ssm+mysql+jsp打造在线考试系统WeKnow-学生端

一.登陆模块

前台提交账号和密码传到后台处理控制层

1.1 首先是控制器

@RequestMapping(value="/studentLogin", method=RequestMethod.POST)public ModelAndView studentLogin(StudentInfo student, HttpServletRequest request) {ModelAndView model = new ModelAndView();StudentInfo loginStudent = studentInfoService.getStudentByAccountAndPwd(student.getStudentAccount());if(loginStudent == null || !student.getStudentPwd().equals(loginStudent.getStudentPwd())){model.setViewName("home/suc");return model;}request.getSession().setAttribute("loginStudent", loginStudent);System.out.println(request.getSession().getAttribute("loginStudent"));model.setViewName("home/suc");System.out.println("执行完毕");return model;}
}

1.2 在这里会调用服务层

StudentInfo loginStudent = studentInfoService.getStudentByAccountAndPwd(student.getStudentAccount());

1.3 服务层接口

public StudentInfo getStudentByAccountAndPwd(String studentAccount);

1.4 服务层实现

public StudentInfo getStudentByAccountAndPwd(String studentAccount) {     return studentInfoMapper.getStudentByAccountAndPwd(studentAccount);//调用dao接口}

1.5 数据层接口

public StudentInfo getStudentByAccountAndPwd(String studentAccount);

1.6 数据层实现

<mapper namespace="com.caizhen.weknow.dao.StudentInfoMapper"><!-- 定义resultMap --><resultMap type="com.caizhen.weknow.domain.StudentInfo" id="queryStudent"><!-- 学号 --><id column="studentId" property="studentId"/><!-- 学生姓名 --><result column="studentName" property="studentName"/><!-- 学生账号 --><result column="studentAccount" property="studentAccount"/><!-- 学生账号密码 --><result column="studentPwd" property="studentPwd"/><!-- 班级 --><!-- 班级自身的属性与数据库字段的映射 --> <association property="classInfo" javaType="com.caizhen.weknow.domain.ClassInfo"><id column="classId" property="classId"/><result column="className" property="className"/></association><!-- 年级 --><!-- 年级自身的属性与数据库字段的映射 --> <association property="grade" javaType="com.caizhen.weknow.domain.GradeInfo"><id column="gradeId" property="gradeId"/><result column="gradeName" property="gradeName"/></association></resultMap><select id="getStudentByAccountAndPwd" parameterType="java.lang.String" resultMap="queryStudent">SELECT a.*,b.className,c.gradeId,c.gradeName FROM StudentInfo aINNER JOIN ClassInfo b ON a.classId=b.classIdINNER JOIN GradeInfo c ON b.gradeId=c.gradeIdWHERE studentAccount=#{studentAccount}</select>
</mapper>

二：考试中心模块

<li><a id="examCenter-link" target="home" style="cursor: pointer;" href="willexams?classId=${sessionScope.loginStudent.classInfo.classId }&gradeId=${sessionScope.loginStudent.grade.gradeId }&studentId=${sessionScope.loginStudent.studentId }" >考试中心</a></li>

向url:willexams传入三个参数:classId,gradeId,studentId

2.1进入控制器

@RequestMapping("/willexams")public ModelAndView getStudentWillExam(@RequestParam("classId") Integer classId,@RequestParam("gradeId") Integer gradeId,@RequestParam(value="studentId", required=false) Integer studentId) {ModelAndView model = new ModelAndView();model.setViewName("/home/examCenter");                //将classId和gradeId存入map集合中Map<String, Object> map = new HashMap<String, Object>();map.put("classId", classId);map.put("gradeId", gradeId);List<ExamPlanInfo> examPlans = examPlanInfoService.getStudentWillExam(map);model.addObject("examPlans", examPlans);model.addObject("gradeId", gradeId);return model;}

2.2 进入服务层接口

public List<ExamPlanInfo> getStudentWillExam(Map<String, Object> map);

2.3进入服务层实现层

public List<ExamPlanInfo> getStudentWillExam(Map<String, Object> map) {return examPlanInfoMapper.getStudentWillExam(map);
}

2.4 进入数据协议层

public List<ExamPlanInfo> getStudentWillExam(Map<String, Object> map);

