十三、注解开发

一、@Param(用于描述属性的名称)

二、CRUD 注解

• @Select: 类似于<select>
• @Insert: 类似于<insert>
• @Update: 类似于<update>
• @Delete: 类似于<delete>

public interface StudentMapper {
    @Select("select * from t_student")
    List<Student> selAll();

    @Insert("insert into t_student values (default, #{name}, #{age}, #{gender}, #{cid})")
    int insStu(Student student);

    @Update("update t_student set age=#{1} where id=#{0}")
    int updStu(int id, int age);

    @Delete("delete from t_student where id=#{0}")
    int delStu(int id);

}