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>

 1 public interface StudentMapper {
 2     @Select("select * from t_student")
 3     List<Student> selAll();
 4 
 5     @Insert("insert into t_student values (default, #{name}, #{age}, #{gender}, #{cid})")
 6     int insStu(Student student);
 7 
 8     @Update("update t_student set age=#{1} where id=#{0}")
 9     int updStu(int id, int age);
10 
11     @Delete("delete from t_student where id=#{0}")
12     int delStu(int id);
13 
14 }