Web試験システムの試験用紙発注機能をJavaで実装する方法

public class ExamPaper {
    private String paperCode;
    private List<Question> questions;
    private int duration;
    private String difficultyLevel;
    
    // 构造方法和getter、setter方法省略
    
    public void addQuestion(Question question) {
        questions.add(question);
    }
    
    public void removeQuestion(Question question) {
        questions.remove(question);
    }
    
    // 其他相关方法省略
}

public class Question {
    private String question;
    private List<String> options;
    private String answer;
    
    // 构造方法和getter、setter方法省略
    
    // 其他相关方法省略
}

public class ExamPaperOrder {
    private List<ExamPaper> shoppingCart;
    
    public ExamPaperOrder() {
        shoppingCart = new ArrayList<>();
    }
    
    public void addToCart(ExamPaper examPaper) {
        shoppingCart.add(examPaper);
    }
    
    public void removeFromCart(ExamPaper examPaper) {
        shoppingCart.remove(examPaper);
    }
    
    public void checkout() {
        // 在这里实现试卷订购的逻辑，可以是生成订单、跳转到支付页面等等
        // 也可以将购物车中的试卷保存到数据库中
    }
    
    // 其他相关方法省略
    
    public static void main(String[] args) {
        ExamPaperOrder examPaperOrder = new ExamPaperOrder();
        
        // 教师选择试卷，并添加到购物车中
        ExamPaper examPaper1 = new ExamPaper();
        examPaper1.addQuestion(new Question("Question 1", options, "Answer 1"));
        examPaper1.addQuestion(new Question("Question 2", options, "Answer 2"));
        
        ExamPaper examPaper2 = new ExamPaper();
        examPaper2.addQuestion(new Question("Question 3", options, "Answer 3"));
        examPaper2.addQuestion(new Question("Question 4", options, "Answer 4"));
        
        examPaperOrder.addToCart(examPaper1);
        examPaperOrder.addToCart(examPaper2);
        
        // 教师下单
        examPaperOrder.checkout();
    }
}