用javaee编写学生信息管理系统

好的，下面是一个简单的Java EE学生信息管理系统的代码示例。由于学生信息管理系统功能比较多，这里只展示部分代码示例，供参考。

1. 创建数据库表

首先需要在数据库中创建学生信息表和课程信息表，可以使用以下SQL语句：

CREATE TABLE `student` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '学生ID',
  `name` varchar(20) NOT NULL COMMENT '学生姓名',
  `gender` varchar(10) NOT NULL COMMENT '学生性别',
  `birthday` date NOT NULL COMMENT '学生生日',
  `address` varchar(100) NOT NULL COMMENT '学生地址',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='学生信息表';

CREATE TABLE `course` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '课程ID',
  `name` varchar(20) NOT NULL COMMENT '课程名称',
  `teacher` varchar(20) NOT NULL COMMENT '授课教师',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='课程信息表';

2. 创建JavaBean类

接下来需要创建JavaBean类，用于封装学生和课程信息。这里以学生信息为例，创建一个Student类，代码如下：

public class Student {
    private int id;
    private String name;
    private String gender;
    private Date birthday;
    private String address;
    // 省略getter和setter方法
}

3. 创建DAO类

接下来需要创建DAO类，用于实现数据的增删改查操作。这里以学生信息为例，创建一个StudentDAO类，代码如下：

public class StudentDAO {
    // 数据库连接池
    private DataSource dataSource;
    
    public StudentDAO() {
        // 初始化数据库连接池
        dataSource = new MysqlDataSource();
        ((MysqlDataSource) dataSource).setUrl("jdbc:mysql://localhost:3306/test");
        ((MysqlDataSource) dataSource).setUser("root");
        ((MysqlDataSource) dataSource).setPassword("123456");
    }
    
    // 添加学生信息
    public void addStudent(Student student) throws SQLException {
        Connection connection = dataSource.getConnection();
        String sql = "INSERT INTO student(name, gender, birthday, address) VALUES (?, ?, ?, ?)";
        PreparedStatement statement = connection.prepareStatement(sql);
        statement.setString(1, student.getName());
        statement.setString(2, student.getGender());
        statement.setDate(3, new java.sql.Date(student.getBirthday().getTime()));
        statement.setString(4, student.getAddress());
        statement.executeUpdate();
        statement.close();
        connection.close();
    }
    
    // 删除学生信息
    public void deleteStudent(int id) throws SQLException {
        Connection connection = dataSource.getConnection();
        String sql = "DELETE FROM student WHERE id=?";
        PreparedStatement statement = connection.prepareStatement(sql);
        statement.setInt(1, id);
        statement.executeUpdate();
        statement.close();
        connection.close();
    }
    
    // 修改学生信息
    public void updateStudent(Student student) throws SQLException {
        Connection connection = dataSource.getConnection();
        String sql = "UPDATE student SET name=?, gender=?, birthday=?, address=? WHERE id=?";
        PreparedStatement statement = connection.prepareStatement(sql);
        statement.setString(1, student.getName());
        statement.setString(2, student.getGender());
        statement.setDate(3, new java.sql.Date(student.getBirthday().getTime()));
        statement.setString(4, student.getAddress());
        statement.setInt(5, student.getId());
        statement.executeUpdate();
        statement.close();
        connection.close();
    }
    
    // 查询学生信息
    public List<Student> queryStudent() throws SQLException {
        Connection connection = dataSource.getConnection();
        String sql = "SELECT * FROM student";
        PreparedStatement statement = connection.prepareStatement(sql);
        ResultSet resultSet = statement.executeQuery();
        List<Student> studentList = new ArrayList<>();
        while (resultSet.next()) {
            Student student = new Student();
            student.setId(resultSet.getInt("id"));
            student.setName(resultSet.getString("name"));
            student.setGender(resultSet.getString("gender"));
            student.setBirthday(resultSet.getDate("birthday"));
            student.setAddress(resultSet.getString("address"));
            studentList.add(student);
        }
        resultSet.close();
        statement.close();
        connection.close();
        return studentList;
    }
}

4. 创建Servlet类

接下来需要创建Servlet类，用于处理请求和响应。这里以添加学生信息为例，创建一个AddStudentServlet类，代码如下：

public class AddStudentServlet extends HttpServlet {
    private StudentDAO studentDAO;

    @Override
    public void init() throws ServletException {
        super.init();
        studentDAO = new StudentDAO();
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        String name = request.getParameter("name");
        String gender = request.getParameter("gender");
        Date birthday = Date.valueOf(request.getParameter("birthday"));
        String address = request.getParameter("address");
        Student student = new Student();
        student.setName(name);
        student.setGender(gender);
        student.setBirthday(birthday);
        student.setAddress(address);
        try {
            studentDAO.addStudent(student);
            response.sendRedirect("studentList.jsp");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

5. 创建JSP页面

最后需要创建JSP页面，用于展示数据和接收用户请求。这里以学生列表为例，创建一个studentList.jsp页面，代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>学生列表</title>
</head>
<body>
    <h1>学生列表</h1>
    <table border="1">
        <thead>
            <tr>
                <th>ID</th>
                <th>姓名</th>
                <th>性别</th>
                <th>生日</th>
                <th>地址</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody>
            <c:forEach items="${studentList}" var="student">
                <tr>
                    <td>${student.id}</td>
                    <td>${student.name}</td>
                    <td>${student.gender}</td>
                    <td>${student.birthday}</td>
                    <td>${student.address}</td>
                    <td>
                        <a href="editStudent.jsp?id=${student.id}">编辑</a>
                        <a href="deleteStudent?id=${student.id}">删除</a>
                    </td>
                </tr>
            </c:forEach>
        </tbody>
    </table>
    <br>
    <a href="addStudent.jsp">添加学生</a>
</body>
</html>

以上就是一个简单的Java EE学生信息管理系统的代码示例，具体实现还需要根据实际需求进行设计和开发。