功能模块

登录界面

管理员端

教师端

学生端

部分源码

  //登录表单处理
    @RequestMapping(value = "/login", method = {RequestMethod.POST})
    public String login(Userlogin userlogin) throws Exception {

        //Shiro实现登录
        UsernamePasswordToken token = new UsernamePasswordToken(userlogin.getUsername(),
                userlogin.getPassword());
        Subject subject = SecurityUtils.getSubject();

        //如果获取不到用户名就是登录失败，但登录失败的话，会直接抛出异常
        subject.login(token);

        if (subject.hasRole("admin")) {
            return "redirect:/admin/showStudent";
        } else if (subject.hasRole("teacher")) {
            return "redirect:/teacher/showCourse";
        } else if (subject.hasRole("student")) {
            return "redirect:/student/showCourse";
        }

        return "/login";
    }

 //  学生信息显示
    @RequestMapping("/showStudent")
    public String showStudent(Model model, Integer page) throws Exception {

        List<StudentCustom> list = null;
        //页码对象
        PagingVO pagingVO = new PagingVO();
        //设置总页数
        pagingVO.setTotalCount(studentService.getCountStudent());
        if (page == null || page == 0) {
            pagingVO.setToPageNo(1);
            list = studentService.findByPaging(1);
        } else {
            pagingVO.setToPageNo(page);
            list = studentService.findByPaging(page);
        }

        model.addAttribute("studentList", list);
        model.addAttribute("pagingVO", pagingVO);

        return "admin/showStudent";

    }

    <select id="findByPaging" parameterType="PagingVO" resultType="StudentCustom">
        select student.*, college.collegeName
        from student, college
        WHERE student.collegeID = college.collegeID
        limit #{toPageNo}, #{pageSize}
    </select>

 // 选课操作
    @RequestMapping(value = "/stuSelectedCourse")
    public String stuSelectedCourse(int id) throws Exception {
        //获取当前用户名
        Subject subject = SecurityUtils.getSubject();
        String username = (String) subject.getPrincipal();

        SelectedCourseCustom selectedCourseCustom = new SelectedCourseCustom();
        selectedCourseCustom.setCourseid(id);
        selectedCourseCustom.setStudentid(Integer.parseInt(username));

        SelectedCourseCustom s = selectedCourseService.findOne(selectedCourseCustom);

        if (s == null) {
            selectedCourseService.save(selectedCourseCustom);
        } else {
            throw new CustomException("该门课程你已经选了，不能再选");
        }

        return "redirect:/student/selectedCourse";
    }

//查询指定学生成绩
    public SelectedCourseCustom findOne(SelectedCourseCustom selectedCourseCustom) throws Exception {

        SelectedcourseExample example = new SelectedcourseExample();
        SelectedcourseExample.Criteria criteria = example.createCriteria();

        criteria.andCourseidEqualTo(selectedCourseCustom.getCourseid());
        criteria.andStudentidEqualTo(selectedCourseCustom.getStudentid());

        List<Selectedcourse> list = selectedcourseMapper.selectByExample(example);


        if (list.size() > 0) {
            SelectedCourseCustom sc = new SelectedCourseCustom();
            BeanUtils.copyProperties(list.get(0), sc);

            Student student = studentMapper.selectByPrimaryKey(selectedCourseCustom.getStudentid());
            StudentCustom studentCustom = new StudentCustom();
            BeanUtils.copyProperties(student, studentCustom);

            sc.setStudentCustom(studentCustom);

            return sc;
        }

        return null;
    }