基于MyBatis注解的学生管理程序

首先，需要创建一个名为Student的实体类，该类包含学生的id、姓名、年龄、性别等属性。代码如下：

public class Student {
    private Integer id;
    private String name;
    private Integer age;
    private String gender;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }
}

接下来，需要创建一个DAO接口，用于操作Student实体类的数据，使用MyBatis注解来声明SQL语句。代码如下：

public interface StudentMapper {
    @Select("select * from student where id = #{id}")
    Student getStudentById(@Param("id") Integer id);

    @Insert("insert into student(name, age, gender) values(#{name}, #{age}, #{gender})")
    int insertStudent(Student student);

    @Update("update student set name = #{name}, age = #{age}, gender = #{gender} where id = #{id}")
    int updateStudent(Student student);

    @Delete("delete from student where id = #{id}")
    int deleteStudent(@Param("id") Integer id);
}

其中@Select、@Insert、@Update、@Delete注解分别对应SQL语句中的SELECT、INSERT、UPDATE、DELETE操作。

最后，在配置文件中指定Mapper接口的路径，以及数据库连接信息。代码如下：

<configuration>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=false&amp;serverTimezone=UTC"/>
                <property name="username" value="root"/>
                <property name="password" value="123456"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <mapper class="com.example.dao.StudentMapper"/>
    </mappers>
</configuration>

其中，<dataSource>标签中的属性值需要根据本地数据库的实际情况进行修改。

这样，就完成了基于MyBatis注解的学生管理程序的开发。可以使用以下代码测试程序的功能：

public static void main(String[] args) {
    SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream("mybatis-config.xml"));
    SqlSession sqlSession = sqlSessionFactory.openSession();

    StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class);

    // 添加学生
    Student student = new Student();
    student.setName("Tom");
    student.setAge(20);
    student.setGender("male");
    studentMapper.insertStudent(student);

    // 查询学生
    Student queryStudent = studentMapper.getStudentById(student.getId());
    System.out.println(queryStudent.getName() + " " + queryStudent.getAge() + " " + queryStudent.getGender());

    // 修改学生信息
    queryStudent.setName("Jerry");
    queryStudent.setAge(21);
    queryStudent.setGender("female");
    studentMapper.updateStudent(queryStudent);

    // 删除学生
    studentMapper.deleteStudent(queryStudent.getId());

    sqlSession.commit();
    sqlSession.close();
}