Java實(shí)現(xiàn)在線考試系統(tǒng)與設(shè)計(jì)（學(xué)生功能）
學(xué)生模塊功能比較少，就是進(jìn)行考試和查看自己成績(jī)兩個(gè)大的功能。
站在用戶的角度思考問(wèn)題，與客戶深入溝通，找到善左網(wǎng)站設(shè)計(jì)與善左網(wǎng)站推廣的解決方案，憑借多年的經(jīng)驗(yàn)，讓設(shè)計(jì)與互聯(lián)網(wǎng)技術(shù)結(jié)合，創(chuàng)造個(gè)性化、用戶體驗(yàn)好的作品，建站類型包括：成都做網(wǎng)站、成都網(wǎng)站制作、企業(yè)官網(wǎng)、英文網(wǎng)站、手機(jī)端網(wǎng)站、網(wǎng)站推廣、域名注冊(cè)、雅安服務(wù)器托管、企業(yè)郵箱。業(yè)務(wù)覆蓋善左地區(qū)。
學(xué)生進(jìn)行考試的功能比較復(fù)雜（首先做了校驗(yàn)，不在考試時(shí)間范圍內(nèi)，不能進(jìn)行考試）
考試試題是數(shù)據(jù)庫(kù)根據(jù)發(fā)布考試時(shí)的條件隨機(jī)產(chǎn)生的一套試題。因?yàn)槊看慰荚囶}型題量都是不同的，因此我們繼續(xù)采用JSON的格式去保存數(shù)據(jù)，當(dāng)狀態(tài)為1:表示正在考試；狀態(tài)為2:表示已經(jīng)考試結(jié)束；狀態(tài)為3:表示老師已經(jīng)閱完試卷
（1）當(dāng)考試考試的時(shí)候，會(huì)給考上隨機(jī)產(chǎn)生一套試題，并存儲(chǔ)到數(shù)據(jù)庫(kù)中，如果考試中電腦突然壞了可以保證重新打開(kāi)還是之前的試題
（2）考試時(shí)間結(jié)束會(huì)自動(dòng)提交考試，此時(shí)會(huì)將有學(xué)生成績(jī)的試題保存到數(shù)據(jù)庫(kù)中，老師批閱試卷就是從該JSON中讀取出來(lái)的
（3）老師批閱完試卷以后，狀態(tài)會(huì)變?yōu)?，JSON中會(huì)加上考生每道題的得分情況（考試倒計(jì)時(shí)根據(jù)考試考試時(shí)間和考試時(shí)間長(zhǎng)度進(jìn)行計(jì)算出來(lái)的，如果下午四點(diǎn)考試結(jié)束，學(xué)生三點(diǎn)半登錄系統(tǒng)，就只有半個(gè)小時(shí)時(shí)間進(jìn)行考試）
@InitBinder
public void initBinder(WebDataBinder binder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
}
@RequestMapping("/list")
public String showExam(HttpServletRequest request,Integer curr, Model model){
if (curr == null){
curr = 1;
}
HttpSession session = request.getSession();
Student student = (Student) session.getAttribute("studentInfo");
Integer classesid = student.getClassesid();
if (classesid != null){
PageInfo publishexamList = publishExamService.selectAll(classesid, curr, 5);
model.addAttribute("publishexamList", publishexamList);
}
model.addAttribute("studentInfo", student);
return "/exam/list";
}
//進(jìn)入考試頁(yè)面，初始化數(shù)據(jù)
@SuppressWarnings("unchecked")
@RequestMapping("/exam")
public String exam(HttpServletRequest request,int id,Model model){
//0表示0.5小時(shí)，1表示1小時(shí)，2表示1.5小時(shí)，3表示2小時(shí)，4表示2.5小時(shí)，5表示3小時(shí)
//考試時(shí)間所對(duì)應(yīng)的毫秒數(shù)
long[] dateLong = {30*60*1000, 60*60*1000, 90*60*1000, 120*60*1000, 150*60*1000, 180*60*1000};
PublishexamWithBLOBs publishexam = publishExamService.selectByKey(id);
HttpSession session = request.getSession();
Student student = (Student) session.getAttribute("studentInfo");
//在考試記錄表中添加一條考試信息
Examhis examhis = examhisService.studentIsNotExam(student.getId(), publishexam.getSubjectId(), publishexam.getExamtime());
List textList = null;
ArrayList list = JsonUtils.toBean(publishexam.getExam(), ArrayList.class, TextModel.class);
Date date = new Date();
Date date2 = new Date();
date2.setTime(publishexam.getExamtime().getTime() + dateLong[publishexam.getExamlength()]);
//當(dāng)前時(shí)間如果在考試時(shí)間之前,考試還未開(kāi)始
if (date.compareTo(publishexam.getExamtime()) <= 0){
model.addAttribute("message", "對(duì)不起當(dāng)前考試還未開(kāi)始!");
return "/message";
}
/*1.當(dāng)前時(shí)間>考試時(shí)間+考試時(shí)長(zhǎng)，考試已經(jīng)結(jié)束
