Java小项目之:在线测评考试系统
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Java小项目之:在线测评考试系统,让你可以在家考科一!今天带来的java小项目是一套在线测评考试系统,题库是科目一的。不仅可以在家练练java技术,还可以边学习学习科目一,一举两得。
界面介绍:开始、分数、考试规则、离开,四个选项。
还有很多题库可以选择,可以私信我!
代码展示:
package service;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import util.Config;
import util.Md5Utils;
import entity.EntityContext;
import entity.ExamInfo;
import entity.Question;
import entity.QuestionInfo;
import entity.User;
import exception.IdOrPasswordException;
public class ExamServiceImpl implements ExamService {
private EntityContext entityContext;
private List<QuestionInfo> paper = new ArrayList<QuestionInfo>();
private Config config;
private User loginUser;
public List<QuestionInfo> getPaper() {
return paper;
}
public void setPaper(List<QuestionInfo> paper) {
this.paper = paper;
}
public ExamServiceImpl(EntityContext entityContext, Config config) {
super();
this.entityContext = entityContext;
this.config = config;
}
public ExamServiceImpl(EntityContext entityContext) {
super();
this.entityContext = entityContext;
}
@Override
public User login(int id, String password) throws IdOrPasswordException {
loginUser = entityContext.findUserById(id);
if (loginUser == null) {
throw new IdOrPasswordException("鏃犳鐢ㄦ埛!");
}
if (loginUser.getPassword().equals(Md5Utils.md5(password))) {
return loginUser;
}
throw new IdOrPasswordException("瀵嗙爜閿欒!");
}
@Override
public ExamInfo start() {
buildPaper();
ExamInfo examInfo = new ExamInfo();
examInfo.setUser(loginUser);
examInfo.setTimeLimit(config.getInt("TimeLimit"));
examInfo.setExamTitle(config.getString("PaperTitle"));
examInfo.setQuestionNumber(config.getInt("QuestionNumber"));
return examInfo;
}
private void buildPaper() {
int i = 0;
Random random = new Random();
for (int level = Question.LEVEL1; level <= Question.LEVEL10; level++) {
List<Question> list = entityContext.getQuestions(level);
Question q1 = list.remove(random.nextInt(list.size()));
Question q2 = list.remove(random.nextInt(list.size()));
paper.add(new QuestionInfo(++i, q1));
paper.add(new QuestionInfo(++i, q2));
}
}
@Override
public QuestionInfo getQuestionInfo(int index) {
return paper.get(index - 1);
}
@Override
public void sendUserAnswers(int questionIndex, List<Integer> answers) {
QuestionInfo questionInfo = paper.get(questionIndex - 1);
questionInfo.setUserAnswers(new ArrayList<Integer>(answers));
}
@Override
public int getTotalSocre() {
int score = 0;
for (QuestionInfo questionInfo : paper) {
if (questionInfo.getUserAnswers().equals(
questionInfo.getQuestion().getAnswers())) {
score += questionInfo.getQuestion().getScore();
}
}
return score;
}
}
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