@SuppressWarnings(“unchecked”)
public JsonRet getOrganizationList(HttpServletRequest request, HttpServletResponse response) {
LOG.d(“getOrgnazationList”);
// 从Session得到用户信息
HttpSession session = request.getSession();
TuUser tuUser = (TuUser) session.getAttribute(Constant.USER_INFO);
List<TuOrganization> organizationList = tuOrganizationMapper.getOrganizationList(tuUser.getBranchNo());

Map<String, Object> item;
//获取根节点的集合
List<Map<String, Object>> root = new ArrayList<>();
Map<String, Map<String, Object>> tempMap = new HashMap<>();
//子节点集合
List<Map<String, Object>> children;
for(TuOrganization o : organizationList) {
children = new ArrayList<>();
item = new HashMap<>();
item.put(“id”, o.getId());
item.put(“parentId”, o.getParentId());
item.put(“created”, o.getCreateTime());
item.put(“name”, o.getName());
item.put(“sort”, o.getSort());
item.put(“status”, o.getStatus());
item.put(“children”, children);
//每次循环都将集合重新循环添加到父集合中
tempMap.put(o.getId(), item);
Map<String, Object> parent = tempMap.get(o.getParentId());
if(null != parent) {
//父集合不为空时，获取下级集合
((List<Map<String, Object>>)parent.get(“children”)).add(item);
} else {
//根集合
root.add(item);
}
}

Comparator<Map<String, Object>> comparator = new Comparator<Map<String, Object>>() {
@Override
public int compare(Map<String, Object> o1, Map<String, Object> o2) {
//根据sort字段进行排序
Integer i1 = ((Integer)o1.get(“sort”));
Integer i2 = ((Integer)o2.get(“sort”));
if(i1 > i2) {
return 1;
} else if(i1 < i2) {
return -1;
}
//若sort字段相同的话，根据创建时间来进行排序
Date d1 = ((Date)o1.get(“created”));
Date d2 = ((Date)o2.get(“created”));
if(null == d1 || null == d2) return 0;
return d1.compareTo(d2);
}
};

Collections.sort(root, comparator);
for (Map.Entry<String, Map<String, Object>> entry : tempMap.entrySet()) {
Collections.sort(((List<Map<String, Object>>)entry.getValue().get(“children”)), comparator);
}

return jsonResponse(root, Constants.CODE_SUCCESS, “成功”);
}

  <select id="getOrganizationList" parameterType="java.lang.String" resultMap="BaseResultMap">
   select
    <include refid="Base_Column_List" />
    from tu_organization where branch_no = #{branchNo,jdbcType=VARCHAR} order by path
  </select>