2.5、编写 Dao 接口 StudentDao

```java package com.way.dao;

import javabean.Student;

import java.util.List;

public interface StudentDao { //查询封装为list集合 public abstract List queryStudentList();

//增加数据
public abstract int insertStudent(Student student);
//修改数据
public abstract int updateSudent(Student student);
//删除数据
public abstract int deleteStudnet(Integer id);

}

```