基于SSM框架的在线考试系统设计、毕业设计，附源码

基于SSM框架的在线考试系统分为学生和教师两种角色。 学生可以注册、登录，进入系统后如果有教师安排的考试，可以进行考试和查看已经结束的考试结果。

教师拥有基本信息管理、班级管理、教师管理、学生管理、考试管理、试题管理、考试安排管理和查看以往考试结果等功能，对整个系统拥有最高管理权限。

部分代码展示

public class GradeInfoHandler {

    @Autowired
    @Qualifier("gson")
    private Gson gson;
    @Autowired
    private GradeInfoService gradeInfoService;

    private Logger logger = Logger.getLogger(GradeInfoHandler.class);

    /**
     * 获取所有年级集合
     * @return
     */
    @RequestMapping(value="/grades")
    public ModelAndView getGrades() {
        logger.info("获取所有年级");

        ModelAndView model = new ModelAndView();
        model.setViewName("admin/grades");
        //获取所有年级
        List<GradeInfo> grades = gradeInfoService.getGrades();
        model.addObject("grades", grades);

        return model;
    }


    /**
     * 预添加年级处理
     * @param map
     * @return
     */
    @RequestMapping("/preAddGrade")
    public String preAddGrade(Map<String, Object> map) {
        logger.info("年级添加预处理");

        map.put("grade", new GradeInfo());

        return "admin/gradeedit";
    }

    /**
     * 添加年级
     * @param grade
     * @param request
     * @return
     */
    @RequestMapping(value="/grade", method=RequestMethod.POST)
    public String isAddGrade(GradeInfo grade, HttpServletRequest request) {
        logger.info("添加年级 "+grade);

        if (grade == null) {
            logger.error("年级 "+grade+" 为空");

            request.setAttribute("error", "年级添加失败，请稍后再试！");
            return "error";
        }
        int row = gradeInfoService.isAddGrade(grade);
        if (row < 1) {
            logger.error("年级添加失败");

            request.setAttribute("error", "年级添加失败，请稍后再试！");
            return "error";
        }

        return "redirect:grades";
    }

    /**
     * 预修改年级处理
     * @param gradeId 待修改年级编号
     * @param map
     * @return
     */
    @RequestMapping(value="/grade/update/{gradeId}", method=RequestMethod.GET)
    public String preUpdateGrade(@PathVariable("gradeId") Integer gradeId,
            Map<String, Object> map) {
        logger.info("年级修改预处理");

        map.put("grade", gradeInfoService.getGradeById(gradeId));

        return "/admin/gradeedit";
    }

    /**
     * 修改年级信息
     * @param grade
     * @param request
     * @return
     */
    @RequestMapping(value="/grade/update/grade", method=RequestMethod.PUT)
    public String isUpdateGrade(GradeInfo grade, HttpServletRequest request) {
        logger.info("修改年级 "+grade+" 的信息");

        int row = gradeInfoService.isUpdateGrade(grade);
        if (row < 1) {
            logger.error("年级修改失败");

            request.setAttribute("error", "年级修改失败，请稍后再试！");
            return "/error";
        }

        return "redirect:/grades";
    }

    /**
     * 删除年级
     * @param gradeId
     * @param request
     * @return
     */
    @RequestMapping(value="grade/del/{gradeId}", method=RequestMethod.DELETE)
    public String isDelGrade(@PathVariable("gradeId") Integer gradeId, HttpServletRequest request) {
        logger.info("删除年级 "+gradeId);

        int row = gradeInfoService.isDelGrade(gradeId);
        if (row < 1) {
            logger.error("年级删除失败");

            request.setAttribute("error", "年级删除失败，请稍后再试！");
            return "/error";
        }

        return "redirect:/grades";
    }
}

演示视频链接

源码链接