注解自定义映射规则

@Results({
        @Result(id = true, column = "sid", property = "sid"),
        @Result(column = "sex", property = "name"),
        @Result(column = "name", property = "sex")
})
@Select("select * from student")
List<Student> getAllStudent();

跟在 xml 中配置的等同：

<resultMap id="test" type="Student">
    <id property="sid" column="sid"/>
    <result column="name" property="sex"/>    
  	<result column="sex" property="name"/>
</resultMap>