Mybatis的针对于同一个有自己父类或子类的递归查询 （如商品分类）

1.pojo代码

private Integer categoryId;

private Integer superId;

private String name;

private Byte level;

private String categoryImageUrl;

private Integer rank;

private Boolean isEnable;

private Date addTime;

private Date updateTime;

private List<Goods_category> child_goods_category;

2.Dao代码

List<Goods_category> getCategorys();

3.mybatis.xml中的代码

<!-- 分类 -->
<resultMap type="rrg.bean.Goods_category" id="recursionGoods_categoryMap" extends="BaseResultMap">
<collection property="child_goods_category" ofType="Goods_category" column="category_id" select="findGoods_categoryByParentId"></collection>
</resultMap>
<select id="getCategorys" resultMap="recursionGoods_categoryMap">
SELECT * FROM goods_category WHERE super_id ='' or super_id is NULL ORDER BY category_id ASC
</select>
<select id="findGoods_categoryByParentId" resultMap="recursionGoods_categoryMap">
SELECT * FROM goods_category WHERE super_id = #{category_id} ORDER BY category_id ASC
</select>