");
            String[] titles = { "成绩编号","学生编号", "学生姓名", "课程编号", "课程名称", "成绩" };
            courseService.export(titles, out,user);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @RequestMapping("delete")
    public String delete(String ID){
        courseService.deleteByPrimaryKey(ID);
        return "redirect:/Course/queryAll";
    }

    @RequestMapping("update")
    public String update(Course course){
        courseService.updateByPrimaryKey(course);
        return "redirect:/Course/queryAll";
    }

    @Transactional
    @RequestMapping("update1")
    public String update1(HttpServletRequest request,Course course){
        course.setStatus("1");
        courseService.updateByPrimaryKey(course);
        User user = (User) request.getSession().getAttribute("user");
        Curelation curelation1 = new Curelation();
        curelation1.setCourseid(course.getId());
        curelation1.setUserid(user.getId());
        List<Curelation> curelationList = curelationService.queryAll(curelation1);
        if(curelationList.size()==0){
            Curelation curelation = new Curelation();
            curelation.setUserid(user.getId());
            curelation.setCourseid(course.getId());
            curelation.setId(String.valueOf(Math.random()).substring(2, 10));
            curelation.setType("2");
            curelationService.insert(curelation);
        }
        return "redirect:/Course/teacher";
    }

    @RequestMapping("update2")
    public String update2(HttpServletRequest request,Course course){
        User user = (User) request.getSession().getAttribute("user");
        Curelation curelation = new Curelation();
        curelation.setUserid(user.getId());
        curelation.setCourseid(course.getId());
        List<Curelation> curelationList = curelationService.queryAll(curelation);
        if(curelationList.size() == 0){
            curelation.setId(String.valueOf(Math.random()).substring(2, 10));
            curelation.setType("1");
            curelationService.insert(curelation);
        }else{
            Curelation curelation1 = curelationList.get(0);
            curelation1.setUserid(user.getId());
            curelation1.setCourseid(course.getId());
            System.out.println(curelation1.toString());
            curelationService.updateByPrimaryKey(curelation1);
        }
        return "redirect:/Course/student";
    }

    @ResponseBody
    @RequestMapping("/queryOne")
    public String queryOne(String ID){
        Course course = new Course();
        course.setId(ID);
        List<Course> list = courseService.queryAll(course);
        course = list.get(0);
        JSONObject json = new JSONObject();
        return json.toJSONString(course);
    }

    @RequestMapping("add")
    public String addCourse(Course course){
        course.setId(String.valueOf(Math.random()).substring(2, 10));
        System.out.println(course.toString());
        courseService.insert(course);
        return "redirect:/Course/queryAll";
    }

}

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