2.5 进入数据实现层

<mapper namespace="com.caizhen.weknow.dao.ExamPlanInfoMapper"><resultMap type="com.caizhen.weknow.domain.ExamPlanInfo" id="queryWillExam"><id column="examPlanId" property="examPlanId"/><result column="beginTime" property="beginTime"/><!-- 科目 --><association property="course" javaType="com.caizhen.weknow.domain.CourseInfo"><id column="courseId" property="courseId"/><result column="courseName" property="courseName"/></association><!-- 班级 --><association property="clazz" javaType="com.caizhen.weknow.domain.ClassInfo"><id column="classId" property="classId"/></association><!-- 试卷 --><association property="examPaper" javaType="com.caizhen.weknow.domain.ExamPaperInfo"><id column="examPaperId" property="examPaperId"/><result column="examPaperName" property="examPaperName"/><result column="subjectNum" property="subjectNum"/><result column="examPaperScore" property="examPaperScore"/><result column="examPaperEasy" property="examPaperEasy"/><result column="examPaperTime" property="examPaperTime"/></association></resultMap><!-- 查询学生待考信息 --><!-- 考试安排表  examplaninfo a--><!-- 班级信息表 classinfo  b--><!-- 年级表 gradeinfo c --><!-- 试卷表 exampaperinfo d --><!-- 课程表 courseinfo e --><!-- 需要的参数1.a.* 考试安排表所有字段2.d.examPaperName 试卷名称3.d.subjectNum 试题号4.d.examPaperScore 试卷分数5.d.examPaperEasy 试卷难易度6.d.examPaperTime  考试时长5.e.coure.name  课程名称--><select id="getStudentWillExam" parameterType="java.util.Map" resultMap="queryWillExam">SELECT a.*,d.examPaperName,d.subjectNum,d.examPaperScore,d.examPaperEasy,d.examPaperTime,e.courseName FROM ExamPlanInfo aINNER JOIN ClassInfo b ON a.classId=b.classIdINNER JOIN GradeInfo c ON b.gradeId=c.gradeIdINNER JOIN ExamPaperInfo d ON a.examPaperId=d.examPaperIdINNER JOIN CourseInfo e ON a.courseId=e.courseIdWHERE a.classId=#{classId} AND b.gradeId=#{gradeId}</select>
</mapper>

2.6 定向到考试中心界面判断exPlans中的条数是否大于0

<c:when test="${fn:length(examPlans) > 0 }">

如果不是则输出页面

<c:otherwise>
<div class="jumbotron">
<h1>暂无待考信息</h1>
<p>请等待教师分配</p>
</div></c:otherwise>

三:历史考试模块

1.前台

<!-- 考试历史 -->
<li><a id="mineCenter-link" target="home" style="cursor: pointer;" href="history/${sessionScope.loginStudent.studentId }" studentId="${sessionScope.loginStudent.studentId }">考试历史</a></li>

1.1 前台状态校验

<script type="text/javascript">$(function() {//考试中心状态判断$("#examCenter-link, #mineCenter-link").click(function() {//判断是否登录var studetnId = $(this).attr("studentId");//如果学生号为空if(studetnId.trim() == "" || studetnId == null) {zeroModal.show({title: "提示",content: "登录后才能查看",width : '200px',height : '130px',overlay : false,ok : true,onClosed : function() {location.reload();}});return false;}});

2.后台

2.1 如果学生成功登陆后点击历史考试(控制层)

@Controller
public class ExamHistoryInfoHandler {@Autowiredprivate ExamHistoryPaperService examHistoryPaperService;@RequestMapping("/historys")public ModelAndView examHistorys() {List<ExamHistoryInfo> historys = examHistoryPaperService.getExamHistoryToTeacher();ModelAndView model = new ModelAndView("admin/examHistorys");model.addObject("historys", historys);return model;}
}

2.2 服务层

private ExamHistoryPaperService examHistoryPaperService;

服务层

public interface ExamHistoryPaperService {//查询考试历史信息，针对前台学生查询public List<ExamHistoryPaper> getExamHistoryToStudent(int studentId);public int isAddExamHistory(Map<String, Object> map);public int getHistoryInfoWithIds(Map<String, Object> map);public List<ExamHistoryInfo> getExamHistoryToTeacher();
}

