写一个关于学生成绩录入的java Web代码

以下是一个关于学生成绩录入的简单Java Web代码示例：

// Student.java

public class Student {
    private String name;
    private int score;

    public Student(String name, int score) {
        this.name = name;
        this.score = score;
    }

    public String getName() {
        return name;
    }

    public int getScore() {
        return score;
    }
}

// StudentDAO.java

import java.util.ArrayList;
import java.util.List;

public class StudentDAO {
    private List<Student> students;

    public StudentDAO() {
        students = new ArrayList<>();
    }

    public void addStudent(Student student) {
        students.add(student);
    }

    public List<Student> getAllStudents() {
        return students;
    }
}

// StudentServlet.java

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class StudentServlet extends HttpServlet {
    private StudentDAO studentDAO;

    public void init() {
        studentDAO = new StudentDAO();
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String name = request.getParameter("name");
        int score = Integer.parseInt(request.getParameter("score"));

        Student student = new Student(name, score);
        studentDAO.addStudent(student);

        response.sendRedirect("students.jsp");
    }
}

<!-- students.jsp -->

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>学生成绩</title>
</head>
<body>
    <h1>学生成绩</h1>
    <form action="student" method="post">
        <label for="name">姓名：</label>
        <input type="text" id="name" name="name"><br><br>
        <label for="score">成绩：</label>
        <input type="number" id="score" name="score"><br><br>
        <input type="submit" value="提交">
    </form>
    <br>
    <table>
        <tr>
            <th>姓名</th>
            <th>成绩</th>
        </tr>
        <% for (Student student : studentDAO.getAllStudents()) { %>
        <tr>
            <td><%= student.getName() %></td>
            <td><%= student.getScore() %></td>
        </tr>
        <% } %>
    </table>
</body>
</html>

请注意，这只是一个简单的示例代码，实际的应用可能需要更多的验证和错误处理。此外，你需要在web.xml中配置servlet映射