jsp考试系统设计书

// LoginServlet.java
@WebServlet("/login")
public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        
        // 验证用户名和密码
        if (UserService.validateUser(username, password)) {
            request.getSession().setAttribute("user", username);
            response.sendRedirect("dashboard.jsp");
        } else {
            request.setAttribute("error", "Invalid credentials");
            request.getRequestDispatcher("login.jsp").forward(request, response);
        }
    }
}

// QuestionServlet.java
@WebServlet("/questions")
public class QuestionServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        List<Question> questions = QuestionService.getAllQuestions();
        request.setAttribute("questions", questions);
        request.getRequestDispatcher("questions.jsp").forward(request, response);
    }
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 处理添加、编辑或删除题目的逻辑
    }
}

<!-- exam.jsp -->
<form action="submitExam" method="post">
    <c:forEach items="${questions}" var="question">
        <p>${question.text}</p>
        <c:forEach items="${question.options}" var="option">
            <input type="radio" name="answer_${question.id}" value="${option}">${option}<br>
        </c:forEach>
    </c:forEach>
    <input type="submit" value="Submit">
</form>