数据字典，查询到数组转Tree

Java后台数据字典

public class Dict implements IDObject {

    /* 字典ID*/
    private String id;
    /* 字典编码 */
    private String code;
    /* 字典中文名*/
    private String label;
    /* 开发级别*/
    private int openLevel;
    /* 创建人*/
    private String creatorId;
    private String creator;
    /* 创建时间 */
    private Date createTime;
    /*描述*/
    private String description;
}

字典枚举值

public class DictValue  {
    /* 字典编码*/
    private String dictCode;
    /*顶级团队ID */
    private String rootTeamId;
    /* 枚举值编码 */
    private String valueCode;
    /*枚举值父节点编码 */
    private String parentCode;
    /* 枚举值名称 */
    private String label;
    /* 枚举值参数*/
    private String param;
    /*子节点列表*/
    private List<DictValue> childList = new ArrayList<DictValue>();
}

后台查询数据字典集合

@Override
    public InvokeResult getValueList(String rootTeamId,String dictCode){
                //判断空值
        if(existEmptyArg(rootTeamId,dictCode))
        {
            return errorResult(ErrorCodeConstants.INVALID_INPUT, "参数缺失!");
        }
        Dict tmp=new Dict();
        tmp.setCode(dictCode);
        Dict dict=dictDao.get(tmp);
        if(dict==null)
        {
            return errorResult(ErrorCodeConstants.RUNTIME_ERROR, "没有找到相应的字典!");
        }
        if(!rootTeamId.equals(TerminalUserType.PLATFORM_USER)&&dict.getOpenLevel()==Dict.OpenLevel.NO_OPEN)
        {
            return errorResult(ErrorCodeConstants.RUNTIME_ERROR, "您没有权限执行此操作");
        }
        DictValue vtmp=new DictValue();
        if(dict.getOpenLevel()==Dict.OpenLevel.READ_OPEN)
        {
            vtmp.setRootTeamId(TerminalUserType.PLATFORM_USER);
        }else if(dict.getOpenLevel()==Dict.OpenLevel.WRITE_OPEN)
        {
            vtmp.setRootTeamId(rootTeamId);
        }
        vtmp.setDictCode(dictCode);
        List<DictValue> list = dictValueDao.getList(vtmp);
        if(list.size()==0&&!rootTeamId.equals(TerminalUserType.PLATFORM_USER)&&dict.getOpenLevel()==Dict.OpenLevel.WRITE_OPEN)
        {
            vtmp.setRootTeamId(TerminalUserType.PLATFORM_USER);
            list=dictValueDao.getList(vtmp);
            if(list.size()>0)
            {
                for(DictValue v:list)
                {
                    v.setRootTeamId(rootTeamId);
                }
                dictValueDao.insertList(list);
            }
            
        }
        return successResult(list);
    }

//数组转Tree
前台js转化

const listToTree = function (data) {
  data.forEach(function (item) {
    delete item.children;
  });
  let map = {};
  data.forEach(function (item) {
    map[item.id] = item;
  });
  let val = [];
  data.forEach(function (item) {
    let parent = map[item.parentId];
    if (parent) {
      (parent.children || (parent.children = [])).push(item);
    } else {
      val.push(item);
    }
  });
  return val;
}