利用Mybatis和Spring框架,新建Controller、Service、Dao层相关接口及其实现类、测试类,结合XML和注解的方式完成学生用户的信息管理,所有数据的输入和输出均在控制台显示进行。

以下是利用Mybatis和Spring框架完成学生用户信息管理的代码示例：

1. 实体类

package com.example.entity;

import lombok.*;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Student {
    private Long id;
    private String name;    private Integer age;
    private String email;
}

2. Dao层接口及其实现类

package com.example.dao;

import com.example.entity.Student;

import java.util.List;

public interface StudentDao {
    void add(Student student);
    void deleteById(Long id);
    void update(Student student);
    Student findById(Long id);
    List<Student> findAll();
}

package com.example.dao.impl;

import com.example.dao.StudentDao;
import com.example.entity.Student;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public class StudentDaoImpl implements StudentDao {
    @Autowired
    private SqlSessionTemplate sqlSessionTemplate;

    @Override
    public void add(Student student) {
        sqlSessionTemplate.insert("com.example.dao.StudentDao.add", student);
    }

    @Override
    public void deleteById(Long id) {
        sqlSessionTemplate.delete("com.example.dao.StudentDao.deleteById", id);
    }

    @Override
    public void update(Student student) {
        sqlSessionTemplate.update("com.example.dao.StudentDao.update", student);
    }

    @Override
    public Student findById(Long id) {
        return sqlSessionTemplate.selectOne("com.example.dao.StudentDao.findById", id);
    }

    @Override
    public List<Student> findAll() {
        return sqlSessionTemplate.selectList("com.example.dao.StudentDao.findAll");
    }
}

3. Service层接口及其实现类

package com.example.service;

import com.example.entity.Student;

import java.util.List;

public interface StudentService {
    void add(Student student);
    void deleteById(Long id);
    void update(Student student);
    Student findById(Long id);
    List<Student> findAll();
}

package com.example.service.impl;

import com.example.dao.StudentDao;
import com.example.entity.Student;
import com.example.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class StudentServiceImpl implements StudentService {

    @Autowired
    private StudentDao studentDao;

    @Override
    public void add(Student student) {
        studentDao.add(student);
    }

    @Override
    public void deleteById(Long id) {
        studentDao.deleteById(id);
    }

    @Override
    public void update(Student student) {
        studentDao.update(student);
    }

    @Override
    public Student findById(Long id) {
        return studentDao.findById(id);
    }

    @Override
    public List<Student> findAll() {
        return studentDao.findAll();
    }
}

4. Controller层

package com.example.controller;

import com.example.entity.Student;
import com.example.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import java.util.List;
import java.util.Scanner;

@Controller
public class StudentController {

    @Autowired
    private StudentService studentService;

    public void start() {
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请选择操作：");
            System.out.println("1.添加学生信息");
            System.out.println("2.删除学生信息");
            System.out.println("3.修改学生信息");
            System.out.println("4.查询学生信息");
            System.out.println("5.查询所有学生信息");
            System.out.println("0.退出");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    addStudent(scanner);
                    break;
                case 2:
                    deleteStudent(scanner);
                    break;
                case 3:
                    updateStudent(scanner);
                    break;
                case 4:
                    findStudentById(scanner);
                    break;
                case 5:
                    findAllStudents();
                    break;
                case 0:
                    System.exit(0);
                default:
                    System.out.println("输入有误，请重新输入！");
            }
        }
    }

    private void addStudent(Scanner scanner) {
        System.out.println("请输入学生姓名：");
        String name = scanner.next();
        System.out.println("请输入学生年龄：");
        int age = scanner.nextInt();
        System.out.println("请输入学生邮箱：");
        String email = scanner.next();
        Student student = new Student(null, name, age, email);
        studentService.add(student);
        System.out.println("添加成功！");
    }

    private void deleteStudent(Scanner scanner) {
        System.out.println("请输入要删除的学生id：");
        Long id = scanner.nextLong();
        studentService.deleteById(id);
        System.out.println("删除成功！");
    }

    private void updateStudent(Scanner scanner) {
        System.out.println("请输入要修改的学生id：");
        Long id = scanner.nextLong();
        Student student = studentService.findById(id);
        if (student == null) {
            System.out.println("该学生不存在！");
            return;
        }
        System.out.println("请输入学生姓名：");
        String name = scanner.next();
        System.out.println("请输入学生年龄：");
        int age = scanner.nextInt();
        System.out.println("请输入学生邮箱：");
        String email = scanner.next();
        student.setName(name);
        student.setAge(age);
        student.setEmail(email);
        studentService.update(student);
        System.out.println("修改成功！");
    }

    private void findStudentById(Scanner scanner) {
        System.out.println("请输入要查询的学生id：");
        Long id = scanner.nextLong();
        Student student = studentService.findById(id);
        if (student == null) {
            System.out.println("该学生不存在！");
            return;
        }
        System.out.println(student);
    }

    private void findAllStudents() {
        List<Student> students = studentService.findAll();
        if (students.isEmpty()) {
            System.out.println("暂无学生信息！");
            return;
        }
        for (Student student : students) {
            System.out.println(student);
        }
    }
}

5. 测试类

package com.example.test;

import com.example.controller.StudentController;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class StudentTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("ApplicationContext.xml");
        StudentController studentController = context.getBean("studentController", StudentController.class);
        studentController.start();
    }
}