2.3 服务实现层

@Service
public class ExamHistoryPaperServiceImpl implements ExamHistoryPaperService {@Autowiredprivate ExamHistoryPaperMapper examHistoryPaperMapper;public List<ExamHistoryPaper> getExamHistoryToStudent(int studentId) {return examHistoryPaperMapper.getExamHistoryToStudent(studentId);}public int isAddExamHistory(Map<String, Object> map) {return examHistoryPaperMapper.isAddExamHistory(map);}public int getHistoryInfoWithIds(Map<String, Object> map) {return examHistoryPaperMapper.getHistoryInfoWithIds(map);}public List<ExamHistoryInfo> getExamHistoryToTeacher() {return examHistoryPaperMapper.getExamHistoryToTeacher();}
}

2.4 数据接口层

public interface ExamHistoryPaperMapper {//查询考试历史信息，针对前台学生查询public List<ExamHistoryPaper> getExamHistoryToStudent(int studentId);public int isAddExamHistory(Map<String, Object> map);public int getHistoryInfoWithIds(Map<String, Object> map);//查询考试历史信息，针对后台教师查询public List<ExamHistoryInfo> getExamHistoryToTeacher();
}

2.5 数据实现层

<mapper namespace="com.caizhen.weknow.dao.ExamHistoryPaperMapper"><resultMap type="com.caizhen.weknow.domain.ExamHistoryInfo" id="queryExamHistoryToStudentResultMap"><id column="historyId" property="historyId"/><result column="examScore" property="examScore"/><association property="examPaper" javaType="com.caizhen.weknow.domain.ExamPaperInfo"><id column="examPaperId" property="examPaperId"/><result column="examPaperName" property="examPaperName"/><result column="examPaperScore" property="examPaperScore"/><result column="subjectNum" property="subjectNum"/></association></resultMap><!-- 查询考试历史信息，针对前台学生查询 --><select id="getExamHistoryToStudent" parameterType="int" resultType="ExamHistoryPaper">SELECTa.historyId,a.examScore,b.examPaperId,b.examPaperName,b.examPaperScore,b.subjectNum,c.beginTimeFROM ExamHistoryInfo aLEFT JOIN examPaperInfo b ON a.examPaperId=b.exampaperIdLEFT JOIN examPlanInfo c ON b.examPaperId=c.examPaperIdWHERE studentId=#{studentId}</select><!-- 新增历史记录 --><insert id="isAddExamHistory" parameterType="java.util.Map">INSERT INTO ExamHistoryInfo VALUES(NULL, #{studentId}, #{examPaperId}, #{examScore});</insert><select id="getHistoryInfoWithIds" parameterType="java.util.Map" resultType="int">SELECT COUNT(*) FROM ExamHistoryInfo WHERE studentId=#{studentId} AND examPaperId=#{examPaperId}</select><resultMap type="com.caizhen.weknow.domain.ExamHistoryInfo" id="queryExamHistoryToTeacherResultMap"><id column="historyId" property="historyId"/><result column="examScore" property="examScore"/><association property="examPaper" javaType="com.caizhen.weknow.domain.ExamPaperInfo"><id column="examPaperId" property="examPaperId"/><result column="examPaperName" property="examPaperName"/><result column="examPaperScore" property="examPaperScore"/><result column="subjectNum" property="subjectNum"/></association><association property="student" javaType="com.caizhen.weknow.domain.StudentInfo"><id column="studentId" property="studentId"/><result column="studentName" property="studentName"/></association></resultMap><!-- 查询考试历史信息，针对后台教师查询 --><select id="getExamHistoryToTeacher" resultMap="queryExamHistoryToTeacherResultMap">SELECTa.historyId,a.examScore,b.examPaperId,b.examPaperName,b.examPaperScore,b.subjectNum,d.studentId,d.studentNameFROM ExamHistoryInfo aINNER JOIN examPaperInfo b ON a.examPaperId=b.exampaperIdLEFT JOIN StudentInfo d ON a.studentId=d.studentId;</select>
</mapper>

转载于:https://www.cnblogs.com/cainame/p/10346613.html

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