Java实现在线测评考试系统代码-创新互联

这篇文章主要为大家详细介绍了Java实现在线测评考试系统的方法，文中示例代码介绍的非常详细，零基础也能参考此文章，感兴趣的小伙伴们可以参考一下。

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 paper = new ArrayList();
private Config config;
private User loginUser;
public List getPaper() {
   return paper;
}

public void setPaper(List 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 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 answers) {
   QuestionInfo questionInfo = paper.get(questionIndex - 1);
   questionInfo.setUserAnswers(new ArrayList(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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