Mybatis 注解 @Many 實現 遞歸菜單獲取

import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface MenuMapper {

    @Select("select * from menu where parentid=0")
    @Results(id="tree",value = {
            @Result(property = "id",column = "id"),
            @Result(property = "name",column = "name"),
            @Result(property = "parentId",column = "parentId"),
            @Result(property = "children",column = "id",many = @Many(select = "getTreeByParentId")),
    })
    List<Menu> getTreeList();

    @Select("select * from menu where parentId = #{parentId}")
    @ResultMap("tree")
    List<Menu> getTreeByParentId(int parentId);
}