package com.campus.service; import com.campus.entity.Student; import com.campus.mapper.StudentMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; // StudentService.java @Service public class StudentService { @Autowired private StudentMapper studentMapper; public List listAll() { return studentMapper.selectAll(); } public void add(Student student) { studentMapper.insert(student); } }