Java实用小工具

/**
  * 递归List<Map<String,Object>>
  * @param treeList ：递归数据
  * @param parentId ：父Id
  * @return
  */
public  JSONArray treeRecursionDataList(List<Map<String,Object>> treeList, String parentId) { 
      JSONArray childMenu = new JSONArray(); 
      for (Object object : treeList) { 
          JSONObject jsonMenu =JSONObject.parseObject(JSON.toJSONString(object)); 
          String menuId = jsonMenu.getString("SON_ID");  //这里key值为你的子ID
          String pid = jsonMenu.getString("PARENT_ID");  //这里的key值为你的父ID
          if (parentId.equals(pid) ) { 
              JSONArray c_node = treeRecursionDataList(treeList, menuId); 
              jsonMenu.put("childList", c_node); 
              childMenu.add(jsonMenu); 
          } 
      } 
      return childMenu; 
  }