2.examhis=null，則證明作者第一次點(diǎn)擊開(kāi)始考試
如果examhis不為空
狀態(tài)為1:表示正在考試
狀態(tài)為2:表示已經(jīng)考試結(jié)束，
狀態(tài)為3:表示老師已經(jīng)閱完試卷
*/
if (date.compareTo(date2) >= 0 || (examhis != null && examhis.getStatus() != 1)){
model.addAttribute("message", "對(duì)不起當(dāng)前考試已經(jīng)結(jié)束!");
return "/message";
}
if (examhis == null){
examhis = new Examhis();
examhis.setStudentid(student.getId());
examhis.setStudentname(student.getName());
examhis.setSubjectid(publishexam.getSubjectId());
examhis.setSubjectname(publishexam.getSubjectName());
examhis.setClassesid(student.getClassesid());
examhis.setClassesname(student.getClassesname());
examhis.setPublishexamid(id);
examhis.setExamtime(publishexam.getExamtime());
examhis.setStatus(1);
textList = new ArrayList();
for (TextModel textModel : list) {
List text = textService.beginExam(textModel,publishexam.getSubjectId());
for (Text text2 : text) {
text2.setTexId(textModel.getTextModelId());
}
textList.addAll(text);
}
String json = JsonUtils.toJson(textList);
examhis.setExamtest(json);
examhisService.insert(examhis);
}else{
textList = JsonUtils.toBean(examhis.getExamtest(), ArrayList.class, Text.class);
}
int sum = 0;
for (TextModel textModel : list) {
sum += textModel.getGrade()*textModel.getTextCount();
}
List textModelList = textModelService.selectTextModel(list);
model.addAttribute("textModelList", textModelList);
model.addAttribute("studentInfo", student);
model.addAttribute("textList", textList);
model.addAttribute("publishexam", publishexam);
model.addAttribute("sum", sum);
model.addAttribute("examTimeLength", dateLong[publishexam.getExamlength()]/1000);
model.addAttribute("examTime", (date2.getTime() - date.getTime())/1000);
return "/exam/exam";
}
//提交考試方法
@RequestMapping(value="/examEnd", method=RequestMethod.POST)
@ResponseBody
public AjaxResult examEnd(HttpServletRequest request, ExamList examList, int id){
PublishexamWithBLOBs publishexam = publishExamService.selectByKey(id);
HttpSession session = request.getSession();
Student student = (Student) session.getAttribute("studentInfo");
//將考試信息轉(zhuǎn)成json，改變考試狀態(tài)，更新到考試歷史記錄表中
Examhis examhis = examhisService.studentIsNotExam(student.getId(), publishexam.getSubjectId(), publishexam.getExamtime());
List list = examList.getExamList();
list.remove(0);
for (Exam exam : list) {
exam.setText(textService.selectOne(exam.getTextId()));
if (exam.getAnswer() == null){
exam.setAnswer(" ");
}
}
String json = JsonUtils.toJson(list);
examhis.setExamtest(json);
examhis.setStatus(2);
examhisService.update(examhis);
return AjaxResult.successInstance("您已成功提交考試");
} 因?yàn)椴樵兂煽?jī)比較簡(jiǎn)單，就是查詢出學(xué)生成績(jī)，顯示到頁(yè)面上而已，正在進(jìn)行的考試成績(jī)?yōu)榭铡?/p>
總結(jié)
以上所述是小編給大家介紹的Java實(shí)現(xiàn)在線考試系統(tǒng)與設(shè)計(jì)（學(xué)生功能），希望對(duì)大家有所幫助！
標(biāo)題名稱：Java實(shí)現(xiàn)在線考試系統(tǒng)與設(shè)計(jì)（學(xué)生功能）
網(wǎng)頁(yè)網(wǎng)址：http://m.jiaotiyi.com/article/geisih.html